Calculate the percent composition of Fe in Fe(OH)3​

Answers

Answer 1

Answer:

52.257%

Explanation:


Related Questions

ar(g) deviates more from ideal behavior at extremely high pressures than ne(g) does. which of the following is one reason for this difference? responses the particle volume of ar is greater than that of ne. the particle volume of a r is greater than that of n e . ar atoms have more valence electrons than ne atoms have, so ar atoms have greater interparticle forces. a r atoms have more valence electrons than n e atoms have, so a r atoms have greater interparticle forces. the intermolecular forces between ne atoms are greater than those between ar atoms. the intermolecular forces between n e atoms are greater than those between a r atoms. ar atoms are more attracted to the walls of the container than ne atoms are.

Answers

Ar's particle volume is larger than Ne's, Ar(g) deviates from ideal behavior at extremely high pressures more than Ne(g).

The volume of the gas is insignificant compared to the container when thinking about a gas ideal behavior. The forces of attraction between the particles are insignificant. At very high pressures, Ar(g) deviates from ideal behavior more than Ne(g).

Compared to Ne, Ar has a larger particle volume. YES. Ar particles are larger than Ne particles, hence it is more difficult to ignore their volume.Ar atoms exhibit stronger interparticle forces because they contain more valence electrons than Ne atoms.There are stronger intermolecular interactions between Ne atoms than Ar atoms. NO. Compared to Ar atoms, the intermolecular interactions between Ne atoms are less.Ar atoms are more drawn to the container's walls than are Ne atoms. NO. The wall attractions don't differ significantly from one another.

Because Ar has a larger particle volume than Ne, Ar(g) deviates from ideal behavior at extremely high pressures more than Ne(g).

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The chemical equation below shows the decomposition of ammonium nitrate (NH4NO3). NH4NO3 Right arrow. N2O 2H2O A chemist who is performing this reaction starts with 160. 1 g of NH4NO3. The molar mass of NH4NO3 is 80. 03 g/mol; the molar mass of water (H2O) is 18. 01 g/mol. What mass, in grams, of H2O is produced? 9. 01 18. 01 36. 03 72. 6.

Answers

The mass of water, H₂O produced from the reaction is 72.06 g

We'll begin by calculating the mass of NH₄NO₃ that reacted and the mass of H₂O produced from the balanced equation.

NH₄NO₃ —> N₂O + 2H₂O

Molar mass of NH₄NO₃ = 80.03 g/mol

Mass of NH₄NO₃ from the balanced equation = 1 × 80.03 = 80.03 g

Molar mass of H₂O = 18.01 g/mol

Mass of H₂O from the balanced equation = 2 × 18.01 = 36.02 g

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O

Finally, we shall determine the mass of H₂O produced by the reaction of 160.1 g of NH₄NO₃.

From the balanced equation above,

80.03 g of NH₄NO₃ reacted to produce 36.02 g of H₂O.

Therefore,

160.1 g of NH₄NO₃ will react to produce = (160.1 × 36.02) / 80.03 = 72.06 g of H₂O.

Thus, the mass of water, H₂O produced from the reaction is 72.06 g

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How many moles of helium occupy a volume of 5.00 Lat 227.0°C and 5.00 atm? (R = 0.0821 atm•L/mol•K) . a) 25.0 mol b) 5.00 mol c) 0.609 mol d) 1.64 mol e) 6090 mol

Answers

The number of moles of helium occupying a volume of 5.00 L at 227.0°C and 5.00 atm is approximately 0.609 mol. Hence, the correct option is: c)

How can we calculate the number of moles of helium?

To calculate the number of moles, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

To determine the number of moles, we can use the ideal gas law equation:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

Given:

P = 5.00 atm

V = 5.00 L

T = 227.0°C = (227.0 + 273) K = 500 K (converting to Kelvin)

Now, we can rearrange the ideal gas law equation to solve for the number of moles:

n = (PV) / (RT)

Substituting the given values into the equation:

n = (5.00 atm * 5.00 L) / (0.0821 atm·L/(mol·K) * 500 K)

Calculating this expression gives the number of moles, which is approximately 0.609 mol.

Therefore, the correct option is c) 0.609 mol.

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Which of the following is true of the relationships between heat of fusion and heat of vaporization?
A.) Using the heat of fusion, you can predict the heat of vaporization.
B.) The heat of vaporization is typically larger than the heat of fusion.

Answers

Answer:

The heat of vaporization is typically larger than the heat of fusion

Next question answer:

The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

Answer:

First answer

B. The heat of vaporization is typically larger than the heat of fusion

Second answer:

A. The liquid water absorbs heat from the skin surface and is transferred to the air when the water evaporates.

Explanation:

A 25.0 mL sample of a saturated Ca(OH)2 solution is titrated with 0.028 M HCl, and the equivalence point is reached after 38.1 mL of titrant are dispensed. Based on this data, what is the concentration (M) of the hydroxide ion

Answers

The concentration of hydroxide ions in the solution is 0.0428 M.

Ions are what?

A molecule or atom that has a net electrical charge is called an ion.

The balanced equation for the reaction between HCl and Ca(OH)2 is:

Ca(OH)2 + 2HCl -> CaCl2 + 2H2O

The number of moles of HCl added at the equivalence point can be found by multiplying the volume of HCl added (in liters) by its concentration in moles/liter:

moles HCl = (38.1 mL HCl x 0.028 mol/L HCl) / 1000 mL/L = 0.00107 mol HCl

The concentration of hydroxide ions can be found by dividing the number of moles of hydroxide ions by the volume of the solution:

[OH-] = moles OH- / L of solution

We know that the number of moles of HCl added is equal to the number of moles of OH- present, so:

[OH-] = 0.00107 mol OH- / (25.0 mL / 1000 mL/L) = 0.0428 M

Therefore, the concentration of hydroxide ions in the solution is 0.0428 M.

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please help please help​

please help please help

Answers

Is really don’t know it like that sorry

Predict the ground‑state electron configuration of each ion. Use the abbreviated noble gas notation. Cr2+ : Cu2+ : Co3+ :

Answers

The Ground state electronic configuration of  Cr2+:[Ar] 3d4, Cu2+: [Ar] 3d9, Co3+: [Ar] 3d6

Electronic configuration, sometimes referred to as electronic structure or electron configuration, is the arrangement of electrons in orbitals that surround an atomic nucleus.

1. Cr2+

Atomic no.of Chromium(Cr)=24  

a ground state Chromium's electronic structure is as follows: [Ar] 4s1 3d5 = 1s2 2s2 2p6 3s2 3p6

(Atomic no.of [Ar](argon) = 18)

so,ground state electronic configuration for Cr2+:

[Ar] 4s0 3d4 =[Ar] 3d4

so, ground state electronic configuration of Cr2+:

[Ar] 3d4

2. Cu2+

Atomic number of Copper(Cu)= 29

Ground state electronic configuration of Cu:

[Ar] 4s1 3d10

so, ground state electronic configuration of Cu2+:

[Ar] 4s0 3d9 = [Ar] 3d9

so,electronic configuration of Cu2+:

[Ar] 3d9

3.Co3+

Atomic number of Cobalt(Co)=27

Ground state electronic configuration of Co:

[Ar] 4s2 3d7

so,electronic configuration of Co3+:

[Ar] 4s0 3d6 = [Ar] 3d6

So,electronic configuration of Co3+:

[Ar] 3d6

Therefore the Ground state electronic configuration of

Cr2+:[Ar] 3d4, Cu2+: [Ar] 3d9, Co3+: [Ar] 3d6

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When NaHCO3 and H2O mix do the produce or absorb heat?Also do they form a gas?

Answers

yes because it’s like that balloon experiment where you poor baking soda into vinegar and the balloon inflates

A piece of roasted salted fish is put in a mouse trap. Explain why a mouse comes to the trap. ​

Answers

The presence of salt in the fish can attract the mouse due to the sodium content. Additionally, the moisture on the fish allows for the conduction of electricity.

When the mouse touches the metal plates or wires of an electric mouse trap, completing the circuit, an electrical current passes through its body, leading to its immobilization or death.

The process behind a mouse getting trapped on a mouse trap involves some basic chemistry principles. When a piece of salted fish, such as "Koobi," is placed on a mouse trap, the following chemical interactions occur.

Salt, which is typically present in salted fish, contains sodium chloride (NaCl). Sodium chloride is an ionic compound consisting of positively charged sodium ions (Na+) and negatively charged chloride ions (Cl-). Salt serves two main purposes in this context.

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If you shine the world’s brightest flashlight at a black hole, will the light shine through the black hole, or will the black hole consume the light?

Answers

yes the flaslight would beconsumed by the black hole. So yeah

Explanation:

Answer:

if you were to aim a powerful-enough flashlight at the Moon right now, the light would reach it in a little more than a second—maybe before you got to the end of this sentence. . If you aimed your flashlight in its direction, toward the constellation Sagittarius, the light would arrive there sometime around the year 3600.

Explanation:

When sodium sulfate and water react they form sodium hydroxide and hydrogen sulfate. Write the balanced equation and classify it.

Answers

The balanced chemical equation of the reaction between sodium sulfate and water to form sodium hydroxide and hydrogen sulfate is as follows:

Na₂SO₄ + 2H₂O → 2Na(OH) + H₂SO₄

What is a chemical reaction?

A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

According to this question, sodium sulfate and water react to form sodium hydroxide and hydrogen sulfate. The balanced chemical equation is as follows:

Na₂SO₄ + 2H₂O → 2Na(OH) + H₂SO₄

The equation is said to be balanced because the number of atoms of each element are the same on both sides of the equation.

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Explain why the melting point of calcium is high?

Answers

Calcium has a high melting point which is about 842°C.

This is coz Calcium atoms have smaller radii since they have also a greater nuclear charge.

Yasir wants to determine if there is a relationship between room color and sleep. Based on his research, Yasir makes an educated guess that people fall asleep more quickly in a room painted blue than in a room painted yellow. He asks several people which color they like better—yellow or blue—and uses their responses to determine if his educated guess was correct. What is missing from Yasir's scientific investigation? A. testable hypothesis based on research B. experiment that tests the hypothesis C. variables to be tested by an experiment D. research on the topic to see what others have learned

Answers

Answer:

B). An Experiment that tests the hypothesis.

Explanation:

The element that is missing from Yasir's scientific investigation is 'an experiment which tests a hypothesis.' His experiment does not provide a verifiable statement revealing his proposition or prediction regarding the possible outcome of the experiment which could be verified by using a research or investigation. He rather tests his proposition indirectly by asking 'which color they like better' and using it to make an educated guess. Thus, option B is the correct answer.

How did astronomers use technology to identify characteristics of the Crab nebula? technology that detects ultraviolet light found hydrogen in the nebula technology that detects radio waves identified a pulsar at the center of the nebula technology that detects microwaves revealed the behavior of electrons in the nebula technology that detects gamma rays measured the distance of the nebula from Earth

Answers

Answer:

technology that detects radio waves identified a pulsar at the center of the nebula

Explanation:

Crab nebula(M1) is a blob-like patch which is supernova remnants as far as Constellation of Taurus is concerned.

It has apparent magnitude of 8.4 and can only be viewed by telescope. The astronomers make use of technology that detects radio waves, which identified a pulsar at the center of the nebula, this pulsar is a magnetized rotating compact star which is known with it's electromagnetic emissions.

Answer:

technology that detects radio waves identified a pulsar at the center of the nebula

Explanation:

Do the rocks get older or younger as you go away from the Mid Atlantic Ridge

towards the continents? Why? EXPLAIN.

Answers

Answer:

Rocks get older as we go away from the Mid Atlantic Ridge  towards the continents

Explanation:

As the plates move away from each other, new ocean lithosphere is created at the ridge. This also widens the ocean basin and leads to sea floor spreading.

The rock of the ocean floor are symmetrically aligned and they get become older as they move away from the crest of the ridge.

Thus, rocks get older as we go away from the Mid Atlantic Ridge  towards the continents

please can anyone help to name this following compounds ​

please can anyone help to name this following compounds

Answers

Answer:

2, methyl Pantenehexane

What are the first two levels of cellular organization?

Answers

Answer:

Cells and tissue

Explanation:

Cells are the smallest functional units of all living things

Tissue is organic material from which organs and their bodily structures appear

what is the change in ph when 0.30 liters of 0.020 m koh is added to a 1.0-liter solution containing 0.25 m hf and 0.78 m naf (ka for hf is 7.2 10–4)?

Answers

The change in pH resulting from the addition of 0.30 liters of 0.020 M KOH to the solution containing 0.25 M HF and 0.78 M NaF is approximately -0.614.

First, we need to determine the initial concentrations of HF and F⁻ in the 1.0-liter solution. The concentration of HF is given as 0.25 M, and the concentration of NaF can be used to determine the concentration of F⁻ since NaF is a strong electrolyte and will fully dissociate in solution. Therefore, the concentration of F⁻ is 0.78 M.

Next, we need to consider the reaction between KOH and HF:

KOH + HF ⟶ H2O + KF

The reaction between KOH and HF is a neutralization reaction. For every 1 mole of KOH added, 1 mole of HF will react to form 1 mole of water and 1 mole of KF. Since we know the initial volume of KOH added is 0.30 liters and the concentration of KOH is 0.020 M, we can calculate the number of moles of KOH added:

moles of KOH = volume × concentration = 0.30 L × 0.020 M = 0.006 moles

Therefore, 0.006 moles of HF will react with 0.006 moles of KOH, resulting in the formation of 0.006 moles of water and 0.006 moles of KF.

Now, we can calculate the new concentrations of HF and F⁻. The initial concentration of HF was 0.25 M, and we subtract 0.006 moles from it, which corresponds to the moles of HF that reacted with KOH. The volume of the solution is still 1.0 liter. Thus, the new concentration of HF is:

new concentration of HF = (0.25 moles - 0.006 moles) / 1.0 L = 0.244 M

For F⁻, the initial concentration was 0.78 M, and we add 0.006 moles to it, which corresponds to the moles of F⁻ formed from the reaction. The volume of the solution is still 1.0 liter. Thus, the new concentration of F⁻ is:

new concentration of F⁻ = (0.78 moles + 0.006 moles) / 1.0 L = 0.786 M

To calculate the change in pH, we need to consider the dissociation of HF and the equilibrium expression for the acid dissociation constant (Ka):

HF + H₂O ⇌ H₃O⁺ + F⁻

The Ka expression is given by:

Ka = [H₃O⁺][F⁻] / [HF]

Since HF is a weak acid, we assume that the concentration of [H₃O⁺] is equal to the concentration of [HF]. Therefore, the expression simplifies to:

Ka = [F⁻] / [HF]

Plugging in the values:

Ka = (0.786 M) / (0.244 M)

Solving this expression gives the Ka value. Then, we can use the Ka value to calculate the pH using the equation:

pH = -log[H₃O⁺]

To calculate the numerical values, we need to determine the new concentrations of HF and F⁻ after the reaction with KOH.

Initial concentration of HF: 0.25 M

Moles of HF reacting with KOH: 0.006 moles

New concentration of HF = (0.25 moles - 0.006 moles) / 1.0 L = 0.244 M

Initial concentration of F⁻: 0.78 M

Moles of F- formed from the reaction: 0.006 moles

New concentration of F⁻ = (0.78 moles + 0.006 moles) / 1.0 L = 0.786 M

Now, we can calculate the Ka value using the concentrations of HF and F⁻:

Ka = [F⁻] / [HF] = 0.786 M / 0.244 M = 3.2131

Using the Ka value, we can calculate the pH. Since HF is a weak acid, we assume that the concentration of [H₃O⁺] is equal to the concentration of [HF]:

pH = -log[H₃O⁺] = -log[HF] = -log(0.244) ≈ 0.614

Therefore, the change in pH resulting from the addition of 0.30 liters of 0.020 M KOH to the solution containing 0.25 M HF and 0.78 M NaF is approximately -0.614.

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The oxidation number of Oxygen is -2, and that of chlorine is -1. Use this information to match the names of the compounds to their chemical formulas.

MnCl2 ->

MnO2 ->

Answer options:

manganese (ll) fluoride

manganese (IV) chloride

manganese (II) oxide

manganese (IV) oxide​

Answers

Answer:

MnCl₂ → manganese (ll) chloride

MnO₂ → manganese (IV) oxide

Hope that helps.

11.0 L of hydrogen and 5.52 L of oxygen are exploded together in a reaction tube. What volume of water vapor was formed, at STP?

Answers

Answer:

11.0 L

Explanation:

The equation for this reaction is given as;

2H2  +  O2  -->  2H2O

2 mol of H2 reacts with 1 mol of O2 to form 2 mol of H2O

At STP;

1 mol = 22.4 L

This means;

44.8 L of H2 reacts with 22.4 L of O2 to form 44.8 L of H2O

In this reaction, the limiting reactant is H2 as O2 is in excess.

The relationship between H2 and H2O;

44.8 L = 44.8 L

11.0 L would produce x

Solving for x;

x = 11 * 44.8 / 44.8

x = 11.0 L

What is the density of a block with a mass of 36 g and a volume of 9 cm3?

Answers

Answer:

The answer is

4.0 g/cm³

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \)

From the question

mass of block = 36 g

volume = 9 cm³

The density is

\(density = \frac{36}{9} \)

We have the final answer as

4.0 g/cm³

Hope this helps you

"The pH of an acid has nothing to do with the strength of the acid."
Explain why this statement is true. Include the following terms in your explanation
• dissociation
molarity
• strong
• weak
• neutral
• acidic
basic

Answers

Answer:The relationship between acid strength and the pH of a solution. ... Typical concentrations of these ions in solution can be very small, and they also ... Acidic solutions have pH values less than 7, and basic solutions have pH values ... p, O, H, end text, it is a little more common to use pH \text{pH} pHstart text, p, H, end text.

Explanation:Therefore a strong acid will contribute more H+ ions than a weak acid. Therefore, the pH of a strong acid solution will be higher than a weak acid solution.

which outer electron configuration would you expect to belong to a noble gas?

Answers

The outer electron configuration of a noble gas is characterized by a stable electron configuration, which is completely filled with electrons in its outermost energy level (valence shell).

Noble gases are known for their high level of stability and low reactivity due to this complete electron configuration. Specifically, noble gases possess a full octet of electrons in their valence shell, except for helium (He), which has only two electrons. The general electron configuration for noble gases is ns^2 np^6, where "n" represents the principal quantum number that corresponds to the energy level. For example, helium (He) has an electron configuration of 1s^2, neon (Ne) has an electron configuration of [He] 2s^2 2p^6, and argon (Ar) has an electron configuration of [Ne] 3s^2 3p^6. This electron configuration provides the noble gases with a stable and inert nature, as they have no tendency to gain or lose electrons to achieve a more stable configuration. Overall, the noble gases' outer electron configuration reflects their exceptional stability and lack of reactivity, making them stand out among the elements in the periodic table.

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how is the element lead formed?

Answers

Natural formation of lead occurs by radioactive decay of uranium and thorium through radon (222Rn). Four stable isotopes are known, 204Pb, 206Pb, 207Pb and 208Pb, the first three of which are used for estimating the ages of rocks. Lead compounds exist mainly in +2 or +4 oxidation states, the former being more common.

assume that a 1-l solution of silver chromate solid (ag2cro4(s)) is in equilibrium with its ions (i.e., the solution is saturated). calculate the solubility (or, the equilibrium concentration) of the chromate ion. the ksp of silver chromate is 2.76 x 10-12 .

Answers

The solubility product of the chromate ion (CrO₄²⁻) is 1.17  x 10⁻¹² .

The solubility product denoted as Ks, of an ionic compound is defined as the product of the concentration of the ions that exist in equilibrium with the solid compound in a saturated solution.

The balanced chemical equation is given as,

Ag₂CrO₄ ⇌ 2Ag⁺ + CrO₄²⁻

Thus,

[Ag⁺] = 2 [CrO₄²⁻]

By using the formula of Ksp we get,

Ksp = [Ag⁺] [CrO₄²⁻]

⇒ Ksp =  2 [CrO₄²⁻]  [CrO₄²⁻]

⇒ Ksp = 2 [CrO₄²⁻]²

Substituting the values of Ksp we get,

2.76 x 10⁻¹² = 2 [CrO₄²⁻]²

⇒ [CrO₄²⁻]² = 2.76 x 10⁻¹² /2

⇒ [CrO₄²⁻]² = 1.38  x 10⁻¹²

⇒ [CrO₄²⁻] = 1.17  x 10⁻¹²

Hence, the solubility product of the chromate ion (CrO₄²⁻) is 1.17  x 10⁻¹² .

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a. What type of elements are found in each group?

Answers

Answer:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

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Density Gummy Bear Data Head to Arm to Front to Volume Mass Density Toe Start Stop Bear Arm Back (cm3) e/ cm3) Day Time Time Color Length Width Thicknes 1700 n/a orang 2.3cm 0.8cm 1.3cm1.794cm3 2.1g 1.17g/oc n/a1700 tan s (cm) cm cm Day 1 Day 2 Difference n/a n/a Much0.5cm0.1cm0.1cm 1.23cm3 0.9g 0.18g/c m3 2.8cm 0.9cm 1.2cm 3.024cm33.0g 0.99g/c m3 (Day 1- Day 2) paler m3 Post-Lab Questions: What was your hypothesis as to what would happen to the gummy bear? Was it correct? Click here to enter text. 1. 2. How long did your gummy bear soak? What do you think would have happened if you left it in Which change was greater, volume or mass? Explain your answer using scientific logic. change in volume is more because change in volume /mass which equal to 68.5% and change in mass which 0.9/2.1 equal to 42.85% 3. Which piece of information recorded in the data table do you think is least important? Explain why you think this is and why it had no effect on the results of the experiment. Click here to enter text. 4. How did the changes in mass and volume from Day 1 to Day 2 affect the density of your bear? density mass/volume so mass is 2.1g per bear with the volume 5. How could you get more accurate results from this lab? List and explain one way you could reduce your errors. Click here to enter text. 6.

Answers

Based on the given data, my hypothesis was that the gummy bear would absorb water and expand in size. This hypothesis was correct as there was a significant increase in the volume and mass of the gummy bear from Day 1 to Day 2.

The gummy bear soaked for two days.If the gummy bear was left in the water for a longer time, it would continue to absorb water and increase in size until it reached its maximum capacity.The change in volume was greater than the change in mass. This is because the change in volume was 68.5% while the change in mass was 42.85%. This indicates that the gummy bear absorbed more water than it gained mass.The least important piece of information in the data table is probably the color of the gummy bear. This had no effect on the results of the experiment as it did not impact the absorption of water.The changes in mass and volume affected the density of the gummy bear. As the volume increased, the density decreased. This can be calculated by dividing the mass by the volume.To get more accurate results from this lab, one way to reduce errors would be to use a more precise measuring tool to measure the length, width, and thickness of the gummy bear. This would provide more accurate calculations of the volume and density of the gummy bear.

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how many molecules of CO2 would 700g be?

Answers

Answer:

13

Explanation:

A hydrogen atom in an excited state emits a photon of wavelength 486 nm. What are the initial and final states of the hydrogen atom

Answers

When a hydrogen atom is in an excited state, it emits a photon of wavelength 486 nm , the initial and final energy state is n=4 and n=2, respectively.

The spectral line emitted by hydrogen atoms as they transition from the n=3 to n=2 energy level is known as the H-alpha line. The wavelength of the emitted light can be determined using the Rydberg formula:

1/λ=RZ²(1/nf²-1/ni²),

where R is the Rydberg constant (1.096776 x 10⁷ m⁻¹), Z is the atomic number (1 for hydrogen), nf is the final energy level, and ni is the initial energy level.

The transition from n=3 to n=2 is represented by nf=2 and ni=3.

Plugging in the values, we get:

1/λ=R(1)²(1/2²-1/3²)λ=656.3 nm

This is the wavelength of the H-alpha line emitted by hydrogen atoms as they transition from the n=3 to n=2 energy level. However, the given wavelength is 486 nm.

Therefore, the transition from n=4 to n=2 can be considered, since the hydrogen atom can make a jump to any lower energy level and release a photon.Using the same formula, the transition from n=4 to n=2 gives:1/λ=R(1)²(1/2²-1/4²)λ=486.1 nmTherefore, the initial and final energy levels of the hydrogen atom are n=4 and n=2, respectively.

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write the chemical equation that describes the reaction of room temperature titanium tetrachloride with water vapor to produce a titanium dioxide smokescreen. include phases.

Answers

To shed light on the process by which titanium dioxide (TiO2) nanoparticles are formed, titanium tetrachloride (TiCl4) hydrolysis has been investigated.

What takes place when TiCl4 is dissolved in water?

Hydrogen chloride (HCl) gas, which is extremely caustic and hazardous, is known to be released violently when TiCl4 reacts with water. The estimate of the scope and gravity of the effects of large accidents that have been identified, such as an unintentional spill of TiCl4, is, however, not shared by the industry.

Why is room temperature titanium chloride liquid?

An alternative strategy (which is the opposite of the solution above) would be to assert that since metal chlorides are often ionic, titanium chloride must be a tiny (covalent) molecule with weak molecular interactions if it is a liquid at room temperature.

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After a helicopter flies to a height of 500 meters, it starts to descend to alanding pad that ground distance is 11 meters. What is the measure of theangle formed with the ground looking up to the helicopter? Jane is a 57 y/o female whose husband of 35 years just passed away in the past 6 months. Jane comes to the clinic and says: "I cry all the time. I cant sleep, I have no energy, I have lost 20 pounds in the past 2 months, and I get easily agitated. Whats wrong with me A woman stands on a bathrooct scale in a Part A motioniess elevator. When the elevator begins to move; the sceie briefly reads only \( 0.71 \) of har regsilar weight Calculate the magnitude of the doc The theoretical yield of a particular reaction is 167. 5 grams of product. If after performing the reaction in the laboratory,you recovered 153. 2 grams of product, what is your percentyield?a) 1. 093%b) 109. 3%c) 0. 9146%d) 91. 46% Solving problems using R.An insurance company experienced the following mobile home losses in 10,000s of dollars for 50 cats trophic events:1 2 2 3 3 4 4 5 5 5 5 6 7 7 9 9 9 10 11 12 22 24 28 29 31 33 36 38 38 38 39 41 48 49 53 55 74 82 117 134 192 207 224 225 236 280 301 308 351 527Using class boundaries 0.5, 5.5, 17.5, 38.5, 163.5, and 549.5, group these data into five classes, and construct a relative frequency histogram of the data. Describe the distribution of losses.need to R code Which expressions are equal to 10+10? The lender of a loan of 10,000 receives annual interest payments at 10% per year for 10 years, and, in addition, will receive a lump-sum repayment of the principal along with the interest payment. The borrower will pay the annual interest to the lender and accumulate the 10,000 by annual deposits to an 6%sinking fund. The borrower wishes to schedule the deposits so that his total annual outlay is X for each of the first 5 years, and 2X for each of the final 5 years. Construct a table listing "amount accumulated in sinking fund including deposit at time t", "principal repaid" (P) , "net interest paid" (), and "outstanding balance"() for each t from 1 to 10. 9.81 m/s2 into centimeters per second squared? Current Attempt in Progress Your answer is partially correct. ht Leta = ci + jand b = 8i + 6j. Find c so that the angle between a and bis 6 Round your answers to four decimal places and enter the values in increasing order. C = i 0.4276 C2 = 8.3001 PLEASE HELP QUESTION IN PICTURE Colligative properties are those that depend on the number of particles dissolved in a solvent. The more particles in the solvent, the greater the effect the solute has on the properties of the solution. Examples of colligative properties include boiling point elevation, freezing point depression, vapor pressure depression, and osmotic pressure. Which aqueous solution has the lowest boiling point? 0.50 m MgBr20.75 m glucose0.35 m Naci0.20 m AICI3 I DON'T KNOW YET In Edgar Allan Poes "The Black Cat". How does the narrator feel about alcohol? How do you know? Choose a passage where he talks about alcohol, and see if you find any double or hidden meanings. the nurse is administering an iv potassium chloride supplement to a client who has heart failure. what should the nurse consider when developing a plan of care for this client? Find the area of the isosceles triangle.13 cm10 cm all over-the-counter receipts are entered in cash registers. in the code segment below, mylist is an arraylist of integers. the code segment is intended to remove all elements with the value 0 from mylist. int j A = (-123) + 77 + (-257) + 23 43 Sam spends exactly 20 on petrol. The petrol costs 1.45 per litre. Work out the number of litres of petrol she buys. What is one of the successes of the settlers at Jamestown in 1607? Please I need serious help with this ASAP it's easy! Please explain your answer I will mark brainliest!