Bonding with intermolecular forces:

1.) is CH3OH a hydrogen bonding? yes or no?

2.) is CH3OH dipole-dipole interactions? Yes or no?

3.) is CH3OH a london dispersion forces? Yes or no?

Answer:

0 587 mL

Explanation:

First we convert 180 grams of HCl into moles, using its molar mass:

Now we can use the number of moles and the given concentration to calculate the required volume, applying the definition of molarity:

Finally we convert liters into milliliters:

The closest answer is option C, 587 mL.

The volume needed to make an 8.40 M solution of HCl is 0.587 ml.

The correct option is C.

HCl is a strong acid. It is present in our stomach to help in digesting food.

Step1: covert 180 grams into moles

Molar mass of HCl is 36.46 g

\(\dfrac{180 g}{36.46 g/mol } = 4.94\; mol\; HCl\)

Step2: calculate the molarity

\(\rm Molality = \dfrac{mol}{L}\\\\\rm L = \dfrac{4.94 mol }{8.40 M} = 0.588 L\\\)

Covert the liters into ml

\(\dfrac{0.588 L}{1000} = 588 mL\)

Thus, the volume of the solution is 588 ml., nearest is option C, 587 ml.

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A balloon is filled with 500.0 mL of helium at a temperature of 27 degrees Celsius and 755 mmHg. 3.4 liters is the volume in milliliters will it have when it reaches an altitude where the temperature is -33 degree Celsius and the pressure is 0.65 atm.

A measurement of three-dimensional space is volume. It is frequently expressed in numerical form using SI-derived units or different imperial or US-standard units (such the gallon, quart, and cubic inch). Volume and length (cubed) have a symbiotic relationship.

The volume much a container is typically thought of as its capacity, not as the amount of space it takes up. In other words, the volume is the volume of fluid (liquid or gas) that the container may hold.

PV/T = constant

(755 x 500) / (27 + 273) = (494 x V) / (-33 + 273)

V = 3396 ml = 3.4 liters

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The correct answer is A. Since the system is cooled, the reaction will try to generate heat to compensate for the loss.

According to Le Chatelier's principle, the system will shift in the direction that opposes the stress. In this case, cooling is the stress and the system will shift in the direction that produces heat.

Therefore, the reaction will shift to the right (products) to generate heat. This will cause the concentration of HI to increase, while the concentrations of H₂ and I₂ decrease, according to the stoichiometry of the reaction. Therefore, the correct answer is A. The reaction shifts to the right (products) and the concentration of HI increases.

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Answer: The reaction shifts to the left (reactants) and the concentrations of H^2 and I^2 increase is correct. (Answer C)

The mass of SO₃ produced is 954 g

C₄H₈S₂ + 9O₂ —> 4CO₂ + 4H₂O + 2SO₃

Molar mass of C₄H₈S₂ = (12×4) + (8×1) + (32×2) = 120 g/mol

Mass of C₄H₈S₂ from the balanced equation = 1 × 120 = 120 g

Molar mass of SO₃ = 32 + (16×3) = 80 g/mol

Mass of SO₃ from the balanced equation = 2 × 80 = 160 g

SUMMARY

From the balanced equation above,

120 g of C₄H₈S₂ reacted to produce 160 g of SO₃.

Therefore,

750 g of C₄H₈S₂ will react to produce = (750 × 160)/120 = 1000 g of SO₃

Thus, the theoretical yield SO₃ is 1000 g

Actual yield = percent × theoretical

Actual yield = 95.4% × 1000

Actual yield = 954 g

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Answer:Many nocturnal animals have a mirror-like layer, called the tapetum, behind the retina, which helps them make the most of small amounts of light.

Explanation:

The ΔS° value for the reaction KCl(s) → K+(aq) + Cl−(aq) is ΔS° > 0, as the products have a higher degree of disorder than the reactant due to an increase in the number of particles in solution. Hence the correct option is (C) ΔS° > 0.

The ΔS° value for a reaction represents the change in the entropy of the system, which is a measure of the disorder or randomness of the system. The reaction KCl(s) → K+(aq) + Cl−(aq) involves a solid compound breaking down into two separate aqueous ions, which means that the products have a higher degree of disorder than the reactant. This increase in the number of particles in solution results in an increase in entropy, which means that ΔS° > 0. Option (A) is incorrect because the reaction involves a change in state, which results in an increase in entropy. Option (B) is incorrect because it represents the relationship between enthalpy and entropy, not the ΔS° value for this particular reaction. Option (D) is incorrect because the reaction results in an increase in entropy, not a decrease. Option (E) is incorrect because the given information is sufficient to predict the sign of ΔS°.

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Answer:

Original price: $

54

Explanation:

cuz

The growth of the new plant depicts the asexual reproduction characteristic. The characteristic that describes the growth of the new plant in Stephan's mother cutting a twig from a rose bush and planting it in the soil is asexual reproduction.

Asexual reproduction is the mode of reproduction by which organisms generate offspring that are identical to the parent's without the fusion of gametes. Asexual reproduction is a type of reproduction in which the offspring is produced from a single parent.

The offspring created are clones of the parent plant, meaning they are identical to the parent.The new plant in Stephan’s mother cutting a twig from a rose bush and planting it in the soil depicts the process of asexual reproduction, which is the ability of a plant to reproduce without seeds. In asexual reproduction, plants can reproduce vegetatively by cloning themselves using their roots, bulbs, or stems.

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Answer:

C aq

Explanation:

Means desolves in water

When NaCl is dissolved in water, it separates into its constituent ions Na+ and Cl- ions. The phase of the ions are written as (aq) and that of NaCl is written as (s) .

Sodium chloride is an ionic compound formed by the transfer of electrons from the metal sodium to the nonmetal chlorine. It is used as the common table salt.

Na contains  one valence electron and Cl contains 7 valence electrons. Hence, Na can donate that electron to Cl to achieve octet in both. When Na loss an electron it forms Na+ and Cl gains the electron to form Cl-. These two ions are then attracts to form the NaCl.

When NaCl is dissolved in water the bond between these two ions weaken and the ions gets released  into the solution. The ions in the solution is indicated with the phase aqueous (aq) and the undissolved NaCl is in solid (s) state.

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The total pressure in Container C is \(5_{P}\)/(\(2_{V}\)). If the initial pressure in Container A was doubled and Container B was reduced by one-half.

To solve this problem, we need to use combined gas law, which relates with pressure, volume, and temperature of a gas;

(P₁V₁)/T₁ = (P₂V₂)/T₂

where P₁ and V₁ are initial pressure and volume, respectively, and T₁ is initial temperature. Similarly, P₂, V₂, and T₂ are inal pressure, volume, and temperature, respectively.

Let's assume that the volume and temperature are constant in all three containers. Therefore, we can simplify the equation to;

P₁/P₂ = V₁/V₂

We can use this equation to solve for the final pressure in Container C.

First, let's calculate the new pressures in Containers A and B;

Container A; the initial pressure was doubled, so P₁ = \(2_{P}\) and V₁ = V (since the volume is constant). Therefore, P₂ = P₁/(V₁/V₂) = \(2_{P}\)/(1/2) = \(4_{P}\).

Container B; the initial pressure was reduced by one-half, so P₁ = P/2 and V₁ = V (since the volume is constant). Therefore, P₂ = P₁/(V₁/V₂) = (P/2)/(1/2) = P.

Now that we have the new pressures in Containers A and B, we can use them to find the total pressure in Container C:

Container C; we are mixing equal volumes of gases from Containers A and B, so the total volume is \(2_{V}\). The total pressure is the sum of the partial pressures of the gases in Containers A and B, which are \(4_{P}\) and P, respectively. Therefore, the total pressure in Container C is:

\(P_{total}\) = (\(4_{P}\) + P)/(\(2_{V}\))

= \(5_{P}\)/(\(2_{V}\))

So, the final pressure in Container C is \(5_{P}\)/(\(2_{V}\)).

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Answer: 1s-n=1,l=0

3s-n=3,l=0

2p-n=2,l=1

4d-n=4,l=2

5f-n=5,l=3

Explanation: An electron has 4 quantum numbers .

n-principal quantum number (explains about the shell)

and has values 1,2,3....

l-angular quantum number (shape of the orbital)

and is described by shapes spherical (l=0),polar (l=1),clover leaf (l=2)

l=0(s subshell)

l=1(p subshell)

l=2(d subshell)

l=3(f subshell)

There can be no zero for the main quantum number (n). Therefore, the permitted values for n are 1, 2, 3, 4, and so forth.

Any integer between 0 and n – 1 can serve as the angular quantum number (l). For instance, if n = 3, l can be one of 0, 1, or 2.

Answer:

Explanation:

The n (Principal Quantum Number) and l (Azimuthal Quantum Number) values for the following orbitals are:

a)1s:  n=1 ,  l =0

b) 3s: n=3 ,  l =0

c)2p:  n=2 ,  l =1

d)4d:  n=4 ,  l =2

e)5f:   n=5 ,  l =3

In any orbital there are four different  quantum numbers i.e.,

•Principal Quantum Number

•Azimuthal Quantum Number

•Magnetic Quantum Number

• Spin Quantum Number

Principal Quantum Number tells about the shell and Azimuthal Quantum Number tells us about the shape of orbital.

For any orbital,

n=1,2,3,4,...

And l=0 to(n-1)

For example:

n=1 , l= 0

n=2 , l= 0,1

n=3 ,l=0,1,2

(Here 0 stands for s-orbital ,1for p-orbital, 2 for d-orbital and so on..)

So the n(Principal Quantum Number) and l(Azimuthal Quantum Number) values for the following orbitals are:

a)1s:  

n=1 (the 1 from "1s")and

l=0  (as 0 represents s-orbital)

b) 3s:

n=3 (the 3 from "3s")and

l =0 (as 0 represents s-orbital)

c)2p:

n=2 (the 2 from "2p")and

 l =1 (as 1 represents p-orbital)

d)4d:  

n=4 (the 4 from "4d")and

l =2 (as 2 represents d-orbital)

e)5f:  

n=5 (the 5 from "5f")and

 l =3 (as 3 represents f-orbital)

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It’s 11.9 liters of oxygen

Answer:

0.12 M

Explanation:

Step 1: Write the balanced equation

NaOH + HCl ⇒ NaCl + H₂O

Step 2: Calculate the reacting moles of NaOH

10 mL of a 0.30 M NaOH solution react.

\(0.010L \times \frac{0.30mol}{L} = 3.0 \times 10^{-3} mol\)

Step 3: Calculate the reacting moles of HCl

The molar ratio of NaOH to HCl is 1:1. The reacting moles of HCl are 1/1 × 3.0 × 10⁻³ mol = 3.0 × 10⁻³ mol.

Step 4: Calculate the concentration of HCl

3.0 × 10⁻³ mol of HCl are in 25 mL of solution.

\(M = \frac{3.0 \times 10^{-3} mol}{0.025L} = 0.12 M\)

Answer:

Vestigial Structures

Explanation:

Structures that were needed for an organism's ancestor, but no longer required for survival for the current organism. We needed our wisdom teeth and appendix in order to eat tougher foods, but now we do not need those to survive. But, we still have them.

Answer:

3.9 seconds

Explanation:

Given:

To find:

Solution:

We can use the equation,

v = u + at

where,

We know that the initial velocity is 0, so the equation becomes,

v = at

We can also use the equation,

s = ut + ½* at²

where,

We know that the distance covered is 540 m and the final velocity is 72 m/s, so we can substitute these values into the equation to solve for the time taken.

540 = 0 * t + ½ * a * t²

540 = ½ * a * t²

1080 = a * t²

\(t^2= \frac{1080}{a}\)

\(t = \sqrt{ \frac{1080}{a}}\)

We know that the acceleration is the change in velocity divided by the time taken, so we can substitute this value into the equation to solve for the time taken.

\(t = \sqrt{\frac{1080 }{ 72 m/s}}\)

\(t = \sqrt{15} s\)

t = 3.9 s

Therefore, the time taken is t = 3.9 seconds

Answer:

100 thousand million stars

Explanation:

Answer:

100 to 400 billion stars

The formula you provided calculates the percent change in pH based on the difference between the pH at 5 drops and the pH at 0 drops. Here's how you can use the formula:

1. Determine the pH at 5 drops and the pH at 0 drops.

Let's say the pH at 5 drops is 4 and the pH at 0 drops is 7.

2. Plug the values into the formula:

Percent Change of pH = 100% × (pH at 5 drops - pH at 0 drops) / pH at 0 drops

Percent Change of pH = 100% × (4 - 7) / 7

3. Calculate the numerator:

4 - 7 = -3

4. Calculate the denominator:

Percent Change of pH = 100% × (-3) / 7

5. Calculate the percent change:

Percent Change of pH = -300% / 7

Therefore, the percent change in pH from 0 drops to 5 drops is approximately -42.86%.

Answer:

unbalanced, direction of movement: left

Explanation:

because im smart

Answer:

unbalanced, direction of movement: to the left

Explanation:

Hope this helps :)

The question requires us to calculate the amount of atoms in 970 kg of copper (Cu).

To solve this question, we need to remember the Avogadro's number, which defines that the number of units (particles, atoms, molecules etc.) in one mole of any substance is equal to 6.02 x 10^23. We can write this information as it follows:

1 mol Cu --------------- 6.02 x 10^23 atoms of Cu

Thus, if we know the mass contained in one mol of Cu, we can calculate the amount of atoms in any given mass of this substance.

The atomic mass of copper is 63.546 u, then we can consider the amount of copper in one mol as 63.546 g.

Now, we write down the information we have (Avogadro's number, molar mass of Cu, 63.546 g, and given mass of Cu, 970 kg) and calculate the required value (amount of atoms in the given mass of Cu):

1 mol Cu ---------- 63.546 g Cu --------------- 6.02 x 10^23 atoms of Cu

970 x 10^3 g Cu ---------- x

(note that we need to convert the given mass of Cu from kilograms into grams)

Now, solving for x, we have:

Therefore, there are 9.186 x 10^27 atoms of copper in 970 kg of this element.

Taking into account the reaction stoichiometry, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

In first place, the balanced reaction is:

C₄H₆O₃ + C₇H₆O₃ (Salicyclic Acid) →C₉H₈O₄ (aspirin) + C₂H₄O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 138 grams of salicyclic acid form 180 grams of aspirin, 2.08 grams of salicyclic acid form how much mass of aspirin?

\(mass of aspirin=\frac{2.08 grams of salicyclic acidx 180 grams of aspirin}{138 grams of salicyclic acid}\)

mass of aspirin= 2.713 grams

Then, 2.713 grams of aspirin are formed when 2.08 grams of salicyclic acid reacts.

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Answer:

The balanced equation is given below:

UO2(s) + 4HF(l) —› UF4(s) + 2H2O(l)

The coefficients are: 1, 4, 1, 2

Explanation:

UO2(s) + HF(l) —› UF4(s) + H2O(l)

The above equation can be balance as follow:

There are 2 atoms of O on the left side and 1 atom on the right side. It can be balanced by writing 2 in front of H2O as shown below:

UO2(s) + HF(l) —› UF4(s) + 2H2O(l)

There are 4 atoms of F on the right side and 1 atom on the left side. It can be balanced by writing 4 in front of HF as shown below:

UO2(s) + 4HF(l) —› UF4(s) + 2H2O(l)

Now, the equation is balanced.

The coefficients are: 1, 4, 1, 2.

N2H4 was the allotted component that ran out first during the lunar module ascent phase.

Beginning with Apollo 11 in July 1969, which saw Neil Armstrong become the first person to set foot on the Moon, six missions eventually succeeded in putting people there. Apollo 13 was designed to land, but owing to a fault inside the spacecraft, it was only able to do a flyby. All nine crewed missions arrived back on Earth without incident.

Number of moles of N2H4 = 1200 kg / 32.0452 kg/mol = 37.46 mol

Number of moles of (CH3)2N2H2 = 1000 kg / 116.1596 kg/mol = 8.60 mol

Number of moles of N2O4 = 3687 kg / 92.0110 kg/mol = 40.06 mol

2 N2H4 + (CH3)2N2H2 + 3 N2O4 → 6 N2 + 2 CO2 + 8 H2O

2 mol N2H4 / 1 mol (CH3)2N2H2 = 17.20 mol N2H4

3 mol N2O4 / 1 mol (CH3)2N2H2 = 25.38 mol N2O4

The reaction will end after all of the available N2H4 has been used because we only have 37.46 mol of N2H4 available, which is less than the needed 17.20 mol. N2H4 is the limiting reagent, and as a result, the other reactants will be expelled.

N2H4 was the component allotted that was initially consumed during the ascent phase of the lunar module.

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Answer: 204.8256 millimeters

Explanation:

Answer:

Eukaryotic

Explanation:

eukaryotic contain both cells

Answer:

The answer is

Explanation:

In order to find the moles of CO2 we use the formula

\(n = \frac{N}{L} \\\)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

N = 7.57 × 10^30 molecules of CO2

We have

\(n = \frac{7.57 \times {10}^{30} }{6.02 \times {10}^{23} } \\ = 12574750.83056...\)

We have the final answer as

Hope this helps you

Answer:

lungs

Explanation:

Answer:

Molybdenum has several oxidation states, the most stable being +4 and +6 (bolded in the table at left).

Explanation:

Molybdenum has serval oxidation states, the most stable being +4 and +6(bolded in the table at left). Mybdenum does not occur naturally as a free metal on Earth; it is found only in various oxidation states in minerals.

Answer:

A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Mixtures are physical combinations of two or more elements and/or compounds.

The statement "All organic compounds contain the element carbon, but not all compounds containing the element 'carbon' are organic" can be justified based on the definition and characteristics of organic compounds.

Organic compounds are compounds primarily composed of carbon and hydrogen atoms, often with other elements like oxygen, nitrogen, sulfur, and phosphorus. These compounds are typically associated with living organisms and are known for their unique properties and behavior, including the ability to form complex structures, exhibit covalent bonding, and undergo organic reactions.

On the other hand, there are compounds that contain carbon but are not classified as organic. One notable example is carbon dioxide (\(CO_{2}\)), which is a simple inorganic compound composed of carbon and oxygen. Carbon dioxide does not possess the characteristic properties of organic compounds, such as the ability to form long chains or undergo organic reactions.

Additionally, there are inorganic compounds like carbonates (such as calcium carbonate) and carbides (such as calcium carbide) that contain carbon but are not considered organic. These compounds have distinct chemical and physical properties different from those of organic compounds.

In summary, while all organic compounds contain carbon, not all compounds containing carbon are organic. The classification of a compound as organic or inorganic depends on its overall molecular structure, bonding, and characteristic properties.

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An operational definition is the statement of procedures the researcher is going to use to measure a specific variable.

Researchers can explain in detail what they mean when they use a phrase by using an operational definition. Operational definitions are typically measurable and concrete. This method of defining variables enables others to assess the validity of the study. Operationalization is the procedure in question.

The variables you'll utilize as indicators and the methods you'll employ to observe or measure them are both included in your operational definitions. No matter how solid your conceptual definition may be, you need an operational definition since without one, you cannot measure anything.

Operational variables, also known as operationalizing definitions, describe how you'll quantify and define a particular variable when it's applied to your research. This makes it possible for a different psychologist to duplicate your findings and is crucial in establishing.

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