3. What is the meaning of coordination number?

Answer:

97.95 g/mol

Explanation:

Step 1: Define molar masses

Molar Mass of N - 14.01 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of Br - 79.90 g/mol

Step 2: Find amounts of molar masses

1 mol N - 14.01 g/mol

4 mol H - 4.04 g/mol

1 mol Br - 79.90 g/mol

Step 3: Find molar mass of compound

Molar Mass N + 4 Molar Mass H + 1 Molar Mass Br

14.01 g/mol + 4.04 g/mol + 79.90 g/mol

97.95 g/mol

34.5 grams of C can be produced during this reaction  if the molar mass

of compound C is 46 g/mol.

The balanced chemical equation for the given reaction is:

2A + 2B - 3C

From the equation, we can see that 2 moles of A react with 2 moles of B of to produce 3 moles of C. Therefore, 0.5 moles of A will react with (0.5/2) * 2 = 0.5 moles of B to produce of (0.5/2) * 3 = 0.75 moles of C.

To calculate the mass of C produced, we can use the formula:

mass = moles * molar mass

Substituting the values, we get:

mass of C = 0.75 moles * 46 g/mol

= 34.5 g

Therefore, 34.5 grams of C can be produced during this reaction.

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Answer:

The analysis indicates that the plant food sample contains approximately 13.63% P2O5.

Explanation:

To calculate the percentage of P2O5 in the plant food sample, we need to determine the amount of phosphorus (P) present in the sample and then convert it to P2O5.

1. Calculate the moles of AgNO3 used in the precipitation reaction:

2. Since the stoichiometric ratio between AgNO3 and Ag3PO4 is 3:1, the moles of Ag3PO4 formed in the precipitation reaction are also 0.0041 mol.

3. Calculate the moles of phosphorus (P) in the Ag3PO4:

  Moles of P = Moles of Ag3PO4 × (1 mol of P / 1 mol of Ag3PO4)

  Moles of P = 0.0041 mol × 1 mol / 1 mol = 0.0041 mol

4. Calculate the mass of P2O5:

  Mass of P2O5 = Moles of P × Molar mass of P2O5

  Mass of P2O5 = 0.0041 mol × 141.94 g/mol = 0.581 g

5. Calculate the percentage of P2O5 in the plant food sample:

  %P2O5 = (Mass of P2O5 / Mass of the sample) × 100

  %P2O5 = (0.581 g / 4.258 g) × 100 = 13.63%

The conversions that could be performed with these two conversion factors alone, Density—> molar mass or/formula mass—> is volume ---> moles; option D

Conversion factors are expressions or values which are used to convert from one unit or value to another.

The conversion factor given is:

Density—> molar mass or/formula mass—>

volume = density/mass

moles = mass/molar mass

Volume to moles = density/mass -->  mass/ molar mass

Volume to moles = density ---> molar mass or formula mass

The conversion of volume to moles will therefore require density and molar mass or formula.

In conclusion, conversion factors are used to convert from one unit  value to another.

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Based on limiting and excess reactant, having an appropriate stoichiometric ratio will help maximize the quality of lemonade made by Just lemons Inc.

Lemonade is made using the following ingredients in the equation below:

Since both sugar and lemon juice have tastes, an excess of either of the two will affect the taste of lemonade.

Since this is an activity, the ingredient affecting the lemonade will either be sugar or lemon juice.

Just lemons incorporated can acquire and use more accurate measurement equipments.

They can also employ a skilled technician.

The amount of leftover ingredients can be reduced by using an appropriate stoichiometry ratio of reactants.

Limiting reactants are used up in a reaction while excess reagents are leftover.

Either water, lemon juice or sugar is a limiting reactant.

Therefore, it would be best the engineers determine the limiting reactant so water will not be in excess.

Therefore, based on limiting and excess reactant, having an appropriate stoichiometric ratio will help maximize the quality of lemonade made by Just lemons Inc.

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Answer:

C and D- Ionic bonding

B- Metallic bond

Explanation:

They show ionic bonding through which metals bond.

B shows metallic bonding

Answer:

B. Cl : 1

F C:1 O:5 H:2

Explanation:

Chemical reactions in living systems occur in an environment, within a narrow range of temperatures causing chemical changes.

Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.

There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

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Answer:

\(\Delta V = 234.736\,mL\)

Explanation:

The quantity of moles of ethanol in the solution is:

\(n_{C_{2}H_{5}OH} = \left(\frac{597\,mL}{1000\,mL} \right)\cdot \left(8.35\,\frac{mol}{L} \right)\)

\(n_{C_{2}H_{5}OH} = 4.985\,mol\)

The mass and volume of ethanol in the solution are, respectively:

\(m_{C_{2}H_{5}OH} = (4.985\,mol)\cdot \left(46.07\,\frac{g}{mol} \right)\)

\(m_{C_{2}H_{5}OH} = 229.658\,g\)

\(V_{C_{2}H_{5}OH} = \frac{229.658\,g}{0.7893\,\frac{g}{mL} }\)

\(V_{C_{2}H_{5}OH} = 290.964\,mL\)

The difference between the total volume of water and ethanol mixed to prepare the solution and the actual volume of solution is:

\(\Delta V = (525\,mL+597\,mL) - (597\,mL + 290.964\,mL)\)

\(\Delta V = 234.736\,mL\)

The difference in volume between the total volume of water and ethanol is ΔV =234.736 mL.

The quantity of moles of ethanol in the solution is:

\(nC_2H_5OH=\frac{597mL}{1000mL} *8.35mol/L\\\\nC_2H_5OH=4.985 moles\)

The mass and volume of ethanol in the solution are, respectively:

\(mC_2H_5OH=4.985moles*46.07g/mol\\\\mC_2H_5OH=229.685g\)

\(VC_2H_5OH=\frac{229.685g}{0.7893g/mL} \\\\VC_2H_5OH=290.964mL\)

The difference between the total volume of water and ethanol mixed to prepare the solution and the actual volume of solution is:

ΔV= (525mL+597mL)- (597mL + 290.964 mL)

ΔV= 234.736mL

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Answer:

C

Explanation:

because its the answer

Answer:

acids

Explanation:

acids because if the rain comes from cloud is acid it can be weathered or if the water is slightly acidic

Answer:

180 g Ca

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

4.4 mol Ca

Step 2: Identify Conversions

Molar Mass of Ca - 40.08 g/mol

Step 3: Convert

\(4.4 \ mol \ Ca(\frac{40.08 \ g \ Ca}{1 \ mol \ Ca} )\) = 176.352 g Ca

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

176.352 g Ca ≈ 180 g Ca

The de Broglie wavelength of the ball bearing is approximately 1.004 x 10^-35 meters.

According to de Broglie's equation, the de Broglie wavelength (λ) of a particle is given by:

λ = h / p

where

h is Planck's constant (6.626 x 10^-34 J s) and

p is the momentum of the particle.

The momentum (p) of the ball bearing can be calculated using the formula:

p = m * v

where

m is the mass of the ball bearing and

v is its velocity.

Substituting the given values, we get:

p = 0.02 kg * 330 m/s = 6.6 kg m/s

Now, we can calculate the de Broglie wavelength (λ) of the ball bearing as follows:

λ = h / p = 6.626 x 10^-34 J s / 6.6 kg m/s = 1.004 x 10^-35 m

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Answer:

95.5 g/mol

Explanation:

To find the molar mass of the solute, we need to first calculate the number of moles of the solute in the solution.

Number of moles of solute = concentration x volume

We are given the concentration (0.400 m) and the volume (500 grams) of the solution, but we need to convert the mass of water to volume. We can do this using the density of water:

Density of water = 1 g/mL

Volume of water = mass of water / density of water = 500 g / 1 g/mL = 500 mL

Now we can calculate the number of moles of solute:

Number of moles of solute = 0.400 m x 500 mL = 200 mmol

Next, we need to find the mass of the solute:

Mass of solute = number of moles x molar mass

We are given the number of moles (200 mmol), so we can rearrange the equation to solve for the molar mass:

Molar mass = mass of solute / number of moles

Molar mass = 19.10 g / 200 mmol = 95.5 g/mol

Therefore, the molar mass of the solute is 95.5 g/mol.

Hopes this helps

The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.

Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.

Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.

It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.

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Answer:

thermal energy

Explanation:

due to the heat

Answer:

Answer:kinetic energy

Explanation:

Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored energy of position).

Answer: hope this helps

Explanation: I’m not sure but after some research here’s what I gathered The molecule has 3 calcium atoms, 2 phosphate atoms and 8 O atoms in it also rate this and pls thank me follow and as as many questions as you need.

The volume of air you might inhale (and exhale) in 8.00 hours is approximately 1903.2 liters.

To calculate the volume of air you might inhale (and exhale) in 8.00 hours, we need to determine the total number of breaths you take in that time and then multiply it by the volume of each breath.

First, let's calculate the number of breaths in 8.00 hours:

Number of breaths per minute = 13

Number of breaths per hour = 13 breaths/minute * 60 minutes/hour = 780 breaths/hour

Number of breaths in 8.00 hours = 780 breaths/hour * 8.00 hours = 6240 breaths

Now, let's calculate the volume of air in liters:

Volume of each breath = 0.305 liters

Volume of air inhaled and exhaled in 8.00 hours = Volume of each breath * Number of breaths in 8.00 hours

Volume of air inhaled and exhaled in 8.00 hours = 0.305 liters/breath * 6240 breaths = 1903.2 liters

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Answer:

radiation.

Explanation:

Radiation is a method of energy transfer in which energy can transfer through matter or through empty space. In this example, solar energy travels through empty space from the Sun, through the Earth's atmosphere, and to the metal surface. The metal surface absorbs some of the energy, which causes the surface to heat up.

Answer:

limiting reagent is 02

mass of CO2 is 11g

Explanation:

the limiting reagent is the reagent which is consumed completely

no of mole of CH2 = m in g / molar mass

= 46.0/(12+2)

= 3.285 moles.

no of mole of O2 = 32/32

= 1 mole

from the reaction

1 mole of CH2 ==> 2 mol of O2

3.285 mol ==> 1/2 mol

3.285 mol ==> 0.5 mol

:. since O2 has the lowest mol , it's the limiting reagent

the limiting reagent mol will be used to find the no of mole of CH2

2 mol of O2==> 1 mol of CO2

0.5 mol ==> 0.5/2

0.25 mole of CO2

mass = 0.25 * ( 12+32)

= 11g

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Heat produced =  -13588.956 kJ

Given

The reaction of combustion of Methane

CH4(g)+2O2(g)→CO2(g)+2H2O(g) ΔH∘rxn=−802.3kJ

271 g of CH4

Required

Heat produced

Solution

mol of 271 g CH₄ (MW=16 g/mol0

mol = mass : MW

mol = 271 : 16

mol = 16.9375

So Heat produced :

= mol x ΔH°rxn

= 16.9375 mol x −802.3kJ/mol = -13588.956 kJ

Answer:

a. A hydrocarbon is any of a class of organic chemicals made up of only the elements carbon (C) and hydrogen (H). The carbon atoms join together to form the framework of the compound, and the hydrogen atoms attach to them in many different configurations.

Answer:

hydrocarbon means that  a compound only contains carbon and hydrogen contain together to form a chain.For example

methane-CH4        Main formula  CnH2n+2

ethane- C2H6        methane empirical formula CH4

propane=C3H8      Methane molecular formula  CH4  

ethane empirical formula - C2H6

ethane molecular formula  CH3-CH3    (C2H6)

propane empirical formula  C3H8

propane molecular formula CH3-CH2-CH3   (C3H8)

Explanation:

Answer:

Explanation:

tearing a piece of paper

crushing a soda can

Answer:

Can you provide the options pls

Explanation:

Answer:

The beta-lactam ring, the thiazolidine/dihydrothiazine ring and the side-chains are all potentially immunogenic. Cross-reactivity between penicillin and third-generation cephalosporins occurs in 2% to 3% of penicillin-allergic patients.

This is one of the answers.

The second is

The cephalosporin medications that are likely to cross-react after penicillin allergies have been established and include: Cephalexin. Cefadroxil. Ceflaclor.

Answer:

48.9 or 49.0 g of sulfuric acid

Explanation:

Answer:

very very very verytrue

Answer:

Purple flowers

Explanation:

Usually the dominant allele is a capital letter.

From the question, purple flowers are dominant to white flowers while white are recessive.

PP = Purple

pp = White

Answer:

Mostly purple flowers itself

Answer:

Light waves come in a continuous variety of sizes, frequencies and energies, a continuum known as the electromagnetic spectrum. Once Maxwell introduced the concept of electromagnetic waves, everything clicked into place.

Explanation:

Hope this helps:)

~Kisame'sAbs

Answer:

10.0 g C12H22O11 (mol/342.34 g) (1/0.500 L) = 0.06 M C12H22O11 => 1 sig.

Explanation:

According to molar concentration,0.00876 liter of 0.500 M sucrose contain 1.5 kg of sucrose.

Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.

The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.

In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.

Volume is obtained by using molar concentration formula, 0.500×342.3/1.5×10³=114.1×10\(^-3\)=1/V

Thus,volume=1/114.1×10\(^-3\)=0.00876 M.

Thus, the volume of sucrose solution is 0.00876 M.

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