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Olin [163]
4 years ago
8

A quantity of CO gas occupies a volume of 0.32 L at 0.90 atm and 323 K . The pressure of the gas is lowered and its temperature

is raised until its volume is 3.8 L . Find the density of the CO under the new conditions. Express your answer to two significant figures and include the appropriate units.
Chemistry
1 answer:
Contact [7]4 years ago
5 0
Mathematical formula of Ideal Gas Law is PV=nRT
  where: P-pressure, 
              V-volume
              n-number of moles; m/MW
              T-Temperature
              m-mass
              d-density ; m/V
              MW-Molecular Weight
              R- Ideal Gas constant. If the units of P,V,n & T are atm, L, mol & K respectively, the value of R is 0.0821 L x atm / K x mol
    
Substituting the definitions to the original Gas equation becomes:
     d= P x MW / (RxT)

Solution : d= .90atm x 28 g/mol (CO) / 0.0821Lxatm / mol x K  x 323 K
           
                d = 25.2 g / 26000 mL

                d = .0.00096 g/mL is the density of CO under the new conditions
           
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The molecular mass of a compound is 92 g/mol. Analysis of the compound shows that it consists of 0.608 g of N and 1.388 g of O.
Pavel [41]

The empirical and molecular formula would be  NO_2 and  N_2O_4 respectively.

<h3>Empirical formula</h3>

The compound contains N and O.

N                                                        O

0.608/14 = 0.0434                        1.388/16 = 0.0867

Divide by the smallest.

N = 1                                             O = 2

Thus, the empirical formula would be NO_2

To get the molecular formula:

Empirical formula mass = 14 + (16x2) = 46

n = molar mass/empirical formula mass

          = 92/46 = 2

Thus, the molecular formula would be N_2O_4

More on empirical formulas can be found here: brainly.com/question/14044066

#SPJ1

3 0
3 years ago
What is 5 ounces in milliliters?
SIZIF [17.4K]
1 ounces ----------- 29.5735 mL
5 ounces ----------- ??

5 x 29.5735 / 1 => 147.868 mL

hope this helps!
6 0
3 years ago
What is the approximate size of solute particles in a solution?
murzikaleks [220]

The approximate size of solute particles in a solution is 1 nanometer.

Explanation:

Solute and solvent are the two components required to prepare a solution. Solute is the one which is dissolved in the solvent to prepare a solution. So solute should be of lesser concentration compared to the solvent. Also the particle size of solute should be lesser in size compared to the solvent for easy diffusion and substitution. Mostly it is seen that if the solute is finer and having a size of less than 1 nanometer can be easily dissolved in the solvent.

So for forming homogeneous solutions, the solute is considered to be of materials having the particle size of 1 nanometer for perfect dissolving.

Thus, the approximate size of solute particles in solution is 1 nanometer.

7 0
4 years ago
a substance that changes the rate of the reaction and is not consumed in the reaction 1 catalyst 2. a uniform mixture of molecul
umka21 [38]

Answer by YourHope:


Hi! :)


Answers:


A catalyst is a substance that changes the rate of the reaction, and is not consumed in the reaction!


A solution is a uniform mixture of molecules or ions of one substance in another!


A solute is the substance dissolved in a solution!


A solution is the substance that does the dissolving in a solution!


Have a BEAUTIFUL day~

4 0
3 years ago
Read 2 more answers
Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution used in household cleaning. The gas is a com
Julli [10]

Answer:

Atomic mass of N relative to H is 13.9.

In periodic table mass of N is around 14 RAM

Explanation:

1 mol of ammonia has 1 mol of N, and 3 mole of H

NH₃

1 mol of H weighs 1 g, so the mole of H, present in ammonia are:

1.712 g / 1 g/m = 1.712 mole

Since the ratio is 1:3

1.712 mole/3 = 0.57 mole of N are present in the amonia

To calculate the atomic mass of N relative to H, let's consider it as molar weight.

Molar weight = mass / mole

7.933 g / 0.57 mole = 13.9 g/m

4 0
3 years ago
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