1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
koban [17]
3 years ago
12

A container holds 15.0 g of phosphorous gas at a pressure of 2.0 atm and a temperature of 20.0 Celsius. What is the density of t

he gas?
2.57 g/L
12.3 g/L
180 g/L
0.40 g/L
Chemistry
2 answers:
erik [133]3 years ago
5 0
<span>Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. We calculate as follows:

PV = nRT
PV = mRT/ Molar mass
m/V = P(molar mass)/RT
Density = P(molar mass)/RT 
Density = 2.0 ( 30.97 ) / 0.08206 ( 20 + 273.15) = 2.57 g/L <----First option</span>
VMariaS [17]3 years ago
4 0

Answer: Density of the gas is 2.57 g/L.

Explanation: Converting the mass of phosphorous gas into its moles using the formula:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass of phosphorous gas = 15 g

Molar mass of phosphorous gas = 31 g/mol

Using above equation, we get

n=\frac{15g}{31g/mol}=0.484moles

Using Ideal gas equation, which is:

PV=nRT

Given:

P = 2 atm

T=20^oC=(273+20)K=293K    (Conversion Factor: 0^oC=273K )

n = 0.484 moles (Calculated above)

R=0.082057\text{ L atm }mol^{-1}K^{-1}  (Gas Constant)

Putting all the values in above equation, we calculate the number of moles.

2atm\times V=(0.484moles)(0.082057\text{ L atm }mol^{-1}K^{-1})(293K)

V = 5.818 L

Now, to calculate density, we use the formula:

Density=\frac{Mass}{Volume}

Density=\frac{15g}{5.818L}

Density = 2.57 g/L

You might be interested in
What are the 5 common uses of fossil fuels?
Leni [432]

Answer:

Electricity. Coal alone provides half the electricity in the United States. ...

Heating. Oil and natural gas are commonly used for heating homes as well as providing heat for industrial applications.

Transportation. Oil supplies 99 percent of the energy for cars in the form of gasoline and diesel. ...

Limits. ...

Considerations.

Explanation:

5 0
3 years ago
What is a reactant of a chemical reaction?
Alika [10]

The reactant of a chemical reaction is one of the two or more substances in a chemical reaction. This image should help:

6 0
3 years ago
How many minutes are in 180,0 days?
iris [78.8K]

Answer:

259,200 minutes

Explanation:

4 0
2 years ago
A concentrated koh (mw = 56.105 g/mol) solution is 45.0 %wt koh and has a density of 1.45 g/ml. How many milliliters of the conc
kati45 [8]

The wt% of KOH = 45%

This implies that there is 45 g of KOH in 100 g of the solution

Density of the solution is given as 1.45 g/ml

Therefore, the volume corresponding to 100 g of the solution is

= 100 g * 1 ml /1.45 g = 68.97 ml = 0.069 L

Now concentration of the concentrated KOH solution is:

Molarity = moles of KOH/vol of solution

            = (45 g/56.105 g.mol-1)/0.069 L = 11.6 M

Thus,

Initial KOH concentration M1 = 11.6 M

Initial volume = V1

Final concentration M2 = 1.20 M

Final volume V2 = 250 ml

M1*V1= M2*V2

V1 = M2*V2/M1 = 1.20*250/11.6 = 25.9 ml = 26 ml

                     

8 0
3 years ago
Which of the following biological macromolecule is correctly paired with its main function in the body?
daser333 [38]
Answer is: Proteins-growth and repair of cellular structures.
Proteins are macromolecules made of amino acids (usually 20 amino acids) and they are main structure molecules of all living cells.
Lipids and sugars (glucose) are main source of energy in every living organism and they are used as the cell's energy reserves.
6 0
3 years ago
Read 2 more answers
Other questions:
  • What is the hardest mineral listed here? <br> A. quartz B. calcite C. gypsum D. corundum
    15·2 answers
  • Which term best describes the rate at which global erosion takes place
    11·1 answer
  • How are fossils formed
    6·1 answer
  • Please help ^^ thank you
    11·1 answer
  • How long will it take a piece of strontium-90 (produced in a nuclear test blast) weighing exactly 1000.0 g to be
    8·1 answer
  • How much heat is required to melt 26.0 g of ice at its melting point?
    10·1 answer
  • Titration Lab Day 2 Data Sheet help?
    8·1 answer
  • The speed of light is 3.0 x 10^8 m.s^-1. what is the speed in nm.ms^-1 ?
    6·1 answer
  • What is the name for Fe2(CO3)3?
    8·1 answer
  • Is each of the following very soluble in water? Explain.<br> (b) Sodium hydroxide
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!