Question

a sample of gas contains \\(6.25 \times 10^{-3}\\) mol in a \\(500.0\text{ ml}\\) flask at \\(265\text{ }^{\circ}\text{c}\\). what is the pressure of the gas in kilopascals?

formula: \\(pv = nrt\\) (\\(r = 8.317\text{ }\frac{\text{l}\cdot\text{kpa}}{\text{mol}\cdot\text{k}}\\))

which variables are given? choose three correct answers.

• pressure
• temperature
• volume
• moles

which variables are unknown?

• moles
• volume
• temperature
• pressure

select the correct algebraic form for the equation to be used for this calculation.

• \\(p = \frac{nrv}{t}\\)
• \\(p = \frac{nrt}{v}\\)
• \\(p = \frac{v}{nrt}\\)

solve the problem for the pressure of oxygen.
kpa

Explanation:

Identify the given variables

$$
LATEXBLOCK0
$$

Identify the unknown variables

$$
LATEXBLOCK1
$$

Rearrange the ideal gas law equation

$$
LATEXBLOCK2
$$

Calculate the pressure

$$
LATEXBLOCK3
$$

Answer:

Question 1

Which variables are given? Choose three correct answers.

• temperature
• volume
• moles

Question 2

Which variables are unknown?

• pressure

Question 3

Select the correct algebraic form for the equation to be used for this calculation.

• \(P = \frac{nRT}{V}\)

Question 4

Solve the problem for the pressure of oxygen.

• 55.9 \(\text{kPa}\)