221k views
5 votes
A 4-liter container at 25 degrees Celsius contains 2.0 grams of He gas. What is the pressure inside the container?

User Pommicket
by
7.8k points

1 Answer

5 votes

Answer:

3.06 atm

Step-by-step explanation:

Using general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (litres)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK

T = temperature (K)

According to the information provided in this question, V = 4L, T = 25°C = 25 + 273 = 298K, n = ?

Mass of He gas = 2.0g

Using mole = mass ÷ molar mass

Molar Mass of He = 4g/mol

mole = 2/4

mole = 0.5mol

Using PV = nRT

P = nRT/V

P = 0.5 × 0.0821 × 298 ÷ 4

P = 12.233 ÷ 4

P = 3.06 atm

Hence, the pressure inside the container is 3.06atm.

User Mike Me
by
7.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.