Question

A sample of methane gas collcted t a pressure of 0.0884 atm and a temperature of 6.00 C is found to occupy a volume of 26.5 L. How many moles of CH4 gas are in the sample? ____ mol

Answer 1

0.1mole

Step-by-step explanation:

Given parameters:

Pressure = 0.0884atm

Temperature = 6°C = 6 + 273 = 279K

Volume occupied = 26.5L

Unknown:

Number of moles = ?

Solution:

To solve this problem, we are going to use the ideal gas equation:

PV = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas constant = 0.082atmLmol⁻¹k⁻¹

T is the temperature.

Insert the parameters and solve for n;

0.084 x 26.5 = n x 0.082 x 279

n = 0.1mole