Question

A sample of hydrogen gas collected at a pressure of 0.923 atm and a

temperature of 17.0 °C is found to occupy a volume of 29.6 liters. How many
moles of H₂ gas are in the sample?
mol

Answer 1

1.15 moles H₂

Step-by-step explanation:

To find the moles of H₂ gas, you need to use the Ideal Gas Law equation. The equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.08206 L*atm/mol*K)

-----> T = temperature (K)

Before you can plug the given values into the equation and simplify, you need to convert Celsius to Kelvin.

P = 0.923 atm R = 0.08206 L*atm/mol*K

V = 29.6 L T = 17.0 °C + 273.15 = 290.15 K

n = ? moles

PV = nRT

(0.923 atm)(29.6 L) = n(0.08206 L*atm/mol*K)(290.15 K)

27.3208 = n(23.809709)

1.15 = n