PROBLEM 46P

A 0.48-mole sample of helium gas occupies a volume of 11.7 L. What is the volume of 0.72 mol of helium gas under the same conditions?

Solution 46P

Here, we need to calculate the volume of Helium gas under same condition.

We know,

Avogadro’s law states that the volume of a gas is directly proportional to the amount (in moles).

V

Thus, =

Given that,

V1 = 11.7 L

V2 = ?

n1 = 0.48 mol

n2 =0.72 mol

Therefore,

=

= 17.55 L

Therefore, the volume of 0.72 mol of Helium gas under the same conditions is 17.55 L