A balloon with a volume of 8.73 L contains 0.321 moles of helium gas.What is the density of the gas?

Question

Quizplus · Accepted Answer

To find the density of helium gas, we need to use the formula:

Density = (mass of gas)/(volume of gas)

To find the mass of gas, we can use the formula:

mass = moles x molar mass

The molar mass of helium is 4.003 g/mol.

So,

mass = 0.321 moles x 4.003 g/mol = 1.285 g

Now, we can plug in the values we have:

Density = (1.285 g)/(8.73 L) = 0.147 g/L

Therefore, the correct answer is B).

A Balloon with a Volume of 8