Question

The mass of helium gas in a balloon is ________.

the weight of the gas minus the balloon
the amount of matter inside the balloon
the amount of matter including the balloon
the mass of helium minus the mass of the balloon

Answer 1

The amount of matter inside the balloon.

Step-by-step explanation:

4.00 g/mol

Helium, which has a mass of 4.00 g/mol, has a density of 0.164 g/l. Thus, a one-liter balloon of helium can lift a mass of (1.18-0.164) = 1.02 g.