Helium has a density of 1.79 x 10-4 g/mL at standard temperature and pressure. A balloon has a volume of 6.3 liters. Calculate the mass of helium that it would take to fill the balloon. Be sure to follow significant figure rules when calculating the answer.

Question

Larry Mata

Chemistry

11 August, 13:29

Helium has a density of 1.79 x 10-4 g/mL at standard temperature and pressure. A balloon has a volume of 6.3 liters. Calculate the mass of helium that it would take to fill the balloon. Be sure to follow significant figure rules when calculating the answer.

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Ireland Giles · Answer 1

Density = 1.79x10⁻⁴ g/mL

1 L = 1000 mL

6.3 L = ?

6.3 x 1000 = > 6300 mL

Mass of helium:

m = D x V

Therefore:

m = (1.79x10⁻⁴) x 6300

m = 1.1277 g of helium