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

Chemistry

Kailee Burns

9 March, 19:03

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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Answers (1)

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Rhys Todd · 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