Chemistry, 08.04.2021 17:00 Enaszr9657

PLEASE HELP I'M SO DOOMED A balloon that contains 2.8 mol of helium gas has a volume of 31 L. If 3.5 g of helium is added, what will be the new volume of the balloon? Assume the temperature and pressure remain the same. The molar mass of helium is 4.00 g/mol.
a) 186 L
b) 70 L
c) 24 L
d) 41 L
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PLEASE HELP I'M SO DOOMED A balloon that contains 2.8 mol of helium gas has a volume of 31 L. If 3....