A sample of Helium gas weighs 4.00 g (grams) and occupies 22.4 L (liters) when it is at 0 degree Celsius and 760 mm Hg pressure. What is the mass of the sample in grams?

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A sample of Helium gas weighs 4.00 g (grams) and occupies 22.4 L (liters) when it is at 0 degree Celsius and 760 mm Hg pressure. What is the mass of the sample in grams?