Mathematics, 04.03.2021 21:00, flixtier

How many moles at STP are in 4.2 L of H2? Hydrogen = 1.0079 g/mol
Answer in numbers only and the correct number of significant figures. If answering in scientific notation, do
as follows(with correct number of sigfigs.) Ex. 1.11x102 for 111

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How many moles at STP are in 4.2 L of H2? Hydrogen = 1.0079 g/mol
Answer in numbers only and...