Stoich.Sherman

.002kg x 1000g/1kg x 1mol of H2/2g of H2 x 22.4L/1mol of H2 x 1000ml/1L = 22400mL

22400mL x 1L/1000mL x 1 mol of H2/22.4L x 2g of H2/1mol of H2 x 1 kg/1000g = .002kg

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