chemisty

how many grams of Na are needed to react with H2O to liberate 400mL of H2 gas at STP?

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1. Here is a solved example of a stoichiometry problem. Just follow the steps. Remember that 400 mL can be converted to moles by 0.400/22.4 = moles.
http://www.jiskha.com/science/chemistry/stoichiometry.html

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posted by DrBob222

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