madison2184 madison2184

11-05-2022
Chemistry

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When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas are?

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Аноним Аноним

12-05-2022

The reaction given by

Li+H_2O—»Li(OH)_2+H_2

Moles of Li

19.34/6.99
2.8mol

1 mol Lithium produces 1 mol H_2

2.8mol produces

2.8mol H_2

i.e 2.8(2)=5.6g hydrogen

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