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Sergio [31]
3 years ago
13

Using this equation 2H2+O2–>2H2O when 47g of water are produced, how many grams of hydrogen must react

Chemistry
1 answer:
hoa [83]3 years ago
6 0

You must react 5.3 g H_2 to produce 47 g H_2O.

<em>Step 1</em>. Calculate the <em>moles of H_2O</em>

Moles of H_2O = 47 g H_2O × (1 mol H_2O/18.02 g H_2O) =2.61 mol H_2O

<em>Step 2</em>. Calculate the <em>moles of H_2 </em>

Moles of H_2 = 2.61 mol H_2O × (2mol H_2/2 mol H_2O) = 2.61 mol H_2

<em>Step 3</em>. Calculate the <em>mass of H_2</em>

Mass of H_2 = 2.61 mol H_2 × (2.016 g H_2/1 mol H_2) = 5.3 g H_2

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