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Elan Coil [88]
4 years ago
9

Find the mass in grams of hydrogen gas produced when 14.0 moles of HCl is added to an excess amount of magnesium.

Chemistry
1 answer:
NemiM [27]4 years ago
5 0
<h3><u>Answer;</u></h3>

14.0 g of hydrogen gas

<h3><u>Explanation;</u></h3>

The equation for the reaction is

Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)  

From the equation, 2mol HCl will produce 1 mol H2

Moles of HCl =14 moles

Therefore; 14 moles of HCl will produce 7 moles of hydrogen gas

1 mole of Hydrogen gas = 2.0 g/mol

Thus;<em> mass of 7.0 moles of H2 = 7 × 2.0 g/mol </em>

<em>                                                    = </em><u><em>14.0 g</em></u>

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