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adell [148]
3 years ago
10

How many moles of hydrogen gas will be produced when 12 g of Mg will react completely with excess of an acid according to the fo

llowing reaction? 2 Mg + 2 HCI — 2 MgCl2 + H,
Chemistry
1 answer:
lina2011 [118]3 years ago
7 0

Answer:

0.49 mol

Explanation:

Step 1: Write the balanced equation

Mg + 2 HCI ⇒ MgCl₂ + H₂

Step 2: Calculate the moles corresponding to 12 g of Mg

The molar mass of Mg is 24.31 g/mol.

12g \times \frac{1mol}{24.31g} = 0.49mol

Step 3: Calculate the moles of H₂ produced by 0.49 moles of Mg

The molar ratio of Mg to H₂ is 1:1. The moles of H₂ produced are 1/1 × 0.49 mol = 0.49 mol.

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Answer:

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<u>Step 1: </u>Data given

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The precipitate is CuS.

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