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2 years ago

How many grams of calcium are required to free 8 grams of hydrogen gas from hydrochloride acid, HCl?

Chemistry

1 answer:

Gala2k [10]2 years ago

4 0

Answer:

The answer to your question is 160 g of Calcium

Explanation:

Data

mass of Calcium = ?

mass of Hydrogen = 8 g

reactant = HCl

Process

1.- Write the balanced chemical reaction

Ca + 2HCl ⇒ CaCl₂ + H₂

2.- Look for the atomic number of Calcium and hydrogen

Calcium = 40 g

Hydrogen = 1 x 2 = 2 g

3.- Use proportions to calculate the mass of calcium needed.

40 g of Calcium ---------------- 2 g of hydrogen

x ----------------- 8 g of hydrogen

x = (8 x 40) / 2

x = 320/2

x = 160 g of Calcium

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