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3 years ago

What is the total mass of oxygen contained in 8.20g of benzoic acid (C6H5COOH)

Chemistry

1 answer:

VashaNatasha [74]3 years ago

4 0

Answer:

Mass of oxygen = 2.2 g

Explanation:

Given data:

Mass of benzoic acid= 8.20 g

Mass of oxygen= ?

Solution:

Molar mass of oxygen = 16×2 g/mol

Molar mass of C₆H₅COOH = 7×12 + 1×6 + 2×16

Molar mass of C₆H₅COOH = 84 + 6 + 32

Molar mass of C₆H₅COOH = 122g/mol

Mass of oxygen in 8.20 g of C₆H₅COOH :

Mass of oxygen = 32 g.mol⁻¹/122 g.mol⁻¹ × 8.20 g

Mass of oxygen = 2.2g

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Note that:

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<em>Givens</em>

dimensions of object

mass of object

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To find density, you need volume.

<u>Volume</u>

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