Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen, nitrogen, and sulfur. The formula for a sample of anthracite is C 240 H 90 O 4 NS . Calculate the amount of carbon in 40.0 kg of the sample.

The amount of carbon is 37.40 kg.

Explanation:

Molecular weight of anthracite (C240H90O4NS) = (12×240) + (1×90) + (16×4) + 14 + 32 = 2,880 + 90 + 64 + 14 + 32 = 3,080 g/mol

Molecular weight of carbon in anthracite = 12×240 = 2,880 g/mol

Mass of sample of anthracite = 40 kg

Amount of carbon = 2,880/3,080 × 40 kg = 37.40 kg

a graduated cylinder.

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