An iron ore sample contains plus other impurities. A 729-g sample of impure iron ore is heated with excess carbon, producing 277 g of pure iron by the following reaction: What is the mass percent of in the impure iron ore sample?

Question

Damion Alvarado

Chemistry

11 January, 21:49

An iron ore sample contains plus other impurities. A 729-g sample of impure iron ore is heated with excess carbon, producing 277 g of pure iron by the following reaction: What is the mass percent of in the impure iron ore sample?

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Answers (1)

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Evangeline Mckee · Answer 1

m (total) = 729 g

m (pure) = 277 g

Mass of impure iron ore sample:

W (impure) - mass percent

W (impure) = m (total) - m (pure) / m (total) = 729 g - 277 g / 729 g

= 0,62 ⇒ 62%