An alloy has Fe, Co and Mo equal to 71%, 12% and 17% respectively

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

An alloy has Fe, Co and Mo equal to 71%, 12% and 17% respectively. How many cobalt atoms are there in a cylinder of radius 2.50 cm and a length of 10.0 cm? The density of alloy is 8.20 g/mL. Atomic mass of cobalt = 58.9.

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