calculate the mass of calcium phosphate (in kilograms)

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter19: The Chemistry Of The Main-group Elements
Section: Chapter Questions
Problem 87QRT: Assume that the radius of Earth is 6400 km, the crust is 50. km thick, the density of the crust is...
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calculate the mass of calcium phosphate (in kilograms) that must be used to produce 29.0 kg of phosphorus.

Chromium is obtained by heating chromium(III) oxide with carbon. Calculate the mass percent of chromium in the oxide, and then use this value to calculate the quantity of Cr2O3 required to produce 630. kg of chromium metal.

 

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