Question

From the information that follows, determine the mass of substance C that will be formed if 45.0 g of substance A reacts with 23.0 g of substance B. (Assume that the reaction between A and B goes to completion.)
a. Substance A is a gray solid that consists of an alkaline earth metal and carbon (37.5% by mass). It reacts with substance B to produce substances C and D. Forty million trillion formula units of A have a mass of 4.26 mg.
b. 47.9 g of substance B contains 5.36 g of hydrogen and 42.5 g of oxygen.
c. When 10.0 g of substance C is burned in excess oxygen, 33.8 g of carbon dioxide and 6.92 g of water are produced. A mass spectrum of substance C shows a parent molecular ion with a mass to charge ratio of 26.
d. Substance D is the hydroxide of the metal in substance A.


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  • CreatedMay 04, 2015
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