[masmith010]

The textbook is Chemistry:Seventh Edition - Zumdahl. P.124 (145)

From the information below, determine the mass of substance C that will be formed if 45.0 grams of substance A reacts with 23.0 grams of Substand 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 milligrams.

b. 47.9 grams of substance B contains 5.36 grams of hydrogen and 42.5 grams of Oxygen.

c. When 10.0 grams of C is burned in excess oxygen, 33.8 grams of carbon dioxide and 6.92 grams 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.


*As of now, I have that A + B --> C + D, which is given, but i'm not quite sure how I go about tackling this problem.

[Astrokel]

Hi masmith010, take it step-by-step

Forty million trillion formula units of A have a mass of 4.26 milligrams.

Are you able to identify A base on this information?

[sjb]

Perhaps also see http://www.chemicalforums.com/index.php?topic=28859.5 ?

S