Monday
March 2, 2015

Homework Help: Chemistry

Posted by Adam on Friday, January 28, 2011 at 12:00am.

Could someone help me with these problems;

A)If 5.97mL of a solution of NaCl contains 2.54g of sodium ion, what is the molarity of the sodium chloride solution?
-I know M=#moles solute/L
but when I do this I get 7.28*10^-3 which is wrong, the answer should be 1.85*10^-2

B) Combustion analysis of a 22.0-mg sample of the painkiller morphine produced 13.2 mg of water. What is the % by mass of hydrogen in morphine?

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