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May 24, 2015

Homework Help: Chemistry

Posted by Paul on Tuesday, February 8, 2011 at 1:06pm.

A student dissolves 18.9 grams of Zn(NO3)2 [molar mass = 189] in enough water to make 500.0 of solution. A 100.0 ml portion of this solution is diluted to 1000.0 ml.What is the [NO3 ] in the second solution?
A) 0.0100M B) 0.0200M C) 0.0300M
D) 0.0400M E) 0.0500M

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