Friday
December 19, 2014

Homework Help: Chemisty

Posted by Veronica on Tuesday, June 17, 2014 at 9:16pm.

A 0.411 g sample of powdered copper mixed with an inert, soluble additive was fully consumed by 23.4mL of 0.602M nitric acid, producing copper (II) nitrate, water, and nitric oxide. What is the percent copper by mass in the sample?

3Cu + 8HNO3 = 3Cu(NO3)2 +2NO =4H2O

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