Thursday
April 17, 2014

Homework Help: Chemistry revision

Posted by Tif on Monday, April 29, 2013 at 2:32pm.

all these questions I got wrong on my homework today ...I'm trying to find out why and what the correct answers were .. please help

How many grams of solute are required to make a 504 mL solution of copper (I) nitrate with a concentration of 1.3317 M?
before I had help and was told it was 126 g..it didn't work

When 84.2730 grams of solute are used to make a 504 mL solution of copper (I) nitrate, what is the concentration of the solution? I also recieved help and told it was .9..it also didn't work.

A student mixes 450 mL of water and 116 mL of 7.90 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
this question came out negative so I knew it was wrong

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