Question

You measure out 3.00 mL of 0.100 M Co(NO3)2, place it in a test tube and add 7.00 mL of water. What is the concentration of the diluted solution in the test tube?
10/3 the volume, 3/10 the concentration.
0.1 M x (3 mL/10 mL) = ?
0.03

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