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Basic Chemistry: Problems and Solutions

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1. You are given 410.0 mL of a 1.581 M K2CO3 solution. There are ______ moles of
K
+
present in the solution.
2. You are given 83.5 mL of a 2.101 M solution of AgNO3. If all of the water is
allowed to evaporate, then the mass of AgNO3 left in the container is ______ g.
3. If 25.0 mL of a 4.525 M solution of HCl was poured into 112.0 mL of distilled
water, the concentration of the resulting solution is _________ M.
4. In order to make 250 mL of a 0.100 M HNO3 solution from a 15.9 M stock
solution, then ________ mL of the 15.9 M stock HNO3 solution is needed.
5. In order to make 500.0 mL of a 1.835 M MgCl2 solution, then ________ g of
MgCl2 is needed.

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This solution offers detailed step-wise solution to five numerical problems in basic chemistry.

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