1. What is the molarity of a 253 mL solution containing 0.5 moles of calcium nitrate? Show all work and give your answer with three sig figs.
2. A 115 gram sample of glucose ( C6H12O6) was used to make a 2.47 M solution. What is the volume of that solution? Show all work and give your answer with three sig figs. Note M(C6H12O6) = 180.16 g/mol.
3. An intern working in a research lab knocks over a beaker containing an important solution. The beaker originally contained 1.50 L of a 0.81 M solution, but after it spilled it only contained 1.19 L of solution. The intern decides to hide his mistake by refilling the beaker to contain 1.50 L again by adding pure water ( not realizing that this will dilute the solution). What is the new concentration of the solution? Show all work and give your answer with three sig figs.
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