Question

How many moles of cacl2 are in 250 ml of a 3.0 m of cacl2 solution?

Answer 1

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Answer 2

To determine the number of moles of CaCl2 in 250 mL of a 3.0 M of CaCl2 solution, first note that the unit M refers to molarity which is a unit of concentration that means moles per liter of solution. Thus, simply convert 250 mL to liters then multiply it to 3.0 M. We then have:

250 mL x 1 L/1000 mL x 3 mol/L CaCl2 = 0.75 mol CaCl2

Thus, there are 0.75 mol CaCl2 in 250 mL of a 3.0 M of CaCl2 solution.