In a laboratoy experiment, a 10.0-mL sample of NaCI solution is poured into an e

Question

In a laboratoy experiment, a 10.0-mL sample of NaCI solution is poured into an evaporating dish with a mass of 24.10 g. The combined mass of the evaporating dish and NaCI solution is 36.15 g. After heating, the evaportaing dish and dry NaCI have a combined mass of 25.10 g.

a. What is the mass percent (m/m) of the NaCI solution?

b. What is the molarity (M) of the NaCI solution?

c. If water is added to 10.0 mL of the initial NaCI solution to give a final volume of 60.0 mL. What is the molarity of the diluted NaCI solution?

In a laboratory experiment, a 10.0-mL sample of NaCI solution is poured into an evaporating dish with a mass of 24.10 g. The combned mass of the evaportaing dish and NaCI solution is 36.18 g. After heating, the evaporating dish and dry NaCI have a combined mass of 25.40 g.

a. What is the mass percent (m/) of the NaCI solution?

b. What is the molarity (M) of the NaCI solution?

c. If water is added to 10.0 mL of the inital solution to give a final volume of 70.0 mL, what is the molarity of the diluted NaCI solution?

Explanation / Answer

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