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Core 5

Core 5

Q Question 1 0 / 0.2 pts Calculate the percent concentration of a solution, made by adding 59.4 g of NaHCO3 dissolved in 200.0 mL of water. Question 2 0.2 / 0.2 pts Calculate the percent concentration (v/v) of a solution of 13.7 mL of H2SO4 dissolved in enough water to make 68.0 mL of solution. Question 3 0.2 / 0.2 pts Calculate the volume of solute needed to make 30.0 mL of 10.6% (v/v) ethanol solution. Question 4 0.2 / 0.2 pts Calculate the mass of solute needed to make 750.0 mL of 4.1% (w/v) sodium lactate solution. Question 5 0 / 0.2 pts Calculate the mass of solute needed to make 3.8L of 2.4% (w/v) CuSO4 solution. You Answered

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1.Correct Answer 22.9 margin of error +/- 5 2.Correct Answer 20.1 margin of error +/- 0.5 3. Correct Answer 3.2 margin of error +/- 0.5 4.Correct Answer 30.8 margin of error +/- 0.5 5.Correct Answer 91.2 margin of error +/- 0.5