Question

Part A:

Use Henry's law to determine the molar solubility of helium at a pressure of 1.7 atm and 25 ∘C. Henry’s law constant for helium gas in water at 25 ∘C is 3.70⋅10−4M/atm.

Express your answer using two significant figures.

Part B:

To what volume should you dilute 120 mL of an 8.00 M CuCl2 solution so that 49.5 mL of the diluted solution contains 4.46 g CuCl2?

Express your answer in milliliters.

Part C:

Silver nitrate solutions are often used to plate silver onto other metals. What is the maximum amount of silver (in grams) that can be plated out of 5.0 L of an AgNO3 solution containing 3.3 % Ag by mass? Assume that the density of the solution is 1.01 g/mL.

Express your answer using two significant figures.

Part D:

A dioxin-contaminated water source contains 0.084 % dioxin by mass.

How much dioxin is present in 2.7 L of this water? Assume a density of 1.00 g/mL.

Express the answer in grams using two significant figures.

Answer 1