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1. The Henry's law constant for helium gas in water at 30 ∘C is 3.7×10−4M/atm; the...

1. The Henry's law constant for helium gas in water at 30 ∘C is 3.7×10−4M/atm; the constant for N2 at 30 ∘C is 6.0×10−4M/atm.

   a. If helium gas is present at 2.1 atm pressure, calculate the solubility of this gas.

   b. If N2 is present at 2.1 atm pressure, calculate the solubility of this gas.

2. A solution is made containing 14.7 g of CH3OH in 186 g H2O.

   a. Calculate the mass percent of CH3OH.

   b. Calculate the molality of CH3OH.

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