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In one experiment, the total gas pressure above a beaker was 1.2 atm. The beaker contained...

In one experiment, the total gas pressure above a beaker was 1.2 atm. The beaker contained 1.5 kg
water, and the molar fraction of methane in the gas was 0.01. What mass of methane was dissolved in the water? assume that
the gas behaved like an ideal gas.

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