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A balloon contains 10.0 g of Ne(g). At constant temperature, 10.0 g of Ar(g) is added....

A balloon contains 10.0 g of Ne(g). At constant temperature, 10.0 g of Ar(g) is added. What happens? (hint: how many moles of each gas do you have?) A. The volume of the balloon expands by more than 2 times. B. The balloon doubles in volume. C. The balloon stays the same volume, but the pressure decreases. D. The balloon stays the same volume, but the pressure increases. E. The volume of the balloon expands by less than 2 times.

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