Acetylene gas, C2H2 (8). can be produced be reacting solid calcium carbide, CaCz, with water. The
products are acetylene and calcium hydroxide. What volume of acetylene gas is produced when
5.20 g of calcium carbide reacts with excess water at 25°C and 715 torr? Since it's collected over
water, don't forget to subtract the water vapor pressure of 23.8 torr.

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the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.

answer: mole of the gas

answer: mole of the gasexplanation: