an unknown gas is collected in the 850.0 ml vessel at 1.02 atm and 23 degrees c. the evacuated vessel has a mass of 138.45 g and the vessel and gas have a combined mass of 140.12 g find the molar mass of the gas

h let me think

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.