You have recorded the volume of hydrogen gas produced in the reaction and you have calculated the number of moles used in the first part of the experiment. Based on this information, what is the molar volume of hydrogen gas at room temperature

quartz

explanation:

thats a little if u want the answer just look it up on google thats what i do haha : )

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.