1.A student mixes baking soda and vinegar in a glass. The results are a bubbly chemical reaction. Do you think any new substances are being created in this mixture? If so, how do you know? 2.Suppose this was done on top of a balance. Do you think the mass would change as the reaction proceeded?

3.What do you think would happen to the mass if the reaction took place inside a sealed plastic bag?

1 is the answer to this problem

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.

c. orbital shape i hope this is correct