Gold reacts with the elements in Group 7 of the periodic table. 0.175 g of gold reacts with chlorine.
The equation for the reaction is:
2 Au + 3 Cl2 → 2 AuCl3
Calculate the mass of chlorine needed to react with 0.175 g of gold.
Give your answer in mg
Relative atomic masses (Ar): Cl = 35.5 Au = 197
M0.22 0-173
moc RF: 213

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.