Dung dịch được tạo ra do hòa tan 5gam chất tan X (không bay hơi, không điện li) trong 100 gam nước, bắt đầu đông đặc ở -1,550C. Nước có hằng số nghiệm đông là 1,86. Khối lượng phân tử của X là: A.46
B.58
C.60
D.74

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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

explanation: