Which equivalence factor set should you use to convert 2.68 x 1011 atoms of ag to grams of ag?
(2.68 x 1011 atoms ag/1 mol ag)(1 mol ag/107.88 g ag)
(1 mol ag/2.68 x 1011 atoms ag)(107.88 g ag/1 mol ag)
(1 mol ag/6.02 x 1023 atoms ag)(107.88 g ag/1 mol ag)
(2.68 x 1011 atoms ag/6.02 x 1023 atoms ag)(107.88 g ag)

Explanation:

According to Avogadro's law, 1 mole of every substance contains avogadro's number of particles.

To calculate the moles, we use the equation:

For Ag

given atoms =

avogadro's number =

Putting values in above equation, we get:

1 mole of Ag weighs = 107.88 grams

Thus  moles of Ag will weigh= grams.

the answer is option a.

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.