1. In electroplating a silver spoon, how many moles of electrons are required to deposit 10.8g of silver (Ag=108)

0.1 moles of electrons

Explanation:

Electroplating is a process in which a metal is used to cover the surface of another metal for protection or beautification purposes.

The reduction of the silver is captured in the equation;

Ag^+(aq) +e > Ag(s)

We were already told in the question that the mass of silver is 108g

1 mole of electrons is needed to deposit 108g of silver

x moles of electrons is required to deposit 10.8 g of silver

x= 1 ×10.8/108

x= 0.1 moles of electrons

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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.