If 0.250 liters of solution contains 0.030 moles of KOH, what is the molarity of the solution?
Were you given moles?
Yes No → divide by formula mass
Were you given liters?
Yes No divide by 1000 ml

The molarity of KOH solution is 0.12 M

Explanation:

To calculate molarity of solution, we use the equation:

We are given:

Moles of KOH solution = 0.030 moles

Volume of solution = 0.250 L

Putting values in above equation, we get:

Hence, the molarity of KOH solution is 0.12 M

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.