To make a 2.0-mole solution, how many moles of solute must be dissolved in 0.50 liters of solution?

0.25 moles solute

0.50 moles solute

1.0 mole solute

2.0 moles solute

There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

 Molarity = 2.0 mole / L solution

2.0 mole / L solution ( 0.50 Liters ) = 1 mole solute

The correct answer is the third option. One mole of solute needed to make 0.50 liters of 2M solution.

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.