Unit Test Answers

A chemist has 200 mL of a 10% sucrose solution. If she adds x milliliters of a 40% sucrose solution, what is the percent concentration of the final mixture?Which expression represents the total mass, in grams, of sucrose in the final mixture?

Which expression represents the total volume, in milliliters, of the final mixture?

In the long run, the cost of the refrigerator modeled by will be the cheapest, averaging $ per year.