8. Which of the following states the correct molar equivalence between substances in the following chemical reaction ? The equation is already balanced. 9. Given the following grilled cheese recipe, how many total complete grilled cheese sandwiches can be made if you have 20 slices of bread and 20 slices of cheese in your kitchen?

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.