(07.05 MC) The graph shows a sample of gas when it is hot, cold, and at room temperature.Which statement is correct about curves B and C?

(06.02 LC) What happens to the particles of a solid when the solid changes into a liquid?

(07.01 LC) On which of the following factors does the amount of energy absorbed by an endothermic reaction depend?

(05.02 MC) What is the mass of a sample of NH3 containing 3.80 × 1024 molecules of NH3?

Mixing barbiturates with alcohol can cause a ________________ effects where the combines result is ___________than the sum of the effects of each drug along.  

(07.01 LC) Which statement is true about endothermic and exothermic reactions?

(07.01 LC) The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. What type of reaction does the diagram best represent?

(06.03 LC) Which of the following conditions remain constant in Gay-Lussac’s law?

(06.02 LC) A cooling curve has two flat lines, or plateaus. What does the plateau at the higher temperature represent?

(06.04 MC) What is the mass of 4.25 liters of N2 gas at STP?