On a very hot day, could you cool your kitchen by leaving the refrigerator door open? a. Yes, but it would be very expensive.
b. Yes, but only if the humidity is below 50%.
c. No, the refrigerator would exhaust the same amount of heat into the room as it takes out of the room.
d. No, the heat exhausted by the refrigerator into the room is more than the heat the refrigerator takes out of the room

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water