On June 21st which location below will experience the longest amount of daylight? 1. Equator

2. North pole

3. Tropic of Capricorn

In order to calculate the amount of heat transferred you must know the __ and specific heat of the material, as well as the change in temperature. a. volume b. density c. mass d. enthalpy

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.