An athlete had 14% body fat by mass. What is the weight of fat, in pounds, of a 82-kg athlete? Express your answer to two significant figures & include the appropriate units.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

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.

What four properties do all waves have in common