The “push” needed to start a chemical reaction is the: enzymatic energy. endothermic energy. activation energy. reactant energy.

The specific heat of ice is 0.5 calories/gram°c. 20 grams of ice will require ll calories to raise the temperature 1°c. 05

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13

What part of the body contains bile, an enzyme that break down lipids?