Aprotein is a polymer that is made of a. simple sugars. c. amino acids. b. nitrogen and carbon dioxide. d. dna.

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.