The term of energy means that the total amount of energy at the start and end of an energy transformation must be the same. a. transfer b. releasing c. production d. conservation

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present