How many grams of Fe are required to produce 123.0 grams of Pb? Use the reaction below to solve the problem: Fe + Pb(SO4)2 Pb + Fe2(SO4)3

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules