15. An energy change is involved in an exothermic process but NOT an endothermic process
an endothermic process but NOT an exothermic process
BOTH an exothermic process and an endothermic process
O NEITHER an exothermic process nor an endothermic process

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

How many neutrons does an element have if its atomic number is 50 and its mass number is 166