Suppose 5.00g of Zn metal is completely consumed in an HCl solution to produce zincil) choride (ZnCl2) and hydrogen gas (H2) according to the following reaction:
Zn(s) + 2HCl(aq) > ZnCl2(aq) + H2(g)
Part A
How many moles of ZnCl2 are produced?
moles =
Part B
How many grams of H2 are produced?
grams =

2h2s + 3o2 2so2 + 2h2o which option gives the correct mole ratios? h2s: so2 = 2: 2 and o2: h2o = 3: 2 h2s: so2 = 2: 3 and o2: h2o = 3: 2 h2s: so2 = 4: 4 and o2: h2o = 5: 4 h2s: so2 = 4: 6 and o2: h2o = 4: 4

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false