#22.) in the reaction 2co(g) + o2(g) → 2co2(g), what is the ratio of moles of oxygen used to moles of co2 produced? select one: a. 1: 1 b. 2: 1 c. 1: 2 d. 2: 2 #23.) according to this chemical reaction, which is the number of grams of fe produced from 3.4 moles of h2? fe3o4 (cr) + 4 h2 (g) → 3 fe (cr) + 4 h2o (l) select one: a. 142 b. 253 c. 102 d. 91.4 #24.) for the reaction 2na + cl2 → 2nacl, how many grams of chlorine gas are required to react completely with 111.9 mol of sodium? select one: a. 3970 b. 7930 c. 1.59e4 d. 2640