1 4 + 5O2 → P4 O10 In the reaction, 124 g of P4 reacts with O2 to form 284 g of P4 O10 . How many grams of O2 are involved in the reaction?A) 150 g B) 160 g C) 125 g D) 175 g 2 2 O3 → 3Na2 O + 2Fe In the reaction, 138 g of Na react with 160 g of Fe2 O3 to produce 186 g of Na2 and Fe. How many grams of Fe are produced?A) 112 g B) 110 g C) 114 g D) 115 g 3 4 + 3S8 → 8P4 S3 In the reaction, 992 g of P4 reacts with how many grams of S8 to produce 1760 g of P4 S8 ?A) 760 g B) 75 g C) 750 g D) 768 g 4 2 S3 In the reaction, 224 g of Fe are added to 192 g of S to produce how many grams of Fe2 S3 ?A) 400 g B) 412 g C) 416 g D) 420 g 5 3 → 2Na + 3N2 In the reaction, 390 g of NaN3 produces 138 g of Na and how many grams of N2 ?A) 200 g B) 215 g C) 252 g D) 266 g 6 3 H8 + 5O2 → 3CO2 + 4H2 O In the reaction, 44 g of C3 H8 and 160 g of O2 produce 132 g of CO2 and how many grams of water?A) 72 g B) 70 g C) 75 g D) 80 g 7 2 O → 2KOH + H2 In the reaction, 156 g of K is added to 72 g of water to produce how many grams of KOH and 4 g of H2 ?A) 224 g B) 266 g C) 288 g D) 320 g 8 2 In the reaction, how many grams of HgO produces 402 g of Hg and 32 g of O2 ?A) 200 g B) 235 g C) 255 g D) 434 g 9 3 → 2KCl + 3O2 In the reaction, 244 g of KClO3 produces 96 g of O2 and how many grams of KCl?A) 140 g B) 148 g C) 188 g D) 200 g 10 2 → CO2 + NO In the reaction, 84 g of CO is added to 138 g of NO2 to produce 90 g of NO and how many grams of CO2 ?A) 90 g B) 120 g C) 134 g D) 132 g
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