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1. 86 g
2. 87.73%
3. 1370 mL
1. Iron oxygen to iron (II) oxide. How many moles of oxygen gas, O2, are needed burns in form to produce 2.56 moles of iron (III) oxide? 4 Fe (s) + 3 O2(g) ? 2 Fe2O3 (s) 2. Phosphorus trichloride forms when white phosphorus reacts with chlorine. A sample of PCl weighing 300.5 g was collected from a reaction of 77.25 g of P4 with excess chlorine. What is the percent yield of PCl3? P (s) + 6 Cl2 (g) 4 PCl3 (g) 3. How many milliliters of 0.212 M HCI are required to react with 14.5 g of CaCO,? 2 HCl (aq) + CaCO3 (s) ? CaCl2 (aq) + CO2 (g) + H2O (1)
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mol 0 no 2 mel Iho 23.5 max (3733) 342 olume eloo. 289 6 212 0.311.3667 L

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