Question

15. (15 points) Phosphorus will react with oxygen to form diphosphorus pentoxide, P2O5. 4P(s) +502\8) ► 2P,0,(s) How many grams of P205 are formed when 8.23 g of Preact with excess oxgen. Set up a calculation to determine the mass of P2Os that can be generated. Clearly indicate the units that your answer will have. The molar mass of P2Os is 141.94 g/mol. Partial credit will be given for setup (useful information & strategy with justification / logic) and significant progress towards an answer. Il molp 2 mol Ros 8.23g / 30.979/mp 4 mol

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Answer 1

. mole 1. No. of moles of phospracy = 8238 m g = 0.265 moles 4 Pcs) +5026) - QP205 (3) from egr 4 moles p react with Oz give a moles Ros 0.265 moles p p give how many moles of Bcs - 2x0.265 moles Of Bos 4 = 0.1325 moles of Ros mass of BO5 = 0.1325 moles x 141949 = 18.80 grams of P205 Answer =18.80 g of 205