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13. What is the mass in grams of a) 7.10 x 10mol of oxygen gas? b) 3.14 x 102 mol of phosphorus (P.)? c) 0.452 mol of magnes

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13 ax no. of mole of a = 7.1ox 103 mol nxmolar mass = 7.10x10 mod x 329 mua mars of q = 0.2272 g. mor by 3,14 x 162 mol of Py

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