Convert the following into moles. a) 32g of sulphur - di - oxide gas. b 92g of sodium atoms.
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(a) Molecular weight of oxygen in grams = 32 g of oxygen= one mole of oxygen gas
Thus, 12 g of oxygen=321×12=0.375 moles
(b) Molecular weight of water (H2O) in grams= 2+ 16=18 g=one mole of water
Thus, 20 g of water=181×20=1.111 moles
(c) Molecular weight of carbon dioxide (CO2) in grams=12+2×16=44 g=one mole of carbon dioxide
Thus, 22 g of carbon dioxide =441×22=0.5 moles
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Answer:
0.5 miles of sulphur di oxide
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