Map General Chemistry 4th Edition University Science Books presented by Sapling

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Map General Chemistry 4th Edition University Science Books presented by Sapling Leaming Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the equation, Heavy water is water with the isotope deuterium in place of ordinary hydrogen, and its formula is D20. The above reaction can be used to produce heavy ammonia, NDs(g), according to the equation, quired to produce The mass of deuterium, D, is 2.014 g/mol. Number g D,O Previous O Check Answer (0 Next a Exit | Hint

Explanation / Answer

Molar mass of ND3 = 14.0067 + 3(2.014) = 20.0487 g/mol

Number of moles of ND3 = (450.0 x 10-3) / 20.0487 = 0.02244 moles

1 mole of ND3 requires 3 moles of heavy water in the balanced reaction, so 0.02244 moles of it will require 3 x 0.02244 = 0.06732 moles of D2O

The molar mass of D2O = 2(2.014) + 15.999 = 20.027 g/mol

So the amount of D2O required = 0.06732 x 20.027 = 1.348 grams

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