Answer to Question #140028 in Inorganic Chemistry for khaled

Question #140028
What mass of melamine, C3N3(NH2)3, will be obtained from 124.0 kg of urea, CO(NH2)2, if the yield of the overall reaction is 74.0 % ?
Express your answer to three significant figures and include the appropriate units.
1
Expert's answer
2020-10-23T09:16:01-0400

6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO2

M(urea) = 60 kmoles/kg

From 6 x 60 kg of urea it is produced 126 kg of melamine;

From 124.0 kg – X kg

X = 47.95 kg (of melamine)

If the yield is 74% so the mass of melamine will be 47.95 x 0.74= 35.4830kg

Answer: ~35.483kg

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