Urea Question~~!?

Question

Question 19
Glycine is one of the amino acids that forms proteins. Protein that is not required in the body is broken down in the liver. Unwanted nitrogen is converted to urea and eliminated in the urine.
H2NCH2COOH glycine (H2N)2CO urea
The maximum mass of urea (relative molecular mass = 60) that could be eliminated as a result of the breakdown of 1.00 g of glycine (relative molecular mass = 75) is, in gram,
A. 0.40
B. 0.80
C. 1.00
D. 1.60

Answer 1

You will have to balance the equation. At least, it appears that 2 moles of glycine are needed to form 1 mole of urea by the amine balance. From that you can divide by 1 g of glycine by its mole wt to get the moles of glycine reacting. From the reaction, you get half as many moles of urea, and by multiplying this mole amt by 60, the mass.