Solid urea, CN2OH4, (MM=60.06 g) and liquid water are produced by heating ammonia
(MM=17.03 g) gas and carbon dioxide (MM=44.01 g) gas according to the equation
below. This reaction is known to proceed with a percent yield of 85.5%. What is the
theoretical yield if 13.74 g of urea is actually collected?

2NH3(g) + CO2 (g)→CN2OH4(s) + H2O(1)

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided