Question

Urea, (NH₂)₂CO, is an organic compound that is commonly used as fertilizer

a. What is the molecular mass of urea?

b. How many molecules are present in 350g of the compound?

c. How many molecules are there in 0.08 mole of urea?

d. what is the mass of 1.5 X 10⁸ molecules of urea?

Answer 1

Molecular mass of urea $= 60.06 g/mol$

Moles $=\frac{350}{60.06}=5.83moles$

Mass $=1.5×10^8×60.06=9.009×10^9grams$