Question

Solve on paper..☺️☺️calculate the mass of one mole and one molecule of urea.(NH2CONH2)​

Answer 1

Explanation:

0.2×2.5=0.625 moles of urea is required

no. of moles=MolarmassMass

we know that, 

no. of moles=0.625 moles 

Molar mass of urea=14+2×1+12+16+14+2×1=60g/mol

∴ Mass= No. of moles× Molar mass =0.625×60

=37.5g