Question

what is the mass percentage of nitrogen, hydrogen and oxygen in urea​

Answer 1

46.6%

Given Urea= NH2- CO- NH2 And we know that Total mass of urea = 60 Mass of nitrogen = 14 Two molecules of nitrogen= 2*14= 28 Percentage of nitrogen = Mass of Nitrogen/(Urea ) x 100 = 28/60 x 100 = 46.6% Hence Percentage of nitrogen in urea is 46%

Answer 2

$\huge\bold\color{purple}{46.6}$