Question

answer urgently plzzz

Answer 1

a)_Since 6.02 x 10^23 atoms of hydrogen weigh 1.01 grams, and 6.02 x 10^23 atoms of oxygen weigh 16.00 grams, the total mass of water per 6.02 x 10^23 molecules is18.02 grams. The average water is 18, the deuteroxide is 20, and the tritiated water is 22。 Atomic mass of water (with some rounding) is 18.
b)-HNO3
1X1+1X14+3X16
1+14+48
 53 amu

Answer 2

Atomic mass of hydrogen =1u
Atomic mass of Oxygen = 16 u
Molecular mass of h2o = 2x1+16 = 18u

Atomic mass of H=1u, N= 14 u , O= 16u soMolecular mass of HNO3 = 1+14+ (3x16) = 63u