Question

solve fast please help me question in find molecular mass with perfect method linewise fast please
1.HNO3
2.H2O​

Answer 1

Answer:

1.63u

2.18g

Explanation:

molar mass of the chemical substance is equal to the sum of the atomic mass of the individual atoms.

Given

Atomic mass of H = 1u

Atomic mass of N = 14 u

Atomic mass of O = 16u

The molar mass of HNO3 is

(1 × 1) +(1 × 14) + (16×3) = 63 u.

ATOMIC MASS OF H=1

ATOMIC MASS OF O=16

SO, MOLECULAR MASS OF H2O: (2x1+16)=2+16=18g

Answer 2

Explanation:

1. mass of hydrogen+ mass of nitrogen+ mass of oxygen*3

= > 1 + 14 + 48 ( nitrogen = 14 u )

= > 63 amu ( hydrogen = 1 u)

(oxygen = 16 u)

2.mass of hydrogen*2 + mass of oxygen

= > 2 + 16

= > 18 amu