Question

Complete the equation. All help needed on this. Thank you.

Answer 1

Number of total atoms :

Left=right=19

Further explanation

The empirical formula (EF) is the smallest atomic ratio of the constituent elements.

The empirical formula shows the simplest comparison of the molecules making up the molecule

Molecular formula (MF) is a formula that shows the number of atomic elements that make up a compound.

(EF)n = MF

• (NH₄)₂Cr₂O₇

N=2

H=4 x 2 = 8

Cr=2

O=7

• Cr₂O₃

Cr=2

O=3

• N₂

N=2

• 4H₂O

H=4x2=8

O=4

• Total atoms :

Left = 2+8+2+7=19

Right=2+3+2+8+4=19

so the equation is said to be balanced