Question

What feature of a chemical equation is used to balance the equation and make sure it obeys the law of conservation of mass?

a
numbers
b
coefficient
c
superscript
d
subscript

Answer 1

b. Coefficient.

Step-by-step explanation:

For example:

Zinc combines with oxygen to form zinc oxlde :

We have Zn and O2 forming ZnO:

2Zn + O2 = 2ZnO

The 2's before the Zn and ZnO balance the equation

Answer 2

b) coefficient

Step-by-step explanation:

Refer to this example:

CH4 +2 O2 → CO2+ 2 H2O

2 is used as a coefficient in this chemical equation.