Answer:
True
Explanation:
Significant digits include non-zero digits (unless the zero is between two non-zero numbers)
In 12,785.000, there are 5 non-zero digits:
1 2 7 8 5
The substances that influence the rate of reaction are usually one or more of the reactants, but can occasionally include products. ... The rate law is experimentally determined and can be used to predict the relationship between the rate of a reaction and the concentrations of reactants.
Answer:
H
2
O
2
(aq)+ClO
4
−
(aq)⟶O
2
(g)+ClO
2
−
(aq)
All atoms except H and O are balanced.
The oxidation number of Cl changes from 7 to 3. The change in the oxidation number is 4.
The oxidation number of O changes from -1 to 0. The change in oxidation number per O atom is 1.
Total change in the oxidation number for 2 oxygen atoms is 2.
To balance the increase in oxidation number with decrease in the oxidation number, multiply H
2
O
2
and O
2
with coefficients 2.
2H
2
O
2
(aq)+ClO
4
−
(aq)⟶2O
2
(g)+ClO
2
−
(aq)
To balance O atoms, add 2 water molecules on RHS.
2H
2
O
2
(aq)+ClO
4
−
(aq)⟶2O
2
(g)+ClO
2
−
(aq)+2H
2
O(l)
The oxygen atoms are already balanced.
This is the balanced chemical equation