please help with these find the total number of atoms for EACH INDIVISUAL PROBLEM Brainlist if right 25 points

HNO₃= 5 atoms

SO₃= 4 atoms

NH₃= 4 atoms

2 Cl₂= 8 atoms

NaOH= 3 atoms

CaCO₃= 5 atoms

FeS₂= 3 atoms

KNO₃= 5 atoms

NaCl= 2 atoms

3 O₂= 6 atoms

K₂SO₄= 7 atoms

2 KOH= 2 atoms

KMnO₄= 6 atoms

CaCO₃= 5 atoms

4 CO₂= 12 atoms

C₂H₄O₂= 8 atoms

3 N₂O= 9 atoms

2 HNO₃= 10 atoms

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )