Copy of Percent Composition Practice (5/28/2026)

What is the percent composition for each atom in KMnO₃

Molar Mass:

Percent Compositions:

K

Mn

O

What is the percent composition for each atom in H₂SO₄

Molar Mass:

Percent Compositions:

H

S

O

What is the percent composition for each atom in C₃H₃O₂

Molar Mass:

Percent Compositions:

C

H

O

What is the percent composition for each atom in PbSO₄

Molar Mass:

Percent Compositions:

Pb

S

O

What is the percent composition for each atom in HCl

Molar Mass:

Percent Compositions:

H

Cl

What is the percent composition for each atom in HNO₃

Molar Mass:

Percent Compositions:

H

N

O

What is the percent composition for each atom in BeCl₃

Molar Mass:

Percent Compositions:

Be

Cl

What is the percent composition for each atom in CuBr₂

Molar Mass:

Percent Compositions:

Cu

Br

What is the percent composition for each atom in N₂S₂

Molar Mass:

Percent Compositions:

N

S

What is the percent composition for each atom in NaOH

Molar Mass:

Percent Compositions:

Na

O

H