In which compound is the percent compositionby mass of chlorine equal to 42%?

(1) HClO (gram-formula mass = 52 g/mol)

(2) HClO2 (gram-formula mass = 68 g/mol)

(3) HClO3 (gram-formula mass = 84 g/mol)

(4) HClO4 (gram-formula mass = 100. g/mol)

Question

Chemistry

Stella Orr

23 September, 23:01

In which compound is the percent compositionby mass of chlorine equal to 42%?

(1) HClO (gram-formula mass = 52 g/mol)

(2) HClO2 (gram-formula mass = 68 g/mol)

(3) HClO3 (gram-formula mass = 84 g/mol)

(4) HClO4 (gram-formula mass = 100. g/mol)

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Answers (1)

Know the Answer?

Ellen Valencia · Answer 1

The answer is (3) HClO3. The percent composition mass of chlorine is equals to the mass of one Cl atom / gram-formula mass of the compound. So after calculation, we can get the right answer.

In which compound is the percent compositionby mass of chlorine equal to 42%?(1) HClO (gram-formula mass = 52 g/mol)(2) HClO2 (gram-formula mass = 68 g/mol)(3) HClO3 (gram-formula mass = 84 g/mol)(4) HClO4 (gram-formula mass = 100. g/mol)

In which compound is the percent compositionby mass of chlorine equal to 42%?

(1) HClO (gram-formula mass = 52 g/mol)

(2) HClO2 (gram-formula mass = 68 g/mol)

(3) HClO3 (gram-formula mass = 84 g/mol)

(4) HClO4 (gram-formula mass = 100. g/mol)