The number of moles of oxygen atoms in of is: | Mole Concept and Some Basic Concepts of Chemistry — Chem-Mantra

Mole Concept and Some Basic Concepts of ChemistryeasyMCQ SINGLE

Question

The number of moles of oxygen atoms in $0.1 \text{ mol}$ of $K_2Cr_2O_7$ is:

Answer: C

💡 Solution & Explanation

1 mole of $K_2Cr_2O_7$ contains 7 moles of O atoms. <br>$\text{Moles of O} = 0.1 \times 7 = 0.7 \text{ mol}$.

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