How many gram-atoms of Oxygen are present in of potassium dichromate ()?

Name: JEE Advanced Chemistry
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Question

How many gram-atoms of Oxygen are present in $1 	ext{ mole}$ of potassium dichromate ($K_2Cr_2O_7$)?

Prashant Kotian · Accepted Answer

Correct answer: 7. "Gram-atom" is a mole of atoms. has 7 oxygen atoms per formula unit, so 1 mole has 7 gram-atoms. [3, 23]

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