Q10 of 203 Page 172

Find the mass of 2 moles of oxygen atoms?

Molar mass of oxygen atom(O) = 16g

Number of moles present = 2 mole


As we know that, Number of moles = G mass of an element/molar mass of an element


Hence mass of an element = No. of moles X molar mass of an element.


Mass of oxygen atoms = 2×16 = 32g


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