Plz solve 1st question
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Mass of 0.25 mole = 2.25g
mass of 1 mole = 2.25 * 4 = 9g
so, mass of one atom = 9 amu (atomic mass unit)
mass of 1 mole = 2.25 * 4 = 9g
so, mass of one atom = 9 amu (atomic mass unit)
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