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प्रश्न
Calculate the relative molecular mass of:
(NH4)2 Cr2O7
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उत्तर
(2N)28 + (8H)8 + (2Cr)2 x 51.9+ (7O)7 x 16 = 252
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संबंधित प्रश्न
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2 X V.D. = Molecular mass.
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\[\ce{2KMnO4 -> \underset{\text{solid residue}}{K2MnO4 + MnO2} + O2}\]
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