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प्रश्न
Water can be obtained from various sources. Are all these samples of water chemically identical?
लघु उत्तरीय
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उत्तर
Yes, provided the samples are pure, they are chemically identical because every water molecule has the same composition: two hydrogen atoms and one oxygen atom. Their hydrogen-to-oxygen mass ratio is always 1:8. Unpurified samples may contain different dissolved impurities and therefore differ chemically.
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