chemical-aritmatic

Related Questions

• The vapour density of a gas is 11.2.The volume occupied by 11.2 g of the gas at ATP will be

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• Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is

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• If ${N_A}$is Avogadro’s number then number of valence electrons in 4.2 g of nitride ions $({N^{3 - }})$

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• Given \[P = 0.0030m\], \[Q = 2.40m\], \[R = 3000m\], Significant figures in \[P,\,Q\] and \[R\] are respectively

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