chemical-aritmatic

Related Questions

• The percentage of oxygen in $NaOH$ is

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• A solution containing $N{a_2}C{O_3}$ and $ NaOH $ requires 300 ml of 0.1 N HCl using phenolpthalein as an indicator. Methyl orange is then added to the above titrated solution when a further 25 ml of 0.2 N HCl is required. The amount of NaOH present in solution is $(NaOH = 40,\,N{a_2}C{O_3} = 106)$

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• A 400 mg iron capsule contains 100 mg of ferrous fumarate, ${(CHCOO)_2}Fe$. The percentage of iron pasent in it is approximately

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• $2g$ of oxygen contains number of atoms equal to that in

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• The specific heat of a metal is 0.16 its approximate atomic weight would be

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