chemical-aritmatic

Related Questions

• 250 ml of a sodium carbonate solution contains 2.65 grams of $N{a_2}C{O_3}$. If 10 ml of this solution is diluted to one litre, what is the concentration of the resultant solution (mol. wt. of $N{a_2}C{O_3}$=106)

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• Normality of 2M sulphuric acid is

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• The number of gram atoms of oxygen present in 0.3 gram mole of ${(COOH)_2}.2{H_2}O$is

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• The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight=78.4). Then minimum molecular weight of peroxidase anhydrous enzyme is

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• A compound contains atoms of three elements in $A$, $B$ and $C$. If the oxidation number of $A$ is +2, $B$ is +5 and that of $C$ is – 2, the possible formula of the compound is

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