chemical-aritmatic

Related Questions

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• A hydrocarbon contains 86% carbon, 488ml of the hydrocarbon weight 1.68 g at STP. Then the hydrocarbon is an

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• The atomic weights of two elements A and B are 40 and 80 respectively. If $x$ g of A contains $y$ atoms, how many atoms are present in $2x$ g of B

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• Volume of a gas at STP is $1.12 \times {10^{ - 7}}$cc. Calculate the number of molecules in it

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• 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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