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PYQs/Chemistry/Mole Concept

Chemistry2018easy

Mole Concept

In which case is number of molecules of water maximum?

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Mole Concept

Also in 2018

A mixture of 2.3 g formic acid and 4.5 g oxalic acid is treated with conc. $H_2SO_4$ . The evolved gaseous mixture is passed through KOH pellets. Weight (in g) of the remaining product at STP will be

Other years

The highest number of helium atoms is in

Which one of the followings has maximum number of atoms ?

Suppose the elements X and Y combine to form two compounds $XY_2$ and $X_3Y_2$ . When 0.1 mole of $XY_2$ weighs 10 g and 0.05 mole of $X_3Y_2$ weighs 9 g, the atomic weights of X and Y are

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