If you dissolve 5.00 kg of methanol (CH_4O) in 2.00 m^3 of water, how many molecules of methanol per liter of water do you have? (1 kg = 1000 g; 1 m^3 = 1000 L)

Given :

Mass of methanol ( ) , m = 5 kg = 5000 g .

Volume of water , .

To Find :

Molecules of methanol per liter of water .

Solution :

Moles of methanol , .

We know , 1 mole of a substance contains .

So , total number of molecules :

Number of molecules per liter :

Hence , this is the required solution .

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