# A solution of sodium sulfate contins 92g of   ions per kilogram of water.The molality of ions in that solution in is:Option 1)12Option 2)4Option 3)8Option 4)16

Molality -

Molality (m) = (number of moles of solute)/(mass of solvent in kg)

- wherein

It is defined as the number of moles of solute present in 1 kg of solvent. It is denoted by m.

Molecular Formula -

The molecular formula shows the exact number of different types of atoms present in a molecule of a compound.

- wherein

For glucose, empirical formula is CH2O .its molar mass is 180 gram.

n = molar mass/empirical formula mass = 180/30=6

Hence molecular formula= C6H12O6

Mole Concept -

One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.

- wherein

one mole = 6.0221367 X 1023

as we know that no. of moles=

so, molality =

n= 4 mol/kg

Option 1)

12

Option 2)

4

Option 3)

8

Option 4)

16

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