the cost of table salt and table sugar is Rs 10 per kg and Rs40 per kg respectively calculate thier cost per mole.

The cost of table salt and table sugar is Rs 10 per kg and Rs 40 per kg respectively calculate theIr cost per mole.

Table Salt = NaCl 

Molar Mass of NaCl
= 23 + 35.5 g
= 58.5 g mol^-1

No. of moles in 1 kg
= 1000 g /58.5g
= 17.09  moles

Cost per mole
= Rs 10 / 17.09 mol
= Rs 0.585  per mole

Table Sugar = Sucrose
Molar mass of C₁₂H₂₂O₁₁
= 144 + 22 + 176
= 342 g/mol

No. of moles in 1 kg
= 1000 g/342 g/mol
= 2.92 moles

Cost per mole
= Rs 40 / 2.92 mol
= Rs 13.70 per mole