The cost of table salt (NaCl) is Rs 8 per kg. Calculate its cost per mole.

Solution

Molar mass of table salt (NaCl)
= 23 + 35.5 = 58.5 g mol^-1

because space space 1000 space straight g space table space salt space costs space equals space space Rs space 2 therefore space space space 58.5 space straight g space table space salt space would space cost space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 8 over 1000 cross times 58.5 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space Rs space 0.468 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 47 space paise space nearly. space space space space

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