Question

A spoon of table salt, naci contains 12.5 gram of this salt .calculate the number of moles it contains

Answer 1

Explanation:

A table spoon of NaCl = 12.5 grams

We know that,

1 mol NaCl => 23 + 35.5 => 58.5 gm

But we have 12.5 gm

Let us say,

x mol NaCl ==> 12.5 gm

1 mol NaCl ==> 58.5 gm

By cross multiplying,

58.5 × x = 12.5 × 1

Therefore,

x = 12.5 / 58.5

x = 0.2136 Moles

Therefore, 12.5 gm of NaCl ==> 0.2136 moles

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