What is the number of moles of potassium chloride present in 148 g of kcl?

The number of moles of one substance given the amount in mass can be calculated by the use of the molar mass. This is the mass of a compound per 1 mol of the said substance. For, KCl the molar mass is 74.55 g / mol

148 g / 74.55 g/mol = 2 mol KCl

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