There are 7.26 moles in 425.0 g of sodium chloride
HOW IS NUMBER OF MOLES CALCULATED?
- The number of moles contained in a substance is calculated by dividing the mass (g) of that substance by its molecular mass (g/mol). Mathematically, this means:
no. of moles = mass ÷ molar mass
- Molar mass of sodium chloride (NaCl) given in this question is calculated as follows:
23 + 35.5
= 58.5g/mol
- According to this question, there are 425.0g of sodium chloride, hence, the number of moles can be calculated thus:
no. of moles = 425g ÷ 58.5g/mol
no. of moles = 7.26moles
Therefore, there are are 7.26 moles in 425.0 g of sodium chloride.
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