There are 0.123 moles in 20.0 grams of FeCl3.
HOW TO CALCULATE NUMBER OF MOLES:
- The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass. That is;
- no. of moles = mass ÷ molar mass
- According to this question, there are 20 grams of FeCl3. The number of moles in FeCl3 can be calculated as follows:
- Molar mass of FeCl3 = 55 + 35.5(3)
- Molar mass of FeCl3 = 162.2g/mol
- no. of moles of FeCl3 = 20g ÷ 162.2g/mol
- no. of moles = 0.123moles
- Therefore, there are 0.123 moles in 20.0 grams of FeCl3.
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