Which of the following formulae is correct for calculating the number of moles?
- AMole $= \frac{\text{Molecular mass}}{\text{Weight}}$
- BMole $= \frac{\text{Weight}}{\text{Molecular mass}}$
- CMole $= \frac{\text{Weight}}{\text{Litre}}$
- DMole $= \frac{\text{Molecular mass}}{\text{Litre}}$
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