Question

How many molecules of manganese are there in 1.75 moles? There are 6.02 x10^23 molecules/mol

Answer 1

Answer:
`1.0535 * 10^(24) \text{ molecules of manganese}`

The result is approximate.

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Work Shown:

`1.75 \text{ moles} * \frac{6.02 * 10^(23) \text{ molecules}}{1 \text{ mole}}\\\\(1.75 * 6.02) * 10^(23) \text{ molecules}\\\\(10.535) * 10^(23) \text{ molecules}\\\\(1.0535 * 10^1) * 10^(23) \text{ molecules}\\\\1.0535 * (10^1 * 10^(23)) \text{ molecules}\\\\1.0535 * 10^(1+23) \text{ molecules}\\\\1.0535 * 10^(24) \text{ molecules}\\\\`

Note: In the second step, the "mole" units cancel when dividing.