Question 3.1.1: A sample of titanium contains 8.98 × 10^25 Ti atoms. What am......

General Chemistry [1096778]

A sample of titanium contains 8.98 × 10 $^{25}$ Ti atoms. What amount of Ti, in moles, does this represent?

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You are asked to calculate the amount (moles) of Ti in a given sample of the metal.
You are given the number of atoms of Ti in the sample.
Use the equality 1 mol = 6.022 × 10 $^{23}$ atoms to create a conversion factor that converts from units of atoms to units of moles.

$8.98\times 10^{25}\text{ Ti atoms}\times \frac{1\text{ mol Ti}}{6.022\times 10^{23}\text{ Ti atoms}}$ = 149 mole Ti

Is your answer reasonable? The sample contains more than Avogadro’s number of Ti atoms and therefore contains more than 1 mol of Ti atoms.

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