Amount of substance

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Question 10

A mass spectrometer is used to analyse a gaseous sample of a chlorofluorocarbon (CFC) refrigerant. The mass of a single molecule of this CFC is determined to be 1.736 × 10^-22 g.

What is the molecular formula of this CFC?

(Use Avogadro's constant, $\times 10^{23}\text{ mol}^{-1}$ )

$CHF2Cl\text{CHF}_2\text{Cl}$

$CF2Cl2\text{CF}_2\text{Cl}_2$

$CF3Cl\text{CF}_3\text{Cl}$

$CFCl3\text{CFCl}_3$

Amount of substance Questions

A Level
Chemistry
Amount of substance

A Level
Chemistry OCR A
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