Question

A sample of phosphorus trichloride `(PCl_(3))` contains 1.4 moles of the substances. How many atoms are there in the sample?
A. `4`
B. `5.6`
C. `8.431xx10^(23)`
D. `3.373xx10^(24)`

Answer 1

Correct Answer - D
1 mole of `PCl_(3)` contains 4 moles (1+3) of atoms
`:.` 1.4 moles of `PCl_(5)` contains 5.6 moles of atoms
`:.` No. of atoms `= 5.6xx6.02xx10^(23)`
`= 3.372xx10^(24)`