Answer:
0.255 moles
Explanation:
- The relationship between moles, mass and the molar mass of a compound is given by;
[tex]Moles=\frac{mass}{molarmas}[/tex]
- Molar mass of a compound is equivalent to the relative formula mass of a compound that is calculated by adding the atomic masses of atoms making the compound.
In our case.
We are given the compound PCl₃ whose;
Mass is 35 g
Molar mass is 137.33 g/mol
But; [tex]Moles=\frac{mass}{molarmas}[/tex]
Therefore;
[tex]Moles,PCl_{3}=\frac{35g}{137.33 g/mol}[/tex]
= 0.255 moles
Therefore, 35 g of PCl₃ contains 0.255 moles
