Answer:
[tex]116.8\text{ g}[/tex]Explanation:
Here, we want to get the mass of the given number of moles
To get this, we can use the mathematical formula below:
[tex]mass\text{ = number of moles }\times\text{ molar mass}[/tex]The number of moles is 0.4 mol
The molar mass of SeCl6 is 292 g/mol
Thus, we have the mass as:
[tex]mass\text{ = 0.4 }\times\text{ 292 = 116.8 g}[/tex]