321.1 g of strontium phosphite will contain 0.76 moles of strontium phosphite in the beaker.
Explanation:
It is known that 1 mole of any substance is equal to the molar mass of that substance. So for the case of strontium phosphite, the molar mass is found to be 420.8 g/mol.
This means 1 mole of Strontium phosphite will contain 420.8 g of strontium phosphite.
Then 1 g of strontium phosphite will have [tex]\frac{1}{420.8}[/tex] moles of strontium phosphite.
So, 321.1 g of strontium phosphite will contain [tex]\frac{321.1}{420.8}=0.76 moles[/tex]
Thus, 321.1 g of strontium phosphite will contain 0.76 moles of strontium phosphite in the beaker.
