Answer:
(a) Total mass = 14.931 kg
(b) Weight % of platinum = 17.29 %
Explanation:
(a) We have given moles of platinum = 0.0633 moles
Molar mass of platinum = 195.084 unit
Now mass of platinum = number of moles × molar mass = 0.0633×195.084 = 12.3488 gram
We have given moles of nickle = 0.044
Molar mass of nickle = 58.6934 unit
So mass of nickle = 0.044×59.6394 =2.5825 gram
So total mass = 12.3488+2.5825 = [tex]14.931[/tex]
(b) Weight % of platinum = [tex]\frac{weight\ of\ platinum}{total\ weight}=\frac{2.5825}{14.93}=0.1729[/tex] = 17.29 %
