Question

A component is composed of 0.0633 moles of platinum and 0.044 moles of nickel. Determine (a) total mass of the component (b) weight % of platinum.

Answer 1

(a) Total mass = 14.931 kg

(b) Weight % of platinum = 17.29 %

Step-by-step 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 =
`14.931`

(b) Weight % of platinum =
`(weight\ of\ platinum)/(total\ weight)=(2.5825)/(14.93)=0.1729` = 17.29 %