Question

Calculate the mass in grams of each of the following amounts: 1.002 mol of chromium 4.08 x 10-8 mol of neon

Answer 1

`Mass_(chromium)=52.1\ g`

`Mass_(neon)=8.23* 10^(-7)\ g`

Step-by-step explanation:

Calculation of the mass of chromium as:-

Moles = 1.002 moles

Molar mass of chromium = 51.9961 g/mol

The formula for the calculation of moles is shown below:

`moles = (Mass\ taken)/(Molar\ mass)`

Thus,

`1.002\ mol= (Mass)/(51.9961\ g/mol)`

`Mass_(chromium)=1.002* 51.9961\ g = 52.1\ g`

Calculation of the mass of neon as:-

Moles =
`4.08* 10^(-8)` moles

Molar mass of neon = 20.1797 g/mol

Thus,

`1.002\ mol= (Mass)/(20.1797\ g/mol)`

`Mass_(neon)=4.08* 10^(-8)* 20.1797\ g = 8.23* 10^(-7)\ g`