Question

Calculate the mass of 10 moles of carbon dioxide

Answer 1

mass of 1 mole is =  12 + 16 *2 = 44g
mass of 10 mole of co2= 10 X 44= 440g

Answer 2

Given:

The number of moles of carbon dioxide = 10

To Find:

The mass of the sample

Solution:

The mass of 10 moles of carbon dioxide is 440g.

One mole is the exact amount of the substance that contains 6.022 X 10²³ atoms/molecules/ions.

The number of moles of a given substance = Mass of the given substance /  Molar mass of the substance

The molar mass of CO₂ = Molar mass of C + 2 (Molar mass of O)

= 12 + 2 X 16

= 12 + 32

= 44g

So 1 mole of carbon dioxide has 44g mass.

Thus using the unitary method we can conclude that 10 moles will have

44 X 10 g

= 440g