Question

Calculate the number of moles of C atoms in 11.0 g of carbon dioxide.

Answer 1

To find the number of moles of carbon atoms in 11.0 g of carbon dioxide, divide the mass of carbon dioxide by its molar mass. The result is the number of moles of carbon atoms in the sample.

Step-by-step explanation:

To calculate the number of moles of C atoms in 11.0 g of carbon dioxide, we need to use the molar mass of carbon dioxide and the molar mass of carbon. The molar mass of CO₂ is 44.009 g/mol, and since one mole of CO₂ contains one mole of C atoms, we can use the molar mass of carbon (12.011 g/mol) to find the number of moles of C.

First, convert 11.0 g of CO₂ to moles by dividing by the molar mass of CO₂:

11.0 g CO₂ * (1 mol CO₂ / 44.009 g CO₂) = 0.2497 mol CO₂

Since one mole of CO₂ contains one mole of C, the number of moles of C atoms is also 0.2497 mol.

Answer 2

11g CO2 means 0.25mol CO2

No. of mol = (11/44)=0.25mol [molecular mass of CO2 is 44g/mol]

In 1 mole CO2———6.023×10^23 no. of CO2 molecules

In 0.25 mol———- (0.25×6.023×10^23) = 1.5057×10^23 number of CO2 molecules are present.

Step-by-step explanation: