Hat mass of ethane, c2h6, contains the same number of molecules as 3.00 g of trichlorofluoromethane, ccl3f?

1. Calculate the molar masses of each compound:

2. Both masses are referred to one mole of the substances. We can do a ratio between them and the 3 g of :

The mass of is 0.654 g

Mole is a measure of the amount of substance. It is defined as the mass of a substance that has the same number of fundamental units as there are atoms in 12 g of carbon-12. Such fundamental units can be atoms, molecules or formula units.

Step1: Initially we have to calculate the moles of trichlorofluoromethane

The formula to calculate the moles of trichlorofluoromethane is as follows:

                                 …… (1)

The given mass of is 3 g.

The molar mass of is 137.34 g/mol.

Substitute these values in equation (1)

The number of moles of trichlorofluoromethane is equal to the number of moles of ethane and that is 0.02184 moles.

Step2: Calculate the mass of ethane from the moles of ethane .

The formula to calculate the moles of ethane is as follows:

                             …… (2)

The moles of is 0.02184 mol.

The molar mass of is 30 g/mol.

Substitute these values in equation (2)

(3)

Rearrange the equation (3) to calculate the mass of  

Hence, the mass of is 0.654 g.

Learn more:

1. Bond energy of H-H bond in the given reaction:

2. The main purpose of conducting experiments:

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Mole concept

Keywords: stoichiometry, C2H6, CCL3F, moles, mass, molar mass, 0.02184 mol., 30 g/mol, 3 g, 137.34 g/mol and 0.654 g.

what are the óptions. pléase list them