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  • What is the molar mass of  ?Option: 1 137.3

What is the molar mass of CFC-11 ?

Option: 1

137.37 g/mol


Option: 2

187.15 g/mol


Option: 3

187.37 g/mol


Option: 4

137.15 g/mol


Answers (1)

best_answer

The molar mass of CFC-11 (trichlorofluoromethane) is calculated as follows:

Molar\ mass = (3 \times atomic\ mass\ of\ chlorine) + atomic\ mass\ of\ carbon + atomic\ mass\ of\ fluorine

= (3 \times 35.5) + 12.01 + 3 \times 18.99
= 106.5 + 12.01 + 56.97

= 175.48 g/mol

Adding the molar mass of one more fluorine atom, we get

Molar\ mass\ of\ CFC-11 = 175.48 + 18.99

= 187.15 g/mol

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Riya

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