Question

actual molecular mass of chlorine

Answer 1

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Here's the answer you are looking for


One atom of Chlorine weighs 35.453amu
One molecule of chlorine has formula Cl2.
So molecular mass of chlorine is (2×35.453)amu=70.906amu

1 amu = 1.66 × 10^(-24)g

So, 70.906 amu = 70.906g × 1.66 × 10^(-24) g

= 117.7 × 10^(-24) g

= 1.177 × 10^(-22)g

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➡️ Alternative way:

1 mole of Cl2 = 6.023 × 10²³ molecules

1 molecule = 1/(6.023 × 10²³) moles = 1.66 × 10^(-24) moles.

1 mole of Cl2 = 2 × 35.453 = 70.906g

So, 1.66 × 10^(-24) moles of Cl2
= 70.906g × 1.66 × 10^(-24) g

= 117.7 × 10^(-24) g

= 1.177 × 10^(-22)g




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Answer 2

 molecular mass of chlorine is 70.906amu.