Question

mass
11) How many moles are there in 2.00 x 1019molecules of CCI4?
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Answer 1

CONCEPT :- In 1 mole of a molecule , there are total 6.022 × 10^23 molecules.

Hence, no. of moles =  No. of molecules/6.022x10^23

Steps :-

Given, no. of molecules = 2 × 10^19.

Hence, number of molecules as per formula = 2x10^19/6.022x10^23 = 0.33x10^-4

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Answer 2

ANSWER

3.3÷10⁵moles ofCCl4

EXPLANATION

1mole=6.022×10²³

So, How many moles will be of 2.00×10¹⁹molecules=?

By using cross multipication method we will get,

2×10¹⁹÷6.022×10²³

=0.33÷10⁴

=3.3÷10⁵moles ofCCl4