Question

How many litres of liquid CCI, (d = 1.5 gkc) must be measured out to contain
1 x 102 ccl, molecules?
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Answer 1

Answer:

Gram Molecular Weight of CCl4=154 g.

Density of CCl4= 1.5 g/ml

So volume of 1- mole of CCl4= 154/1.5 =102.67 ml.

So 6.022 x10^23 Molecules of CCl4 has a volume of = 0.10267 Litres.

1 x10^25 Molecules of CCl4 will have a volume of = 0.10267 x 10^25/(6.022 x 10^23) =1.705 Litres

=

Explanation:

1 mole of any substance contains 6.02*10^23 molecules.

So, 1 mole of CCl4 contains 6.02*10^23 molecules. 1 mole of CCl4 weighs (1*12)+(4*35.5) grams = 12+142 = 156 grams.

156 grams contains 6.02*10^23 molecules.

10^25 molecules are contained in

[(10^25)*156/(6.02*10^23)] = 2591.16 grams

Density of CCl4 is 1.5 g/cc.

Density = mass/volume

Volume = mass/density = 2591.16/1.5 = 1727.44ml = 1.727L