GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many moles are there in 2.00 x 10^19 molecules of CCl4?
A
3.32 x 10^-5 moles
B
5.64 x 10^-6 moles
C
1.20x10^43 moles
D
2.42x10^21 moles
Explanation: 

Detailed explanation-1: -Answer and Explanation: There are 3.39 moles are 2.04×1024 2.04 × 10 24 molecules of H2O H 2 O .

Detailed explanation-2: -I mole of CCl4 contains 6.022 x 10^23 (Avogadro number/constant) molecules.

Detailed explanation-3: -Moles in (3.52 X 10^24) molecules of water. 3.52 x 10^24 molecules x ‘1mol/6.02 x 10^23 molecules = 5.85 moles of H2O.

Detailed explanation-4: -Therefore, 4.63 x 1024 molecules of CCla weigh 49.2 g.

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