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Molecules and Atomicity

Atomic mass o...

Question

The atomic mass of Cl is 35.5 g. Calculate the mass of 4.50 moles of chlorine gas, Cl₂.

A

4.5 g

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B

319.5 g

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C

6.34 g

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D

160 g

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Solution

The correct option is A. 319.5 g
Atomic mass of $C l$ is 35.5 u.
Molecular mass of $C l_{2}$ is 71u
So, the Mass of 1 mole of Cl₂is 71 g.

Hence mass of 4.50 moles is 71 X 4.50 = 319.5 g

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Similar questions

Q. Calculate the molecular mass of the following.
A. Chlorine gad
B. Ammonia gas
C. Sulphur regicide gas
Atomic mass of cl=35.5u
N=14u
H=1u
S=32u
O=16u

Q. Calculate the number of molecules in

35.5 g

of chlorine gas.

Q. Calculate the atomic mass (average) of chlorine using the following data :

	% Natural Abundance	Molar Mass
$^{35} C l$	75.77	34.9689
$^{37} C l$	24.23	36.9659

Q. Chlorine has two stable isotopes: Cl-35 and Cl-37 with atomic masses 34.96 and 36.95, respectively. If the average mass of chlorine is 35.43, calculate the percentage abundance.

Q. The ratio of isotopes of

_{17}^{37} C l

_{17}^{35} C l

in natural chlorine is 1:3. Calculate the fractional atomic mass of chlorine.

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