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Stratospheric Pollution

How much

Question

How much % of the atmosphere's mass is contained in the troposphere?

A

20

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B

80

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C

50

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D

60

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Solution

The correct option is C 80
The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.

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The reaction of Copper with Sulphur
Mass of $C u$ before reaction:	$3.17 g$
Mass of $S$ before reaction:	$2.93 g$
Mass of $C u S$ formed:	$4.78 g$
Mass of unreacted $S$ :	?

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