Concept explainers
(a)
Interpretation:
The density of the methane and nitrogen needs to be determined.
Concept introduction:
The ideal-gas equation (also called as ideal-gas law) gives a decent estimate of numerous gases under certain conditions. The ideal-gas law is displayed below:
Here,
(b)
Interpretation:
The volume of the nitrogen required to displace all the methane from the tank should be calculated.
Concept introduction:
Density is defined as the ratio of Mass of a substance to its volume. A high-density liquid can displace a low-density liquid in a container as the high-density liquid moves down upon mixing it with a low-density liquidand the low-density liquid will move to the top and in this way high density liquid displaces the low-density liquid.
(c)
Interpretation:
The volume of the air needs to increase the oxygen concentration by 20% should be calculated.
Concept introduction:
In general, air consists of 79 mole% Nitrogen and 21 mole% Oxygen.
(d)
Interpretation:
The reason behind using nitrogen for purging instead of air should be explained.
Concept introduction:
Purging is the method of removing moisture content within the equipment to produce dry environment. Mostly the nitrogen is used for the purpose of purging and blanketing.
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Chapter 10 Solutions
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