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State Henry's law of solubility of gases in liquid. Why of we see effervescence when a cold drink bottle is opened?

According to Henry's law, the solubility of a gas in a given volume of liquid increases with increases in :

Why liquid ammonia bottle is cooled before opening the seal ?

Why do gases always tend to be less soluble in liquids as the temperature is raised?

Trichloromethane or chloroform is a colourless oily liquid with a peculiar smell. It is sparingly soluble in water. The vapour when enhaled cause unconsciousness and therefore, it is used as an anaesthetic. Answer the following question : Why is the use of chloroform as an anaesthetic has been reduced?

Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side nd llow it to oscillate. Why does the bob eventually come to rest? What happens to its energy eventually? Is it a voiltion of the law of conservation of energy?

When you touch a metal object like a door handle on a dry winter day, you are likely to see a spark and feel a definite shock. We usually explain this by saying that we have built up a static charge. Why does this not happen on a hmid day in the summer?

According to the third law of motion when we push on an object, the object pushes back on us with an equal and opposite force. If the object is a massive truck parked along the roadside, it will probably not move. A student justifies this by answering that the two opposite and equal forces cancel each other. Comment on this logic and explain why the truck does not move.