Somewhat, but it dissolves faster in warm water.
it doesnt easily dissolved on a cold water because of its temperature
This coffee is dissolved in water.
Dissolved in water containing coffee, not in coffee.
if dissolved in water, it can be called an impurity.
Instant coffee granules dissolve faster in hot water than in cold water.
Cold water can hold more dissolved gasses than hot water, though that does not necessarily mean anything about the amount of dissolved gas actually present in a given sample.
If you are looking for examples, here are some: salt water sugar water sodium hydroxide dissolved in water Kool-Aid coffee tea
yes
coffee
More particles can be dissolved in hot water then in cold.
in hot water
Cold water will help. Ice is better if you have it around.