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According to "Newton's First Law" an object at rest will begin to move when it is acted upon an unbalanced force.
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I believe it’s because they are trying to find other things that won’t pollute the environment as much, and they are also doing this because we are trying to reduce green house gas. Sorry if i’m wrong :(
Answer:
calcium chloride deihydrate
If the states of matter have changed such as from solid to liquid, you have to remove or add energy.