Answer:

Explanation:
We can use Dalton's Law of Partial Pressures:
Each gas in a mixture of gases equals its pressure independently of the other gases

Answer:
<em>A law provides an explanation, while a theory simply describes observations. A law is supported by data, while a theory is merely a guess.</em>
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When the temperature rises some materials experience thermal expansion which means they get bigger, so it may make them harder to close because they don't fit as well.
Yes it can cause chemical change