Explanation:
2NaN3 => 2Na + N2
There are 6 nitrogen atoms on the left side but only 2 nitrogen atoms on the right side.
The equation would be balanced if there was a "3" infront of N2.
It is the inverse relationship of Pressure and Volume of Boyle's Law that creates the pump - vacuum activity that allows for us to breathe.
Answer:
. A closed system allows only energy transfer but no transfer of mass. Example: a cup of coffee with a lid on it, or a simple water bottle. ... In reality, a perfectly isolated system does not exist, for instance hot water in a thermos flask cannot remain hot forever.
It’s B. Substitution hope this helps
