Answer:
Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meager amounts.
<span>(3) Atomic masses are a weighted average of the naturally occurring isotopes.
</span>
Here, we found this answer my looking at the key words 'naturally occurring isotopes'
An isotope is a different amount of neutrons, making the atomic mass change.
Answer:
0.6L
Explanation:
The formula of molarity is molSolute/litreSolution
.