Answer:
Explanation:
The ideal gases follow Boyle's law: at constant temperature pressure and volume are inversely related:



Subsituting and computing:

Law of conservation of mass- The total mass after a chemical reaction is exactly the same as the mass before.
Not all units of measurement are equal, but the value of each unit is used for its intended purpose, so we have different units of measurement for each problem.
Answer:
11 molecules of CH4.
23 atoms of C is the leftover.
Explanation:
Hello!
In this case, for the formation of methane:

We can see there is an excess of carbon based on their stoichiometry, because the needed amount of hydrogen gas molecules would be:

Thus, the formed molecules of methane are computed below:

In such a way, the leftover of carbon atoms are:

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No more solute will dissolve at that temperature, the temperature would have to be increased in order for more solute to dissolve.