Answer:
They differ by their atomic mass and have same proton number.
Explanation:
Isotopes are atoms of the same element with the same proton or atomic number but with different atomic masses.
<h2>0.2 atm </h2>
Explanation:
The new pressure can be found by using the formula for Boyle's law which is

Since we're finding the new pressure

We have

We have the final answer as
<h3>0.2 atm</h3>
Hope this helps you
exactly 1 molecule of water is H2O just 1 is the answer
The air surrounding the hot plate would heat up through the process of convection
It is sulfur, selenium, oxygen