Answer:
13 elements
Explanation:
those 13 elements involve Xenon,Radon,Chlorine,Hydrogen,Helium,Nitrogen,Krypton,Neon,Fluorine,Oxygen,Argon.Most of them are non-metals.
Complete Question
Questions Diagram is attached below
Answer:
* 
* 
* 
Explanation:
From the question we are told that:
Temperature 
Pressure 
Volume
Generally the equation for gas Constant is mathematically given by



Therefore
Work-done



Generally the equation for internal energy is mathematically given by


Therefore



Answer:
B.Convection
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
The answer is " a planet "