Answer:
b, c,d
Explanation:
b. There are gas molecules that move faster than the average.
c. All the gas molecules in a sample cannot have the same kinetic energy.
d. The average kinetic energy of gas molecules increase with increasing temperature.
Correct answer is <span>C. They have a full shell of valence electrons. </span>
The law of conservation of mass<span> states that </span>mass<span> in an isolated system is neither created nor destroyed by chemical reactions or physical transformations.
</span>
A calcium atom has 20 protons!
There you go! I really hope this helped, if there’s anything just let me know! ☻