Answer:
It should be silicon... I even googled it to see if I was correct and that’s what it says so can someone figure out why silicon is not an answer
Explanation:
The problem applies Charles' law since constant pressure with varying volume and temperature are given. Assuming ideal gas law, the equation to be used is

=

. We make sure the temperatures are expressed in Kelvin, hence the given added with 273. The volume 2 is equal to 25.2881 liters.
The answer is 10. Each capital letter is an atom. The tiny numbers represent how many atoms of that type
Has only 7 electrons so it want to bond with other elements so its very reactive and unstable. Hope this helps