A sample of CO2 gas fills a container with a volume of 44.5 L. When the volume is decreased to 13.8 L at a constant temperature, the pressure inside the container is 6.25 atm. What was the pressure inside the container originally? A) 0.035 atm
B) 0.51 atm
C) 1.94 atm
D) 3.84 atm
E) 6.25 atm

I know the answer is C but I need the work. Everytime I do it, I get confused. Thanks!

1 is the answer to this problem

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.