What is the old volume at a temperature of 22oC of hydrogen gas when the new volume is 6.4 L at a temperature of -3.0oC?

c8h10 is your answerr

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.