A sample of nitrogen gas has a volume of 2250 mL when it's temperature is 298 K if the volume increased to 2.82 L without changing the pressure, what is the new temperature (in Kelvinj2
473 K
273 K
373 K
173 K

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

C. 1s22s22p63s23p43d104s24p5

Ithink is a because if say increased in electronegativity

Ibelieve it is b. proton.hope my answer has you : )