A gas that has volume st of 45°Cunknown pressure has its volume increased 44L and temperature decreased to 35 degrees * C measure the pressure after the change to be 2.0 atm, what was the original pressure of the gas

it is a good conductor

explanation:

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

"the periodic table is arranged in order of atomic number."

the answer is na (sodium)