Is co2 an empirical formula, a molecular formula, or both?

It is a molecular formula od carbon dioxide and can be empirical formula too.

So, it's a both of them

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.

ugh fiel iente of insistí is did kiwis jaj