What is the Celsius temperature of 100.0 g of chlorine gas in a 45.0-L container at 800 mm Hg?
410°C
-68°C
136°C
205°C

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.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

diaria maybe go see a doctor about that