If a gas is cooled from 231.0 K to 315 K and the volume is kept constant what final pressure would result if the original pressure was 621 mm Hg?

How are elements arranged in a periodic table

Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?