I’m not exactly sure how to proportionally change kelvin to Fahrenheit

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.