How to plot Charles law graph with this??? WITH SOLUTION PLEASE, ASAP

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

The element that has the greatest electronegativity is

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.