A sample of pure carbon dioxide gas has a mass of 110 g. How many moles of CO2 are in the sample?

Iknow #2 is d. i just need to know why

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon