Two atoms with the same number of protons but a different number of neutrons are (2 points) 1. ions of the same element. 2. in the same column of the periodic table. 3. next to each other on the periodic table. 4. isotopes of the same element.

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