What is an isolated system? O
A. A system that allows energy and mass to move in and out of it
B. A system that allows mass to move in and out but not energy
Ο Ο
C. A system that does not allow energy or mass to move in or out of
it
O D. A system that allows energy to move in and out but not mass

Which statement best describes the flow of energy in this scenario

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

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?