When 1.06 g of liquid PC13 at 11.8 C is added to a solution of water at in a coffee cup calorimeter, the temperature of the solution increases to 38.1C. If the heat
capacity of the solution and calorimeter is 421.7 J/C, calculate the molar heat of the
PC13. Answer to 0 decimal places in kJ/mol.

One or more substances changing into one or more substances is an example of a

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

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.