Acetylene, C2H2, burns completely in O2 to produce CO2 and H2O. 2 C2H2 + 5 O2 4 CO2 + 2 H2O If 8.30 mole of C2H2 are completely burned in excess oxygen, the number of moles of CO2 produced is A) 4.00 mol. B) 8.33 mol. C) 12.5 mol. D) 16.6 mol.

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Which of the following methods uses the decay of atomic particles in an object to find its exact age? a. fossil dating b. geologic dating c. radioactive dating d. relative dating

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