5. The standard enthalpy change of three combustion reactions is given below in kJ. 2C2H6(g) + 702(g) → 4CO2(g) + 6H2O(1) AH =-3120 2H2(g) + O2(g) → 2H2O(1) AHO=-572 C2H4(g) + 302(g) → 2CO2(g) + 2H2O(1) AHO=-1411 Based on the above information, calculate the standard change in enthalpy, AHO, for the following reaction. C2H6(g) - C2H4(g) + H2(g)​

One of the few xenon compounds that form is cesium xenon heptafluoride (csxef7). how many moles of csxef7 can be produced from the reaction of 13.0 mol cesium fluoride with 12.5 mol xenon hexafluoride? csf(s) + xef6(s) csxef7(s)

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Which is true according to the law of conservation of energy