Calculate AH® for the reaction C4H4(g) + 2H2(g) - C4H8(g), using the following data: AH'combustion for C4H4(g) = -2341 kJ/
mol
AH combustion for H2(g) = -286 kJ/mol AH combustion for C4H8(g) =
2755 kJ/mol

How many moles are in 123.0 grams of kclo4?

An unknown insoluble substance displaced the water shown. it's mass is indicated on the triple beam balance. mass = a. 694 b. 693.5 c. 693.0 d.693.8

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).