HELP QUICK Three fake elements have the following molar masses...
A = 128.9 g/mol
B = 41.4 g/mol
C = 12.6 g/mol
What is the molar mass of the compound A2BC4? Enter your answer to one decimal place.

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

you gotta add the following molecules so we can give u an answer

explanation: