Acompound contains 75% carbon and 25%
hydrogen by mass. what is the empirical formula
for this compound?

CH4

Explanation:

Carbon: 75%/12grams = 6.25

6.25/6.25 = 1

Hyrdrogen: 25/1gram = 25

25/6.25 = 4

C1H4 = CH4

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 :

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.