4 Select the correct answer.
Which statement best describes how chemical equations demonstrate conservation of mass?
OA.
The number of reactants is the same as the number of products,
OB.
The compounds are the same on each side of the reaction.
O C.
The number of atoms of each element is the same on each side of the equation.
hodation
OD.
The state of matter is the same on each side of the equation,

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 :

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )