What is the difference between the chemical formula and structural formula?i’m working on the modeling molecules project for ca, if anyone can me out with some tips, or anything.. everything is appreciated. it’s a huge grade. !

1) chemical formula (molecular formula) shows the total number and kinds of atoms in a molecule, but not their structural arrangement.

For example C₄H₂N₂O₄, molecular formula shows that compound has four carbon, two hydrogen, two nitrogen and four oxygen atoms.

2) The structural formula is a graphic representation of the molecular structure, it shows arrangement of the atoms and the covalent bonds between them.

For example, structural formula for hydrochloric acid is H-Cl.

c is the answer because when something is left after something evaporates that shows the chemical change.

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 :