Asampling of 30 million particles coming from an exhaust vent contained 60 sulfur dioxide molecules. what is another way of expressing this concentration of sulfur dioxide using this information?

I answered this on an old account copy from the photo and enjoy :')

i had this on my unit activity, i can you if you are a plato student. are you a plato student?

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !