Which of the following is not a good way to reduce pollutants in paint shops? a) use extra topcoat color to get better coverage b) use a tintable primer. c) use a distillation machine or still d) use a paint gun clean up or wash machine 82 points

A) Use extra topcoat color to get better coverage is not a good way to reduce pollutants in paint shops, because the smell of paint is also a pollutant, plus the wording doesn't make sense. Besides, washing everything can help get pollutants out,  and only one layer of paint cuts back on the polution from the smells.

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 !

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.