The student is now told that the four solids, in no particular order, are calcium bromide (cabr2), sugar (c6h12o6), benzoic acid (c6h5cooh), and potassium bromide (kbr). assuming that conductivity is correlated to the number of ions in solution, rank the four substances based on how well a 0.20 m solution in water will conduct electricity.

list from most conductivity to lease conductivity in order (the ones i am typing out are in a random order):

calcium bromide
sugar
potassium bromide
benzoic acid

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 !

yes

explanation:

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