The symbols found on the map below indicate where fossils have been found in the same layer of sediment. Each unique symbol represents fossil locations of a particular species.

What do the locations of the fossils suggest?
A.
The continents' locations have remained constant throughout time.
B.
Similar fossil types are never found on different continents.
C.
The continents were once connected to each other.
D.
Each continent has completely unique plant and animal life.

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 !

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.

a corroding iron, if that's one of your choices

answerleaving cheese out to get moldy;