SEP Use Models Mercury is a special metal because it is liquid at room temperature. It boils at 357°C and melts at -38°C. If you started with a solid piece
of mercury metal and added heat energy, would it follow a similar phase diagram
pattern to this one or be different? What safety precautions would you take if you
were doing this experiment?

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 !

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.