How much of a 200.0 gram sample of 198Au is left over after 15.20 days if its half-life is 3.8 days? How many ½ Lives? Then answer the question.​

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 !

so what is the problem with your lab report and whats the subject of the lab report? i will you

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante