We will begin by observing in a quantitative way decomposition of baking soda (NaHCO3). When NaHCO3 is heated, it decomposes to Na2CO3, CO2 and H2O. In this experiment, we will decompose a known amount of NaHCO3 and measure the mass of the Na2CO3 produced (actual yield). We will then compare this to the theoretical value using the percent yield calculation.

asking the goog might u get an answer

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 !

1 a

2 d

3 a

4 c

explanation: