The solubility of barium fluoride in water is 1.32 grams per liter. if a barium fluoride solution had a concentration of 1.32 grams per liter, it would be said to be:

it would be said that 1.32g of Barium Fluoride dissolves in 1dm3 of water.

Explanation:

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 !