Nomenclature of Some Special Cations. I. Cations that do not require Roman numerals: Previously you had learned that elements in Groups IA and IIA, and aluminum form cations of a. fixed charge. You are now going to add on to this list, a few more ions in the transition metals that. also do not require a fixed charge because they generally form only ions with charges as shown. below:
Take an example, if a recipe calls for 350 grams of plain flour, then you refer to a conversion table saying it's about 2.5 cups.
Knowing the answer can also help you more easily scale recipes up or down. If you do a Google search, you may find yourself on the Instructables page that says that a cup of all-purpose flour weighs 120 grams. Allrecipes says one cup of flour is 128 grams. Joy of Baking weighs in, calling one cup of flour 130 grams.