The measure of the amount of matter in a given volume of a certain substance is called______
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Mass of iron chloride (FeCl₂) : 22.68 g
<h3>Further explanation</h3>Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison
With this law, we can calculate how many grams an element is needed to make a compound with a certain mass, as desired
<h3 />The iron ions in 50 g mixture :