What is the mass, in grams, of 0.250 mol K2CO3?

Once similarity and one difference between a mixture of elements and a mixture of compounds

8. what happens to matter during a chemical reaction

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car