How many grams of Na2S are needed to make 2 L of a
5M solution?

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

What does x represent in the formula for the compound xcl4?

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.