Generalize the relationship between mass acceleration and net force

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

What is the percent by mass of oxygen in fe2o3