In the summer of 2010 , platinum sold for $1500/oz. one ounce is equal to 28.5g . How many platinum atoms could you buy with a penny $0.01

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

How would you reduce the volume of gas

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