If there are 10.0 liters of a gas in a balloon and the balloon expands to occupy a volume of 28.0 Liters with a 4.00 atm reduction in pressure, what was the initial pressure?
O 1.43 atm
O 11.2 atm

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