3. The test tube that contained the calcuim metal was probably the most difficult of the test tubes to clean. Why was aqueous HCl used to clean the tube

20 drops hope this

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?