How many grams of magnesium metal will react completely with 6.3 liters of 4.5 m hcl? show all of the work needed to solve this problem.

mg (s) + 2 hcl (aq) yields mgcl2 (aq) + h2 (g)

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.