What is the number of electrons in the outermost energy level of an oxygen atom

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

37.0 °c = °f (human body normal temperature)

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.