Grade 8 science does anyone know the correct answer to this science question? if you do work on an object, how will its energy change? its energy will increase. its energy will decrease. its energy remains the same.

What volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml

Δu of , in kj/kg, as it isto k, (a)as a of , (b) at , (c) at .

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.