If today is October 12th and we view a first quarter, on what date will we observe the next third quarter? i need help asap i will give 15 points

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

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.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12