An engine, such as the one in a car, converts the chemical energy in gasoline to mechanical energy when the engine moves. Not all of the energy in the gasoline is converted to the movement of the engine. Some energy is lost to sound and heat. Which of the following shows how the energy input and output of an engine demonstrate the law of conservation of energy?

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Select the correct answer from each drop-down menu. describe what happens to a carbon-11 atom when it undergoes positron emission. the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons