The statue of liberty is made out of copper and was once shiny and copper-colored. over the years, the copper has gone through a process called oxidation, where it has changed into a new material. what has occurred?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

What is the single most important equation in all of physics?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.