What is the approximate hydronium ion concentration and hydroxide ion concentration in a cup of tea? Which is higher?

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.