A water molecule is made up of one oxygen and two hydrogen atoms. Why is water considered a pure substance? - Water can be combined with other substances by physical means.
- Water molecules are made up of different types of atoms.
- Water can not be broken down by physical means.
- Each water molecule has an identical composition and properties.

let that person have a turn to speak : )

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

може ли да зареждате повече информация, моля

you gotta add the following molecules so we can give u an answer

explanation: