A 900.0 g sample of sea water is found to contain 3.5 x 10^-3 g Zn. Express this concentration in ppm.

passing a magnet thought the

mixture , because iron gets attracted to magnet .

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)

i believe the answer is three water molecules