A certain element has four stable isotopes. The first has a mass of 50.01 amu and an abundance of 8.00%. The second has a mass of 48.98 amu and an abundance of 32.6%. The third has a mass of 52.99 amu and has an abundance of 38.3%. The final has a mass of 51.98 amu and an abundance of 21.1%. Calculate the average atomic mass of the element.

it's c. elements are placed in rows based on how may valencies electrons have.

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)

pv=nrt

explanation: