In the chemical equation wA + xB ---> yC + zD, if one knows the mass of A and the molar masses of A, B, C, and D, one can determine

A) the mass of any of the reactants or products.

B) the mass of B only.

C) the total mass of A and B only.

D) the total mass of C and D only.

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)

explanation:

a