If one ball with a momentum of 50 kg·m/s hits a ball at rest and no other forces are acting on either ball, what's the total momentum of both balls after the collision?
a. 0 kg·m/s
b. 25 kg·m/s
c. 100 kg·m/s
d. 50 kg·m/s

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory