A 20 kg red car traveling at 20 m/s collides head on with a 25 kg blue car traveling at 10 m/s. The collision is inelastic. How does the TOTAL momentum BEFORE the collision
compare with the TOTAL momentum AFTER the collision? (Assume no friction or other
forces acting in the system). HINT: use equation #2

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

How many moles are in 43.9 l of oxygen

What is another way to determine mass times acceleration?