What is the ph of a 0.17 m solution of methylammonium nitrate (ch3nh3no3)? kb for methylamine (ch3nh2) is 5.0 × 10−4 . 1. 7.00 2. 5.86 3. 5.73 4. 2.04 5. 12.0 6. 5.58 7. 6.35 8. 5.49?

your answers are a,b,,e and f

i hope this

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied