A solution containing 1.20 g of impure sodium hydroxide solution per Liter. In a titration, it requires 18.5 L of 0.500 mol/ L of sulfuric acid to neutralize 20.0 L of the impure alkaline solution completely. The chemical reaction is shown below. 2NaOH + H2SO4 Na2SO4 + 2H2O

Determine the concentration of NaOH in mol/L

(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

50.23 i believe is correct but don't quote me on that.