In a titration experiment, C2O42- reacts MnO4- with as represented by the equation above. The dark purple KMnO4 solution is added from a buret to an acidified colorless solution in an Erlenmeyer flask.
At some point in the experiment, the rate of appearance of Mn2+ ions was 1.0 x 10-4M/s. What was the rate of disappearance of C2O42-?

the answer to this question is 3.

gas

explanation:

smoke is the matter of a gas

(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