The production of methyl bromide is an irreversible liquid-phase reaction that follows an elementary rate law. the reaction cnbr (a) + ch3nh2 (b) à ch3br (c) + ncnh2 (d) is carried out isothermally in a semi-batch reactor. a solution of methylamine (b) in extra dry ethanol at a concentration of 0.025 mol/l is to be fed at a rate of 0.05 l/s to an solution of bromine cyanide (a) in extra dry ethanol contained in a glass-lined reactor. the initial volume of fluid in the reactor is to be 5 l with a bromine cyanide concentration of 0.05 mol/l. the specific reaction rate constant is

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(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