The concentration of two reactants is decreased by the same amount. How will this change in concentration affect the reaction?
A. The reaction rate will increase by the same amount the concentrations were increased
B. The change in concentration will affect the rate of the reaction according to the rate law
C. The change in the reaction rate depends on the balanced chemical equation
D. The reaction rate will decrease by the same amount the concentrations were decreased

0

explanation:

488479

rvmoo+478)9.68

(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