Q13. For the reaction

Mn(s)+O2(g)→MnO2(s)

compute the theoretical yield of product (in moles) for each of the following initial amounts of reactants.

3 mol Mn and 3 mol O2
Express your answer using one significant figure.

4 mol Mn and 8 mol O2
Express your answer using one significant figure.

28.5 mol Mn and 43.2 mol O2
Express your answer using three significant figures.

(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