Consider again the reaction for photosynthesis:
What mass of oxygen (O2) forms in a reaction that
forms 15.90 g C6H12062
6CO2 + 6H20
C6H12O6 + 602
(Molar mass of O2 = 32.00 g/mol; molar mass of
C6H1206 = 180.18 g/mol)
What mass of water is required to react
completely with 157.35 g CO2? (Molar mass of
H2O = 18.02 g/mol; molar mass of CO2

(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

g/mol

explanation: