100 90
80
NaNO
70
K Cro
60
KNO,
Cache
Solubility (g of salt in 100 g H,0)
50
Pb(NO3)2
KCI
40
Naci
30
20
KCIO,
10
Ce (SOA
0
0
10 20 30 40 50 60 70 80 90 100
Temperature (°C)
A student dissolves 20g of KCIO3 in H2O at 80°C. The solution is:
saturated
supersaturated
cannot be determined
unsaturated

the maximum mass of nh3 is nh3 in grams

(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