E. a student loaded their mixture of acetylferrocene and diacetylferrocene onto a column using 5 ml of dichloromethane as the loading solvent. they used about 7 g of sio2 as the stationary phase. the student then eluted the column using petroleum ether. after collecting 8 fractions, the student analyzed them by tlc to find that all of the compounds came off in the first two fractions, with no separation. where did the student go wrong, and what should they do differently when they try the column

hi,

the capital city of australia is canberra.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

(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