HELP A MENTALLY DRAINED CHEM STUDENT PLEASEEE A cylinder contains a nmixture of gases under constant atmosphcric pressure. The gases undergo a chemical rcaction. Upon reacting, the gases absorb 877 J of heat from the surroundings and the surroundings do 0.248 U of P work on the gases. What is the value of ∆H in joules for this process?
∆H= ? J

what is the value of ∆E in joules for this process?

a

answer///carbon;

(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