Calculate the standard cell potential (e∘) for the reaction x(s)+y+(aq)→x+(aq)+y(s) if k = 8.97×10−3. express your answer to three significant figures and include the appropriate units. view available hint(s)

The standard cell potential (E∘) for the reaction  is -0.121 V

Explanation:

The reaction is:

Relation between standard Gibbs free energy and equilibrium constant follows:

where,

= Standard Gibbs free energy = ?

R = Gas constant =

T = temperature = 298 K

K= equilibrium constant =

Putting values in above equation, we get:

To calculate standard Gibbs free energy, we use the equation:

Where,

n = number of electrons transferred = 1

F = Faradays constant = 96500 C

= standard cell potential = ?

Putting values in above equation, we get:

Thus standard cell potential (E∘) for the reaction  is -0.121 V

(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