Identify whether each process is: A. spontaneous or B. non-spontaneous. (6 points)

1. A ball rolls up a hill.
2. Silverwares tarnish when exposed in air.
3. A cell phone battery is being recharged.
4. A fruit rot after several days
5. Throwing 50 coins results in all tails.
6. Ice is formed from ambient temperature

The combustion of hydrazine is has         and        

Is this process

A. Spontaneous at all temperatures

B. Spontaneous at low temperatures but not spontaneous at high temperature

C. Not spontaneous at low temperatures but spontaneous at high temperature

D. Not spontaneous at any temperature

For the formation of carbon dioxide from graphite and oxygen gas

C(s)+O2(g)→CO2(g)

ΔrH°=-393.51 kJ mol-1 and ΔrS°=+3.07 J mol-1 K-1.

Is this process

Spontaneous at all temperatures

Spontaneous at low temperatures but not spontaneous at high temperatures

Not spontaneous at low temperatures but spontaneous at high temperatures

Not spontaneous at any temperature

The combustion of hydrazine N2H4(l) +O2(g) =N2(g) +2H2O(g)