It is an example of a physical change because the chocolate changes from a solid to a liquid however it’s chemical composition is not changed so it’s a physical change.
This can be solved according to Le C ha.tellors principle
- Any change in concentration, temperature, pressure can shift the equilibrium
So
Here to increase NO_2
We need to increase the temperature or increase the concentrations of reactants
e temperature of a 0.750 L gas sample at 25°C and 2.00 atm is changed to 250°C.
Thats a tuff one ummmmmm 4.5 m