15: Using the phase diagram, identify the phase that water is in for the following conditions: 0.4kPa and -10C

21: Reference this image and identify whether the following solution is saturated, supersaturated, or undersaturated: Ce₂(SO₄)₃

at a solubility of 2 at 80C

18; Calculate the reaction entropy (Srxn) for the following reaction: 2 LiOH + CO₂ Li₂CO₃ + H₂O

A= -113.4 J/mol K B= 200.6 J/mol K C= 364 J/mol K D= 313.8 J/mol K

24; Consider an exothermic reaction. How does the following action affect an equilibrium reaction by driving the reaction? Decreasing the temperature of the system

A: Forward Reaction B: Reverse Reaction

25: Consider the endothermic reaction N2(g) + 3H2(g) 2NH3(g). How does the following action affect an equilibrium reaction by driving the reaction? The decreasing volume of the system, while increasing the pressure

A: Forward Reaction B: Reverse Reaction

please answer all Thanks.