The energy of the universe is constant. That what mentioned by the first law of thermodynamics. Does this mean that AE is always equal to zero? Select one: O a. No, AE never equals zero because work is always being done on the system or by the system. O b. No, AE does not always equal zero because it refers to the system's internal energy, which is affected by heat and work O c. Yes, AE = 0 at all times, which is why q = -W O d. No, AE never equals zero because energy is always flowing between the system and surroundings. O e. No, AE does not always equal zero, but this is only due to factors like friction and heat. You have two containers A and B of pure water. The temperature of water in container A and B are 9C and 55C. If you mix 60.0 mL of water from container A to the 100 mL of container B, then what is the final temperature of the mixture? Select one: an O a. 397K b. 305K O c. 610K O d. 311K O e. 397K 2V - (1/2)W+X DH; = 10 kJ/mol (3/2)W + 4X -- 2V + x + 3Y DH2 = -30 kJ/mol Z + 4V - X DH3 = 20 kJ/mol tion Calculate DH for: X-Z + 3Y Select one: O a.-20 kJ/mol Ob. 20 kJ/mol 10 kJ/mol O d.-10 kJ/mol O e. 0 kJ/mol Consider the following diagram and identify "a and "b" respectively M Select one: O a. (a) is frequency and (b) is amplitude O b. (a) is amplitude and (b) is wavelength O c. None of the given options O d. (a) is amplitude and (b) is frequency O e. (a) is wavelength and (b) is frequency