What type of mixture produces the same properties for every sample of the mixture?

A. heterogeneous
B. homogeneous

The answer is B

In the word “homo” it means same and since the question keeps repeating same it should be homogeneous.

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.