Can anyone help me with these two questions?

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.

True, the standard unit for volume is liters which can be represented by either a lower case "l" or a capital "l"