Which term best describes the materials that make up rocks? a. sand left by erosion b. different kinds of crystals c. layers of minerals d. compressed magma

C. layers of minerals

The correct answer is
C) layers of minerals

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.

Hydrogen is the most abundant element on the periodic table..hope it .