The shaded regions X and Y indicate changes in the energy level of the system. Which of the following correctly identifies these shaded areas? * 2 points Captionless Image Region X = energy released by the system at the start, Region Y = energy released by the system at the end Region X = energy difference between reactants and products, Region Y = sum of energy of reactants and products Region X = energy required to initiate the reaction, Region Y = energy released by the reaction Region X = energy gained by the surroundings of the system, Region Y = energy lost by the surroundings of the system

answer; talc and gypsum;

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

it is the most commonly accepted one

your answer is c) plasma

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