Standard enthalpies (H) of formation can be combined to obtain the standard enthalpy of any reaction
Select one:
a. All bond enthalpies are positive
b. Standard Enthalpies of Formation Summary
c. Heat and Work
d. Specific Enthalpy

the answer is either b or c

b) mutualism

hope this : )

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).

answerto predict;