Aballoon contains 0.5 l of air at 101.5 kpa. you squeeze it to a volume of 0.25 l. what is the pressure of air inside the balloon? assume the temperature and amount of gas remain constant.
a.50.8 kpa
b.0.25 kpa
c.102 kpa
d.203 kpa

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).

a