The student uses 25.0cm3 of 1.60mol/dm3 sodium hydroxide to prepare the crystals.
2naoh(aq) +h2so4+8h2o-> na2so4 10h2o

calculate the maximum mass of hydrated sodium sulfate crystals that can be formed

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).