3 A solution of ethanedioic acid was prepared by dissolving 1.01 g of the acid in
water and making the volume up to 250 cm in a volumetric flask. A 25.0 cm
sample of this solution was titrated against NaOH and required 18.40 cm NaOH
for neutralisation.
(COOH)2 + 2NaOH —— (COONa)2 + 2H2O
Calculate the number of moles of ethanedioic acid in 1.01 g.
a

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).

the answer is c. nacl

1 is the answer to this problem