Astudent performed the fractional crystallization experiment described with the following results: initial mass of sample mixture: 4.958 g, mass of salicylic acid recovered, 0.586 g; mass of cuso4•5h2o recovered, 3.12 g. what percentage of the original sample was recovered?

74.75%

Explanation:

To calculate this, we simply add the mass of the salicylic acid and the mass of the copper sulphate.

The addition will yield the following.

Mass of salicylic acid recovered = 0.586g

Mass of copper sulphate recovered = 3.12g

The addition of both is = 0.586g + 3.12g = 3.706g

The percentage composition can be calculated by dividing this by the original mass of the mixture before crystallization and dividing by 100.

3.706/4.958 * 100 = 74.75%

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