At room temperature , 1 mL of water has a mass of 1 gram . What is the percent by mass of a 428 mL magnesium citrate ( solution containing 0.1 mol of magnesium citrate ?

5.0% by mass

Explanation:

Percent by mass is 100 times the ratio between the mass of solute (Magnesium citrate) in the mass of solution.

Mass of Magnesium citrate -Molar mass: 214.41g/mol-:

0.1mol * (214.41g/mol) = 21.441g

Assuming the volume of the solution is just due the solvent -Water-, the mass of water is 428g.

Percent by mass is:

21.441g / 428g * 100 =

the answer is 303.15 or 303

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).