Hello Everyone,

I chose combination 

Compound: CaO

Mass: 7 g

Volume: 14 L

1) % mass/volume concentration

Formula for % mass/volume concentration is given by

% mass/volume concentration = ( mass of solute in gram / volume of solution in mL) * 100

% mass/volume concentration = ( 7 / 14000) * 100

% mass/volume concentration = 0.05 %

2) Molarity 

Molar mass of solute = 56.0774 gram/mole

Number of mole of solute present in solution = mass of solute / molar mass of solute

=7 / 56.0774

= 0.1248

Molarity = Number of mole of solute / volume of solution in liter

Molarity = 0.1248 / 14

Molarity =0.0089 M

3) Osmolarity

Formula for Osmolarity is given by

Osmolarity = Molarity * g

where g = number of particle in solution ( for CaO g = 2) 

Osmolarity = 0.0089 * 2

Osmolarity = 0.0178 osM

Reference:
Bauer, R. C., Birk, J. P., & Marks, P. (2019). Introduction to chemistry. McGraw-Hill Education.

How can molarity and osmolarity be calculated from M/V?: Socratic. Socratic.org. (2014, May 19). https://socratic.org/questions/how-can-molarity-and-osmolarity-be-calculated-from-m-v#:~:text=Molarity%20is%20the%20number%20of,in%201.00%20L%20of%20solution.