Borek said:0.163 M looks OK to me, 0.0544 is three times too low (which suggests an obvious mistake).
Solubility is the ability of a substance, known as the solute, to dissolve in another substance, known as the solvent, to form a homogeneous mixture.
Solubility is typically measured in terms of the amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure. The most common unit of measurement is grams of solute per 100 milliliters of solvent (g/100mL).
The solubility of a substance can be affected by several factors, including temperature, pressure, and the nature of the solute and solvent. Generally, as temperature increases, solubility also increases. Pressure has a more significant effect on the solubility of gases than liquids. Additionally, the polarity and molecular structure of the solute and solvent can play a role in solubility.
Concentration refers to the amount of solute present in a given amount of solvent. It can be measured in various units, such as molarity (moles of solute per liter of solution), molality (moles of solute per kilogram of solvent), or percent concentration (% w/w or % w/v).
Concentration and solubility are closely related, with solubility affecting the maximum concentration of a solution. For example, if a solute has a low solubility, it will only dissolve in a small amount of solvent, resulting in a low concentration. On the other hand, a highly soluble solute can form a concentrated solution with a larger amount of solvent. However, other factors, such as temperature and pressure, can also influence the concentration of a solution.