How many milliliters of a 0.45 M BaCl₂ solution contain 15.0 g of BaCl₂?

Key Concepts

Molarity (M)

Molarity is a measure of concentration defined as the number of moles of solute per liter of solution. It is expressed in moles per liter (mol/L). Understanding molarity is essential for converting between mass of a solute and volume of a solution, as it allows us to relate the amount of substance to its concentration in a given volume.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For BaCl2, the molar mass can be calculated by summing the atomic masses of barium (Ba) and chlorine (Cl). This concept is crucial for converting grams of a compound to moles, which is necessary for using the molarity in calculations.

Stoichiometry

Stoichiometry involves the calculation of reactants and products in chemical reactions based on the conservation of mass. It allows us to use the relationships between moles, mass, and volume to solve problems involving solutions. In this context, stoichiometry helps determine how much volume of a solution is needed to contain a specific mass of solute.