Quantitative chem xx

What is a mole in chemistry?

A mole is a unit that measures the amount of substance, defined as containing exactly 6.022 x 10²³ particles (atoms, molecules, ions, etc.).

Define molar mass.

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

What does Avogadro's number represent?

Avogadro's number (6.022 x 10²³) represents the number of atoms, ions, or molecules in one mole of a substance.

What is a concentration in terms of solutions?

Concentration is the amount of solute present in a given volume of solution, often expressed in moles per liter (M).

Explain the concept of stoichiometry.

Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass.

What is a titration?

Titration is a laboratory method used to determine the concentration of a solute in a solution by reacting it with a standard solution.

Define percent yield.

Percent yield is the ratio of the actual yield of a product from a reaction to the theoretical yield, expressed as a percentage.

What is the significance of limiting reactants in a reaction?

The limiting reactant is the substance that is completely consumed first in a chemical reaction, limiting the amount of product formed.

What does the term 'empirical formula' mean?

The empirical formula represents the simplest whole-number ratio of the elements in a compound.

Explain what a solution is in chemistry.

A solution is a homogeneous mixture of two or more substances, consisting of a solute dissolved in a solvent.