What is the molecular weight of chloroform if 0.0275 mol weighs 3.28 g?

Key Concepts

Molecular Weight

Molecular weight, or molar mass, is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic weights of all atoms in a molecule. For chloroform (CHCl3), the molecular weight can be determined by adding the atomic weights of carbon (C), hydrogen (H), and chlorine (Cl) in the formula.

Moles

A mole is a unit in chemistry that represents 6.022 x 10^23 entities, such as atoms or molecules. It allows chemists to count quantities of substances in a manageable way. The number of moles can be calculated using the formula: moles = mass (g) / molar mass (g/mol), which is essential for determining the molecular weight when given mass and moles.

Conversion between Mass and Moles

The conversion between mass and moles is a fundamental concept in stoichiometry. It involves using the relationship between the mass of a substance and its molar mass to find the number of moles. In the context of the question, knowing the mass of chloroform and the number of moles allows for the calculation of its molecular weight using the formula: molecular weight = mass / moles.