Cytochrome c is an iron-containing enzyme found in the cells of all aerobic organisms. If cytochrome c is 0.43% Fe by mass, what is its minimum 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. Understanding molecular weight is essential for stoichiometric calculations and determining the composition of compounds.

Mass percent composition refers to the percentage by mass of each element in a compound. It is calculated by dividing the mass of the element in one mole of the compound by the total mass of the compound, then multiplying by 100. This concept is crucial for determining the amount of a specific element in a compound, such as the iron content in cytochrome c.

Stoichiometry is the branch of chemistry that deals with the relationships between the quantities of reactants and products in chemical reactions. It allows chemists to predict the amounts of substances consumed and produced in a reaction. In this context, stoichiometry helps in calculating the minimum molecular weight of cytochrome c based on its mass percent of iron.