What is the mass in grams of each of the following samples? (a) 0.0015 mol of sodium

Key Concepts

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For sodium (Na), the molar mass is approximately 22.99 g/mol. This value is essential for converting between moles and grams, allowing us to determine the mass of a given number of moles of a substance.

Conversion from Moles to Grams

To find the mass of a substance in grams from its amount in moles, the formula used is: mass (g) = moles × molar mass (g/mol). This straightforward calculation is fundamental in stoichiometry, enabling chemists to relate the amount of a substance to its mass in practical applications.

Stoichiometry

Stoichiometry is the area of chemistry that deals with the quantitative relationships between the reactants and products in a chemical reaction. It involves using balanced chemical equations to calculate the amounts of substances involved, which is crucial for solving problems related to mass and moles in chemical reactions.