Final answer:
In chemistry, mass and moles are converted using the substance's molar mass, while moles and particles are converted using Avogadro's number. Molar mass is the mass of one mole of a substance, and Avogadro's number is the count of particles in one mole.
Step-by-step explanation:
When discussing the relationship between mass, moles, and particles in chemistry, several mathematical expressions and conversions are used:
- Mass to moles: The mass of a substance (in grams) can be converted to moles by dividing by the molar mass of the substance.
- Moles to mass: To find the mass from moles, multiply the number of moles by the substance's molar mass.
- Moles to particles: The number of moles can be converted to the number of particles by multiplying by Avogadro's number (6.022 x 10^23 particles/mole).
- Particles to moles: To convert from particles to moles, divide the number of particles by Avogadro's number.
Definitions:
- a. The term for the mass of one mole of a substance is molar mass.
- b. The number of particles in one mole of a substance is represented by Avogadro's number.
These conversions are fundamental in performing calculations that involve chemical reactions and stoichiometry, as they allow chemists to relate the masses of reactants and products in a balanced chemical equation.