Chemistry 1302A/B Lecture Notes - Lecture 3: Molar Mass, Stoichiometry

• School: Western University
• Department: Chemistry
• Course: Chemistry 1302A/B
• Professor: Keith Griffiths

Document Summary

Weighted average depending o the ratio of the components. The numerical value of the average molar mass will be closest to the component which is present in the greatest quantity. Mm = (xa x mma) + (xb + mmb) + (xc x mmc) At constant temperature and pressure, the volume of a gas is proportional to the number of moles of gas. At constant temperature and volume, the pressure of the gas is proportional to the number of moles in a gas. Mass - volume : mass moles v = nrt. Write balanced reaction determine limiting reagent mole ratio. The size of the gas molecules is negligible compared to the spaces in between them. Molecules are considered to be point particles; they have only transitional; or kinetic energy. The molecules interact with one another and the walls of the container and only through elastic collisions (no energy lost during the collision)