Molar Volume Volume The amount of space that

Molar Volume

Volume • The amount of space that an object takes up • A solid’s or liquid’s volume is determined by the size and spacing of its particles • At a higher temperature, particles are moving faster, hitting each other and bouncing further apart • Volume is greater at higher temperatures

Molar… stuff Mass of a mole of substance is called: _______________ Volume of a mole of substance is called: _______________

Molar… stuff Mass of a mole of substance is called: Molar Mass Volume of a mole of substance is called: Molar Volume

Static vs. Dynamic • Avogadrao’s Number – Static Quantity • Molar Mass – Dynamic Quantity • Molar Volume – Static Quantity

Molar Gas Volume • Avogadro’s Hypothesis • Equal volumes of different gases, measured the same temperature and pressure, have equal numbers of particles. • Standard Temperature & Pressure (STP) • 0 o. C • 101. 3 k. Pa = 1 atm

Same… #. . . of… Particles…

Molar Gas Volume • The molar volume of any gas at STP is 22. 4 L • Conversion Factor: 1 mol = 22. 4 L @ STP

What is the volume of 1. 3 mol of NO 2 gas at STP?

Natural gas is used to heat many homes. It consists primarily of the gas methane, CH 4. What is the mass of 8. 9 L of CH 4 at STP?

Homework 1. Finish the remaining questions, show all work and all conversions 2. Collect the worksheet from the front of the room! 3. Work your way through the worksheet (Key online!)