Moles and Gas Volume (3.4) Avogadro’s Hypothesis: equal volumes of different gases at the same temperature and pressure contain the same number of particles.

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Aim: How to convert from moles to volume and vice versa

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Presentation transcript:

Moles and Gas Volume (3.4) Avogadro’s Hypothesis: equal volumes of different gases at the same temperature and pressure contain the same number of particles. Molar Volume of a Gas (at STP): 22.4 L = 1 mol STP: Standard Temperature and Pressure Temperature = 0oC (or 273 K) Pressure = 1 atm (or 101.3 kPa) this relationship can be used for unit conversions between “moles” and “L” for any gas

What is the volume (in L) occupied by 0.350 mol of SO2 (g) at STP? How many moles are in 3.74 L of H2 (g) at STP? What is the mass of 3.45 L of O2 (g) at STP? How many atoms of oxygen are in 2.50 L of CO2 (g) at STP?