Homework 1. How many molecules are in 6 moles of CO2?
2. How many moles are in 1.5 x 1024 Carbon atoms?
3. How many grams are in 4 moles of N2?
4. How many moles are in 4.04 g of H2?
Homework5. How many grams are in 5.02 x 1023 CH2O molecules?
6. How many molecules are present in 453.6 g of NH4NO3 (ammonium nitrate)?
When talking about liquids and solids, the amount of space that one mole of something occupies can change
When talking about gases, the amount of space that one mole occupies will always be the same. (Avogadro’s Hypothesis)
•The volume that the gas occupies will change greatly depending on the heat and pressure
•Need to keep heat and pressure constant for Avogadro’s hypothesis to work•STP: Standard Temperature and Pressure = 0oC and 1 atmosphere (atm)
•At STP, any gas will occupy 22.4L
Practice!1. How many moles are in 11.2L of SO2 at STP?
2. How many Liters would 4 moles of N2 take up if it were at STP?
3. How many molecules are in 134.4L of CO?
4. How many grams would 2352L of O2 weigh?