1. MOLAR VOLUME

5. molar volume What is the volume of a gas at STP, if it contains 10.4 moles? What is the volume of carbon dioxide gas (STP) if the mass is 400 grams? What is the mass of 500 liters of oxygen at STP?

6. H2 + O2  H2O How many liters of oxygen are required when making 180 grams of water. BCA table is required. O2 to H2O

7. ONE MORE EQUATION

8. Ideal Gas Equation Charles’ law: V  T  (at constant n and P) Avogadro’s law: V  n  (at constant P and T) Boyle’s law: V  (at constant n and T) 1 P V V  nT P V = constant x = R nT P P R is the gas constant PV = nRT

9. The conditions 0 0 C and 1 atm are called standard temperature and pressure (STP). PV = nRT R = PV nT = (1 atm)(22.414L) (1 mol)(273.15 K) R = 0.0821 L atm / (mol K) Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L. pressure must be in atmospheres (atm)

10. The conditions 0 0 C and 1 atm are called standard temperature and pressure (STP). PV = nRT R = PV nT = (760 mmHg)(22.4L) (1 mol)(273 K) Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L. pressure must be in: mm Hg

11. “R” value when using mm Hg atm when using atm

12. What is the volume (in liters) occupied by 49.8 g of HCl at STP? PV = nRT V = nRT P T = 0 0 C = 273 K P = 1 atm n = 49.8 g x 1 mol HCl 36.5 g HCl = 1.37 mol V = 1 atm 1.37 mol x 0.0821 x 273 K Latm molK V = 30.6 L

13. EXPANDING ON PV = nRT Determining the GRAMS of a gas (not at STP) when given the VOLUME Determining the VOLUME of a gas (not at STP) when given the GRAMS

14. REMEMBER we must think that grams (or particles “atoms” or molecules) are the same as MOLES

15. What is the number of grams of oxygen in the following? P = 1.5 atm V = 24.0 L T = 10oC n = ? R = 0.0821 L atm mol K n (# of moles) is the unknown. Then convert to grams

16. How many liters of carbon dioxide are in the following condition? P = 740 mm Hg T = 30oC 440 grams Convert grams to moles then use the IDEAL GAS LAW R = 0.0821 L atm mol K

17. Aluminum combines with oxygen to form Aluminum oxide. How many liters of oxygen are formed with 270 grams of aluminum at a pressure of 1 atm and a temperature of 10oC?

18. MOLAR VOLUME

22. molar volume What is the volume of a gas at STP, if it contains 10.4 moles? What is the volume of carbon dioxide gas (STP) if the mass is 400 grams? What is the mass of 500 liters of oxygen at STP?

23. H2 + O2  H2O How many liters of oxygen are required when making 180 grams of water. BCA table is required. O2 to H2O

24. ONE MORE EQUATION

25. Ideal Gas Equation Charles’ law: V  T  (at constant n and P) Avogadro’s law: V  n  (at constant P and T) Boyle’s law: V  (at constant n and T) 1 P V V  nT P V = constant x = R nT P P R is the gas constant

26. The conditions 0 0 C and 1 atm are called standard temperature and pressure (STP). PV = nRT R = PV nT = (1 atm)(22.414L) (1 mol)(273.15 K) R = 0.0821 L atm / (mol K) Experiments show that at STP, 1 mole of an ideal gas occupies 22.414 L. pressure must be in atmospheres (atm)

27. What is the volume (in liters) occupied by 49.8 g of HCl at STP? PV = nRT V = nRT P T = 0 0 C = 273 K P = 1 atm n = 49.8 g x 1 mol HCl 36.5 g HCl = 1.37 mol V = ____ atm _____ mol x 0.0821 x ____ K Latm molK V =________

28. What is the number of grams of oxygen in the following? P = 1.5 atm V = 24.0 L T = 10oC n = ? R = 0.0821 L atm mol K n (# of moles) is the unknown. Then convert to grams

29. How many liters of carbon dioxide are in the following condition? P = 740 mm Hg T = 30oC 440 grams Convert grams to moles then use the IDEAL GAS LAW R = 0.0821 L atm mol K