Leader: Kia Course: CHEM 177 Supplemental Instruction Instructor: Iowa University Date: ACS Question The combustion reaction of C3H8O with O2 is represented by this balanced chemical equation. 2C3H8O + 9O2 6CO2 + 8H2O When 3.00 g C3H8O and 7.38 g O2 are combined, how many moles of which reagent remain? (Molar masses; C3H8O=60.1 g/mol, O2=32.0 g/mol) 0.006 mol O2 0.024 mol C3H8O 0.24 mol O2 0.18 mol C3H8O In a bomb calorimeter, reactions are carried out at Constant pressure 1 atm pressure and 25 ℃ Constant volume 1 atm pressure and 0 ℃ Concept Checks If the graph below represents the molecular speed distributions for CO2 and CO, which curve shows the profile for CO2? For CO? If the graph below represents the molecular speed distribution for the same gas at two different temperatures, which curve shows the profile for the higher temperature? (EOC 6.123) What is the difference between diffusion and effusion? Practice Problems (EOC 6.125) Rank the gases SO2, CO2, and NO2 in order of increasing speed at 0 deg. C An Odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas?
Supplemental Instruction Iowa University Leader: Kia Course: CHEM 177 Instructor: Date: ACS Question The combustion reaction of C3H8O with O2 is represented by this balanced chemical equation. 2C3H8O + 9O2 6CO2 + 8H2O When 3.00 g C3H8O and 7.38 g O2 are combined, how many moles of which reagent remain? (Molar masses; C3H8O=60.1 g/mol, O2=32.0 g/mol) 0.006 mol O2 0.024 mol C3H8O 0.24 mol O2 0.18 mol C3H8O In a bomb calorimeter, reactions are carried out at Constant pressure Constant volume 1 atm pressure and 25 ℃ 1 atm pressure and 0 ℃ Concept Checks If the graph below represents the molecular speed distributions for CO2 and CO, which curve shows the profile for CO2? For CO? If the graph below represents the molecular speed distribution for the same gas at two different temperatures, which curve shows the profile for the higher temperature? (EOC 6.123) What is the difference between diffusion and effusion? Practice Problems (EOC 6.125) Rank the gases SO2, CO2, and NO2 in order of increasing speed at 0 deg. C An Odorous gas emitted by a hot spring was found to diffuse 2.92 times slower than helium. What is the molar mass of the emitted gas?