Concept explainers
(a)
Interpretation:
The volume of 4.2mol Ar needs to be determined at STP.
Concept Introduction:
The ideal gas equation is represented as follows:
Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.
In the STP condition the volume occupied by one mole gas = 22.4L
The conversion factor
(b)
Interpretation:
The volume of 3.5g CO2 needs to be determined at STP.
Concept Introduction:
The ideal gas equation is represented as follows:
Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.
In the STP condition the volume occupied by one mole gas = 22.4L.
The conversion factor
(c)
Interpretation:
The volume of 2.1 g N2 needs to be determined at STP.
Concept Introduction:
The ideal gas equation is represented as follows:
Here, n is number of moles, P is pressure, V is volume, R is Universal gas constant and T is temperature.
In the STP condition the volume occupied by one mole gas = 22.4L
The conversion factor
Want to see the full answer?
Check out a sample textbook solutionChapter 7 Solutions
General, Organic, and Biological Chemistry - 4th edition
- A piece of dry ice (CO2(s)) has a mass of 22.50 g. It is dropped into an evacuated 22.50-L flask. What is the pressure in the flask at -4C?arrow_forwardIn terms of the kinetic molecular theory, in what ways are liquids similar to gases? In what ways are liquids different from gases?arrow_forwardThe effect of chlorofluorocarbons (such as CCl2F2) on the depletion of the ozone layer is well known. The use of substitutes, such as CH3CH2F(g), for the chlorofluorocarbons, has largely corrected the problem. Calculate the volume occupied by 10.0 g of each of these compounds at STP: (a) CCl2F2(g) (b) CH3CH2F(g)arrow_forward
- Answer the following questions: (a) If XX behaved as an ideal gas, what would its graph of Z vs. P look like? (b) For most of this chapter, we performed calculations treating gases as ideal. Was this justified? (c) What is the effect of the volume of gas molecules on Z? Under what conditions is this effect small? When is it large? Explain using an appropriate diagram. (d) What is the effect of intermolecular attractions on the value of Z? Under what conditions is this effect small? When is it large? Explain using an appropriate diagram. (e) In general, under what temperature conditions would you expect Z to have the largest deviations from the Z for an ideal gas?arrow_forwardA study of climbers who reached the summit of Mount Everest without supplemental oxygen showed that the partial pressures of O2 and CO2 in their lungs were 35 mm Mg and 7.5 mm Hg, respectively. The barometric pressure at the summit was 253 mm Hg. Assume the lung gases are saturated with moisture at a body temperature of 37 C [which means the partial pressure of water vapor in the lungs is P(H2O) = 47.1 mm Hg]. If you assume the lung gases consist of only O2, N2, CO2, and H2O, what is the partial pressure of N2?arrow_forwardHelium condenses to a liquid at 4.224 K under atmospheric pressure and remains a liquid down to the absolute zero of temperature. (It is used as a coolant to reach very low temperatures.) The vapor pressure of liquid helium at 2.20 K is 0.05256 atm. Calculate the volume occupied by 1.000 mol helium vapor under these conditions and compare it with the volume of the same amount of helium at standard temperature and pressure.arrow_forward
- A sample of carbon monoxide was collected over water at a total pressure of 756 torr and a temperature of 18 °C. What is the pressure of the carbon monoxide? (See Table 9.2 for the vapor pressure of water.)arrow_forwardWhen dry ammonia gas (NH3)is bubbled into a msp;125mLsample of water, the volume of the sample (initially, at least) decreases slightly. Suggest a reason for this.arrow_forwardIf equal masses of O2 and N2 are placed in separate containers of equal volume at the same temperature, which of the following statements is true? If false, explain why it is false. (a) The pressure in the flask containing N2 is greater than that in the flask containing O2. (b) There are more molecules in the flask containing O2 than in the flask containing N2.arrow_forward
- Consider a sealed flask with a movable piston that contains 5.25 L of O2 saturated with water vapor at 25C. The piston is depressed at constant temperature so that the gas is compressed to a volume of 2.00 L. (Use the table in Appendix 1 for the vapor pressure of water at various temperatures.) (a) What is the vapor pressure of water in the compressed gas mixture? (b) How many grams of water condense when the gas mixture is compressed?arrow_forward5.28 Calculate the mass of each of the following gases at STP: (a) 1.4 L of SO2. (b) 3.5105 L of CO2arrow_forwardIn Figure 10.17, ammonia gas and hydrogen chloride are introduced from opposite ends of a glass U-tube. The gases react to produce white, solid NH4CI. What are the relative root mean square speeds of HCl and NH3? (a) rms for HCl/rms for NH3 = 2.2 (b) rms for HCl/rms for NH3 = 1.5 (c) rms for HCl/rms for NH3 = 0.68 (d) rms for HCl/rms for NH3 = 0.46arrow_forward
- Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning