12. Common automobile airbags respond to a collision by triggering the explosive decomposition of sodium azide (NaN3) to its elements. In a lab test, a 5.0 g sample of sodium azide was decomposed, and the nitrogen gas generated was collected over water at 26 °C. The total pressure of gases was 745.5 torr, with 25.2 torr attributed to the water vapor. Assuming 100% yield of product, what volume of dry N2 was generated? (FYI - azide is a polyatomic ion, N3) NaN3 (s) →

12. Common automobile airbags respond to a collision by triggering the explosive decomposition of sodium azide (NaN3) to its elements. In a lab test, a 5.0 g sample of sodium azide was decomposed, and the nitrogen gas generated was collected over water at 26 °C. The total pressure of gases was 745.5 torr, with 25.2 torr attributed to the water vapor. Assuming 100% yield of product, what volume of dry N2 was generated? (FYI - azide is a polyatomic ion, N3) NaN3 (s) →

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.93PAE: 93 The complete combustion of octane can be used as a model for the burning of gasoline:...

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50 The first step in processing zinc metal from its ore, ZnS, is to react it with O2 according to the reaction 2ZnS(s)+3O2(g)2ZnO(s)+2SO2(g) If 620 kg of ZnS is to be reacted, what volume of oxygen at 0.977 atm 34.0 C is needed (at a minimum) to carry out this reaction?
The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction: MO(s)+CO2(g)MCO3(s) A 2.85-g sample containing only MgO and CuO is placed in a 3.00-L container. The container is filled with CO2 to a pressure of 740. torr at 20.C. After the reaction has gone to completion, the pressure inside the flask is 390. torr at 20.C. What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO2.
Ethanol, C2H5OH, is produced industrially from ethylene, C2H4, by the following sequence of reactions: 3C2H4+2H2SO4C2H5HSO4+( C 2 H 5)2SO4C2H5HSO4+( C 2 H 5)2SO4+3H2O3C2H5OH+2H2SO4 What volume of ethylene at STP is required to produce 1.000 metric ton (1000 kg) of ethanol if the overall yield of ethanol is 90.1%?
A mixture of chromium and zinc weighing 0.362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted, 225 mL dry of hydrogen gas was collected at 27C and 750. torr. Determine the mass percent of Zn in the metal sample. [Zinc reacts with hydrochloric acid to produce zinc chloride and hydrogen gas; chromium reacts with hydrochloric acid to produce chromium(III) chloride and hydrogen gas.]
One molecule of hemoglobin will combine with four molecules of oxygen. If 1.0 g of hemoglobin combines with 133 mL of oxygen at body temperature (37 C) and a pressure of 743 tort, what is the molar mass of hemoglobin?
A chemist weighed out 5.14 g of a mixture containing unknown amounts of BaO(s) and CaO(s) and placed the sample in a 1.50-L flask containing CO2(g) at 30.0C and 750. torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230. torr. Calculate the mass percentages of CaO(s) and BaO(s) in the mixture.
99 Pure gaseous nitrogen dioxide (NO2) cannot be obtained, because NO2dimerizes, or combines with itself, to produce a mixture of NO2 and N2O4. A particular mixture of NO2, and N2O4 has a density of 2.39 g/L at 50°C and 745 torr. What is the partial pressure of NO2 in this mixture?
93 The complete combustion of octane can be used as a model for the burning of gasoline: 2C8H18+25O216CO2+18H2O Assuming that this equation provides a reasonable model of the actual combustion process, what volume of air at 1.0 atm and 25°C must be taken into an engine to burn 1 gallon of gasoline? (The partial pressure of oxygen in air is 0.21 atm and the density of liquid octane is 0.70 g/mL.)
56 Consider the following reaction: 6NiO(s)+4CIF3(g)6NiF2(s)+2Cl2(g)+3O2(g) What mass of NiO will react with a sample of ClF3 ags that has a pressure of 250 torr in a 2.5-L flask at 20 C?