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Concept explainers
(a)
Interpretation:
Effect of heating on density of 1 mole of
Concept Introduction:
Here,
(b)
Interpretation:
Effect of heating on mass of 1 mole of
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Effect of heating on average kinetic energy of molecules of
Concept Introduction:
Refer to part (a).
(d)
Interpretation:
Effect of heating on average velocity of molecules of
Concept Introduction:
Refer to part (a).
(e)
Interpretation:
Effect of heating on number of molecules of 1 mole of
Concept Introduction:
Refer to part (a).
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Chapter 12 Solutions
FOUND.OF COLLEGE CHEMISTRY
- How does hydraulic fracturing differ from previously used techniques for the recovery of natural gas from the earth?arrow_forwardWhat possible uses exist for the natural gas liquids that are removed from natural gas during its processing?arrow_forwardCalcium carbide, CaC2, is manufactured by reducing lime with carbon at high temperature. (The carbide is used in turn to make acetylene, an industrially important organic chemical.) Is the reaction endothermic or exothermic?arrow_forward
- 62 Ammonium dinitramide (ADN), NH4N(NO2)2, was considered as a possible replacement for aluminium chloride as the oxidizer in the solid fuel booster rockets used to launch the space shuttle. When detonated by a spark, AND rapidly decomposes to produce a gaseous mixture of N2,O2, and H2O. (This is not a combustion reaction. The ADN is the only reactant.) The reaction releases a lot of heat, so the gases are initially formed at high temperature and pressure. The thrust of the rocket results mainly from the expansion of this gas mixture. Suppose a 2.3-kg sample of ADN is denoted and decomposes completely to give N2,O2, and H2O. If the resulting gas mixture expands until it reaches a temperature of 100°C and a pressure of 1.00 atm, what volume will it occupy? Is your answer consistent with the proposed use of ADN as a rocket fuel?arrow_forwardUse the appropriate tables to calculate H for (a) the reaction between copper(II) oxide and carbon monoxide to give copper metal and carbon dioxide. (b) the decomposition of one mole of methyl alcohol (CH3OH) to methane and oxygen gases.arrow_forwardDefine the joule in terms of SI base units.arrow_forward
- Which of the following quantities can be taken to be independent of temperature? independent of pressure? (a) H for a reaction (b) S for a reaction (c) G for a reaction (d) S for a substancearrow_forwardYou have a gas, one of the three known phosphorus-fluorine compounds (PF3, PF3, and P2F4). To find out which, you have decided to measure its molar mass. (a) First, yon determine that the density of the gas is 5.60 g/L at a pressure of 0.971 atm and a temperature of 18.2 C. Calculate the molar mass and identify the compound. (b) To check the results from part (a), you decide to measure the molar mass based on the relative rales of effusion of the unknown gas and CO2. You find that CO2 effuses at a rate of 0.050 mol/min, whereas the unknown phosphorus fluoride effuses at a rate of 0.028 mol/min. Calculate the molar mass of the unknown gas based on these results.arrow_forwardA gaseous hydrocarbon reacts completely with oxygen gas to form carbon dioxide and water vapour. Given the following data, determine Hf for the hydrocarbon: Hreaction=2044.5KJ/molhydrocarbonHf(CO2)=393.5KJ/molHf(H2O)=242KJ/mol Density of CO2 and H2O product mixture at 1.00 atm, 200.c = 0.751g/L. The density of the hydrocarbon is less than the density of Kr at the same conditions.arrow_forward
- 5. An experiment is performed to measure the mass percent of CaCO3(s) in eggshells. Five different samples of CaCO3(s) of known mass react with an excess of 2.0M HCl(aq) in identical sealed, rigid reaction vessels. The pressure of the gas produced is measured with a pressure gauge attached to the reaction vessel. Since the reaction is exothermic, the reaction system is cooled to its original temperature before Cooling the HCl(aq) to a lower temperature than it was in the original experiment the pressure is recorded. The experimental data are used to create the calibration line below. Using eggshells that are more finely powdered than those used in the original experiment 0.10- 0.09 0.08- Using 2.0M CH3COOH(aq) instead of 2.0M HCl(aq) 0.07 * 0.06- Reducing the volume of the reaction vessel 0.05 0.04 CLEAR ALL 0.03- 0.02- 0.05 0.10 0.15 0.20 Mass of CaCO3(s) (grams) The experiment is repeated with an eggshell sample, and the experimental data are recorded in the table below. Mass of…arrow_forwardA 6.53 g sample of mixture of magnesium carbonate and calcium carbonate is treated with excess hydrochloric acid. The resulting reaction produces 1.71 L of carbon dioxide gas @28.0 degrees C and 735 torr pressure.arrow_forwardEffervescent tablets contain both citric acid (C6H8O7) and sodium bicarbonate (NaHCO3) and release carbon dioxide gas when dissolved in water as well as forming trisodium citrate (Na3C6H5O7) and water. A typical effervescent tablet contains 1.00 g of citric acid and 1.92 g sodium bicarbonate. (a) Assuming that carbon dioxide acts as an ideal gas, determine the work done due to the evolution of carbon dioxide by the dissolution of one effervescent tablet in water at 25.0 °C and atmospheric pressure (1 atm i.e. 101325 Pa).arrow_forward
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