Methanol, CH30H (molar mass: 32.042 g/mol), reacts with O2 and can be used as fuel according to the reaction below (AH,n = -764 kJ/mol CH3OH). What mass of 0, (molar mass: 31.998 g/mol) is consumed when 432 kJ of heat is given off? CH3OH + → CO2 + 2H20 Select one: О а. 27.1 g оБ. 83.1 g Ос. 16.3g O d. 41.0 g For which one of the following reactions is the value of AH°, EQUAL to AH°; for the product? rxn Select one: O a. 20(graphite) + 2H2(g) → C2H4(g) O b. H2g) + ½02{g) → 2H20(g) O c. N2íg) + 03(g) → N203(9) O d. Nzíg) + Oz(g) → 2NOG)

Methanol, CH30H (molar mass: 32.042 g/mol), reacts with O2 and can be used as fuel according to the reaction below (AH,n = -764 kJ/mol CH3OH). What mass of 0, (molar mass: 31.998 g/mol) is consumed when 432 kJ of heat is given off? CH3OH + → CO2 + 2H20 Select one: О а. 27.1 g оБ. 83.1 g Ос. 16.3g O d. 41.0 g For which one of the following reactions is the value of AH°, EQUAL to AH°; for the product? rxn Select one: O a. 20(graphite) + 2H2(g) → C2H4(g) O b. H2g) + ½02{g) → 2H20(g) O c. N2íg) + 03(g) → N203(9) O d. Nzíg) + Oz(g) → 2NOG)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 45E: One of the components of polluted air is NO. It is formed in the high-temperature environment of...

See similar textbooks

Similar questions

Ethanol, C2H5OH, is a gasoline additive that can be produced by fermentation of glucose. C6H12O62C2H5OH+2CO2 (a) Calculate the mass (g) of ethanol produced by the fermentation of 1.000 lb glucose. (b) Gasohol is a mixture of 10.00 mL ethanol per 90.00 mL gasoline. Calculate the mass (in g) of glucose required to produce the ethanol in 1.00 gal gasohol. Density of ethanol = 0.785 g/mL. (c) By 2022, the U. S. Energy Independence and Security Act calls for annual production of 3.6 1010 gal of ethanol, no more than 40% of it produced by fermentation of corn. Fermentation of 1 ton (2.2 103 lb) of corn yields approximately 106 gal of ethanol. The average corn yield in the United States is about 2.1 105 lb per 1.0 105 m2. Calculate the acreage (in m2) required to raise corn solely for ethanol production in 2022 in the United States.
When one mole of ethylene gas, C2H4, reacts with fluorine gas, hydrogen fluoride and carbon tetrafluoride gases are formed and 2496.7 kJ of heat are given off. What is Hf for CF4(g)?
A rebreathing gas mask contains potassium superoxide, KO2, which reacts with moisture in the breath to give oxygen. 4KO2(s)+2H2O(l)4KOH(s)+3O2(g) Estimate the grams of potassium superoxide required to supply a persons oxygen needs for one hour. Assume a person requires 1.00 102 kcal of energy for this time period. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 1.00 102 kcal of heat, calculate the amount of oxygen consumed and hence the amount of KO2 required. The ff0 for glucose(s) is 1273 kJ/mol.
Carbon dioxide from the atmosphere weathers, or dissolves, limestone (CaCO3) by the reaction CaCO3(s)+CO2(g)+H2O(l)Ca2(aq)+2HCO3(aq) Obtain H for this reaction. See Table 6.2 for the data.
Graphite is burned in oxygen to give carbon monoxide and carbon dioxide. If the product mixture is 33% CO and 67% CO2 by mass, what is the heat from the combustion of 1.00 g of graphite?
4.60 Why are fuel additives used?
How much heat is released when a mixture containing 10.0 g NH3 and 20.0 g O2 reacts by the following equation? 4NH3(g)+5O2(g)4NO(g)+6H2O(g);H=906kJ
How much heat is released when a mixture containing 10.0 g CS2 and 10.0 g Cl2 reacts by the following equation? CS2(g)+3Cl2(g)S2Cl2(g)+CCl4(g);H=230kJ
Chlorine dioxide, ClO2, is a reddish yellow gas used in bleaching paper pulp. The average speed of a ClO2 molecule at 25C is 306 m/s. What is the kinetic energy (in joules) of a ClO2 molecule moving at this speed?
The equation for the combustion of 2 mol of butane can be written 2C4H10(g)+O2(g)8CO2(g)+10H2O(g);HO Which of the following produces the least heat? a Burning 1 mol of butane. b Reacting 1 mol of oxygen with excess butane. c Burning enough butane to produce 1 mol of carbon dioxide. d Burning enough butane to produce 1 mol of water. e All of the above reactions (a, b, c, and d) produce the same amount of heat.
Why is it important to give the states of the reactants and products when giving an equation for H?
Hypothetical elements A2 and B2 react according to the following equation, forming the compound AB. A2(aq)+B2(aq)2AB(aq);H=+271kJ/mol If solutions A2(aq) and B2(aq), starting at the same temperature, are mixed in a coffee-cup calorimeter, the reaction that occurs is a exothermic, and the temperature of the resulting solution rises. b endothermic, and the temperature of the resulting solution rises. c endothermic, and the temperature of the resulting solution falls. d exothermic, and the temperature of the resulting solution falls. e exothermic or endothermic, depending on the original and final temperatures.