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1) World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 Btu), generally called a "quad." In 2015, world energy consumption is projected to be 5.81 x 10^17 kJ. 1 Btu = 1054 J. A Btu is the amount of heat required to raise the temperature of 1 lb of water by 1 degree F. How many quads of energy does world energy consumption quantity represent?
2) Current annual energy consumption in the US is 99.7 quads. Assume that all this energy is to be generated by burning CH4(g) in the form of natural gas. If the combustion of the CH4(g) were complete and 100% efficient, how many moles of CH4(g) would need to be combusted in order to provide the U.S. energy demand?
3) How many kilograms of CO2(g) would be generated in the combustion?
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
A sodium thiosulfate, Na2S2O3, solution has a concentration of 0.150 M. An end point for this titration occurs when 32.89 mL of the sodium thiosulfate solution reacts with 24.80 mL of I2 solution.
In the reaction 2 C8H18 + 25 O2 ? 16 CO2 + 18 H2O, if the rate of change in the concentration of CO2, ?[CO2]/?t, equals 0.51M/s, what is the value of ?[O2]/?t, the rate of change in the concentration of O2
The average person generates about 2500 Kcal of heat a day. How many kilowatt-hours of energy is this? If walking briskly dissipates energy at 500 W, what fraction of the day's energy does walking one hour represent.
A mixture of 0.152 moles of C is reacted with 0.117 moles of O2 in a sealed, 10.0L vessal at 500K, producing a mixture of Co and CO2. The total pressure is 0.6879 atm. What is the partial pressure of CO?
"Air" bags for automobiles are inflated during a collision by the explosion of sodium azide, NaN3. The equation for the decomposition is 2NaN3(s) ? 2Na(s) + 3N2(g). What mass of sodium azide would be needed to inflate a 9.8-L bag to a pressure of 2...
How many moles of AgCl are produced when 100.0 mL 0.387 M silver nitrate, AgNO3, and 50.0 mL of 0.774 M sodium chloride, NaCl, are mixed AgNO3(aq)+NaCl(aq)---->AgCl(s)+NaNO3(aq)
The vapor pressure of ethanol is 400 mmHg at 63.5 degree celsius. Its molar heat of vaporization is 39.3 kJ/mol. What vapor pressure of ethanol, in mmHg, at 34.9 degree celsius
explain why cis-1-chloro-4-t-butylcyclohexane reacts rapidly with sodium ethoxide while the trans-isomer react slowly
Which choice correctly describes the electron pairs in the valence shell of the central atom in a molecule of Cl2O?
Acid precipitation is the term generally used to describe rain or snow that is more acidic than normal. One cause of acid precipitation is the formation of sulfuric and nitric acids from various sulfur and nitrgoren oxides produced in volcanic eru..
For a given sample of CH_3OH, the enthalpy change during the reaction is 82.1 kJ. How many grams of methane gas are produced
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