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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 10^17Kj . The use of the British thermal unit (Btu) is common in much engineering work. (1 Btu = 1054J) A BTU is the amount of heat required to raise the temperature of 1 Lb of water by 1 degree . How many quads of energy does world energy consumption quantity represent?
What is the importance of chemistry to agriculture, Write summary of total one page and include references as well.
Draw all the resonance structures for the N2O4 molecule. The skeletal structure of the molecule is
the fuel has an average formula of 15 of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings); the density of the fuel is 0.78 the initial temperature of the water is 25.0 and the standard enthalpy of fo..
Estimate the value of the equilibrium constant at 640 K for each of the following reactions. DELTA Hf and S^o for BrCl (g) is 14.6 kj/mol and 240.0 J/mol*k , respectively. 2NO2(g) double arrows N2O4 (g)
a 4 g sample of the hydrated crystal baoh2bull chih2o is heated until all the water is removed. the remaining solid
The three pKa values for phosphoric acid are 2.3, 7.2, and 12.1. Calculate the amount of each salt that you will need to prepare the buffer.
A scuba diver with a lung capacity of 5.4L inhales a lungful of air at a depth of 47m and a pressure of 5.7 atm. If the diver were to ascend to the surface (where the pressure is 1.0atm ) while holding her breath, to what volume would the air in h..
Draw a complete electronic mechanism of the aldol product between benzaldehyde and acetophenone.
The reaction H2 + O2 + N2 ? NO + HNO + H is shown to have the following rate behavior: Rate (M/s) [H2] (M) [O2] (M) [N2] (M) 0.0028 0.2 0.4 0.2 0.0028 0.4 0.4 0.2 0.0056 0.4 0.4 0.4 0.0056 0.4 0.8 0.4 a) What is the rate law for the reaction. b) W..
The use of phenols such as tert-butylcatechol as free-radical scavengers is based on the fact that phenolic hydrogens are readily abstracted by radicals
Therefore the formula is N2O4 Dinitrogen tetraoxide. Recognizing Incorrect Names and Formulas of Explain what is wrong with the name of formula in the second.
An argon ion laser which operates at 488.2 nm is used to excite the tagged proteins and observe fluorescence. A 5 µM solution gives a signal of 0.852 relative fluorescence units. What is the wave number of the laser light at 488.2 nm?
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