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Gasoline is composed primarily of hydrocarbons, including many with eight carbon atoms, called octanes. One of the cleanest-burning octanes is a compound called 2,3,4-trimethylpentane, which has the structural formula shown in the figure. The complete combustion of one mole of this compound to CO2(g) and H2O(g) leads to Delta H = -5064.9 kJ/mol
By using the information in this problem and data from Appendix C, calculate Delta H for 2,3,4-trimethylpentane.
Find out how much energy is needed to raise the temperature of 22.8 g of diethyl ether from -10.0 degree celsius to 142.0 degree celsius?
Calculate the average molecular weight of a gaseous mixture with the following composition on a mole % basis: CH4= 30%, H2= 10% and N2= 60%.
a student collects 31.8 mL of argon gas at a temperature of 21 Celsius and a pressure of 755 mmHg. What is the volume of argon at STP?
30.0 mL of pure water at 280. K is mixed with 50.0 mL of pure water at 348 K. What is the final temperature of the mixture? Ignore significant figures for this problem.
Which compound requires a higher energy photon to cause a p to p* (HOMO/LUMO) transition,
Describe how this observation is consistent with the law of conservation of charge.
DNA polymerase (DNA pol) requires divalent magnesium for activity. Alcohol dehydrogenase (ADH) requires nicotinamide adenine dinucleotide
If you combine equal volumes of the following solutions, which combinations will result in the desired buffer? Why are the answers are 0.20 M CH3CO2H + 0.10 M NaOH and 0.20 M Na(CH3CO2) + 0.10 M HCl
the major differences in the dehydration of an alcohol by an E1 and E2 reaction mechanism.
Why do the metals Co, Rh, and Lr form octahedral complexes (rather than tetrahedral or square planar complexes)
A brand of gasoline has a density of 0.737 at 25 degrees Celsius . How many grams of this gasoline would fill a 13.4 tank?
Cesium chloride crystallizes in a cubic unit cell with Cl- ions at the corners and a Cs ion in the center. 1. Count the numbers of positive and negative charges
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