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Given the following set of reations and their associated heats of reactions calculate delta H for the following reaction: 2NH3(g) + 3N2O(g) ---- 4 N2(g) + 3 H2O(l) a. 4 NH3(g) + 3O2(g) ---- 2 N2 (g) + 6H20 (l) delta H -1531 kj b. N2O(g) + H2(g) --- N2(g) + H2O (l) delta H = -367.4 kj c. H2(g) + 1/2 O2(g) --- H2O(l) delta H= -285.9 kj
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
What is the mechanism of the formation of 1-bromobutane from 1-butanol using H2SO4 and NaBr? Also, how are1-butene and di-n-butyl ether are formed
Menthol is a crystalline substance with a peppermint taste and odor. When 0.829 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 4.42 °C
Write net ionic equations for the reactions that take place when aqueous solutions of the following substances are mixed.
How many molecules of acetylene (HCCH) react with 149 molecules of oxygen to produce carbon dioxide and water?
what is the mole fraction of hydrogen in a gaseous mixture that consists of 8.00 g of hydrogen and 12.00 g of neon in a 3.5 liter container maintained at 35.20 degrees celsius?
1. explain briefly that how hcl could test for limestones presence use the balanced chemical equation for this and
Using the values from Appendix C, calculate the value of change H degrees for each of the following reactions
What is the Cl ? concentration just as Ag2CrO4 begins to precipitate when 2.0 M AgNO3 is slowly added to a solution containing 0.048 M Cl ? and 0.048 M CrO42-?
What is the age of a rock whose Argon 40 / Potassium 40 ratio is 1.55? The half life of Potassium 40 is 1.28 x 10^9 years.
X reacts with one molar equivalent of hydrogen in the presence of a palladium catalyst to form 1,2-dimethylcyclopentane. Treatment of X with ozone follwed by zinc in aqueous acid gives a dialdehyde.
Chloral hydrate, a sedative, contains C 14.52%, H 1.83%, Cl 64.30%, and O 19.35%. If it has a molar mass of 165.42 g, what is the molecular formula of chloral hydrate?
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