Calculate the amount of heat evolved in complete oxidation
Calculate the amount of heat evolved in the complete oxidation of 8.17 g of Al at 25oC and 1 bar pressure. The standard heat of formation of Al2O3 is -1676 kJ/mol. 4 Al(s) + 3 O2(g) 2 Al2O3(s).
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Near the triple point (T=273.15K), the vapor pressure of ice is given by ln(P)= -5924/T + 2.72ln(T)-0.0072T + 9.912 where P and T are expressed in torr and K, respcetively.
Boron has two naturally occuring isotopes,, 10B (19.9%) and 11B(80.1. althought the b2 molecule doesn not exist naturally on earth, it been been produced in the laboratory and been observed in stars.(A) how many molecules are possible? (b) what ar
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. Briefly explain how the difference simply may be sampling error.
Consider the constitutional isomers 2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene. When each of these alkenes is subjected to catalytic hydrogenation (H2, Pt), a single product results. Which of the following best describes the stru
Cheap ethanol, C2H5OH, manufactured from crude oil, can be used in fake wine instead of of ethanol derived from fermentation of grapes. this fake wine.
Aluminum dissolves in an aqueous solution of NaOH according to the following reaction: Which is the limiting reagent?
What are the structures for glycylserine and seryglycine
A sample of neon gas is held in a rigid 1.814L container with a pressure of 1.273atm at 25 C. 3.193g of an unknown gas is added to the container. The temperature remains constant, but the pressure rises to 2.386atm. What is the molar mass of the a
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
What is the structure of the polymer formed from pentamethylene diamine and sebacoyl chloride with the repeating unit
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