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Calculate the enthalpy change for the thermite reaction: 2Al(s)+Fe2O3(s)→2Fe(s)+Al2O3(s), ΔH°rxn=-850 kJ when 8.00mol of Al undergoes the reaction with a stoichiometrically equivalent amount of Fe2O3
solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for this reaction.
Methane reacts with oxygen to form carbon dioxide and water as shown:. determine how much methane must have reacted If 72 grams of water is formed,?
Suppose you have a mixture of 2 substances. You know one of the substances is either 2-chlorobenzoic acid or diphenyl acetic acid. The second substance is either p-dibromobenzene or acenaphthylene.
When hydrochloric acid of 200 mL was mixed to a small piece of CaCO3 in the same calorimeter, the temperature increased by 4.25 degree celsius. determine the heat output for this reaction?
Two gas tanks are linked by a connecting tube of negligible volume with a valve. One contains 15 L of nitrogen at 7.2 atm of pressure. The other contains 8.3 L of helium at 4.1 atm of pressure.
You are given a crushed sample that is a mixture of limestone (CaCo3), lime (CaO), and sand. The calcium carbonate, limestone, is the only material present in the material that will decompose when heated
Some aromatic compounds also undergo nucleophilic substitution, propose a mechanism for this reaction and indicate what types of substituents would be expected to be most reactive
What is the new HPO4^2-/H2PO4- ratio and new pH of solution? The pKa of H2PO4- is 6.64. Use henderson-hasselbach. C) Now take a fresh 60mL of the 0.50M pH of 6.83 buffer and add 3.7mL of 1.00M NaOH. Caclulate the new pH of the solution.
assuming no heat loss, and that the specific heat (capacity) of water is 4.184 J/g*K, what is the heat capacity of the copper in J/K?
How many spots should you see on a TLC plate for your recrystallized benzoic acid (assuming your recrystallization worked)
If an analytical method has been developed and the retention time for a particular anabolic steroid has been determined, how might you use this method to determine the possibility of the use of anabolic steroids by an athlete.
Produce a document entitled copper include it's extraction methods it's physical properties ,uses,most importante chemical properties and complex ion formation
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