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When an electron in Hydrogen moves from n=8 to n=2 light with a wavelength of how many nm?
Calculate q, and determine whether heat is absorbed or released when a system does work on the surroundings equal to 64 J and ?U = ?213 J.
how many grams of calcium hydroxcide will be formed in this reaction when 4.44 grams of calcium oxide and 7.77 grams of
a weak acid ha is found to ionize 17.8 when mixed at a concentration of 0.3 moll. what is the value of ka for this
the rate constant for the second order -reaction is 2NOBr(g)------>2NO(g)+Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose.
What is the equilibrium concentration of fluorine if the initial concentrations of bromine and fluorine were 0.113 moles/liter in a sealed container and no product was present initially
Combustion reactions are exothermic. The heat of reaction for the combustion of cyclohexane, C6H12, is 936.8 kcal/mol. What is the heat of combustion for cyclohexane in kcal/gram
A system obtains the amount of heat equal to q > 0 from the surroundings at constant volume. Will the internal energy of the system increase, decrease, or remain constant? Will the temperature of the system increase or decrease
calculate the pH and molar concentrations of H2A, HA- and A2- for each of the solutions below:a) 0.116 M solution of H2A
write the complete mechanism for the initiation and propagation steps using free radical notation for free radical notation mono-chlorination reaction of the alkane: 2, 4 - dimethylpentane.
In an experiment you combine 4-methyl-2-pentene and water, in the lab you setup the experiment using a a heater, condenser and N2 gas and add the reagent H2SO4
Barium sulfate, BaSO4, is made by the following reaction: Ba(NO3)2(aq) + Na2SO4(aq) à BaSO4(s) + 2NaNO3(aq).
When 6.6 g solid NaOH is dissolved in 30.0 g of water in a coffee cup calorimeter, the temperature rises from 25.5 to 36.1. How much heat is produced by the dissolution process? the specific heat is 4.184
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