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A 505g piece of copper tubing is heated to 99.90oC and placed in an insulated vessel containing 59.8g of water at 24.8oC. Assuming no loss of water and that the vessel has a heat capacity of 10.0 J/K What is the final temperature of the system? (specific heat capacity - c of copper = 0.387J/g•K)
In the Balmer-Rydberg equation, what value of is used to determine the wavelengths of the Balmer series?
The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, B, C, and D. 1H NMR of D: d 8.1-7.5, multiplet, 5H; 2.85, quartet, 2H; 1.30, triplet, 3H.
Hydrocyanic acid (HCN) is a weak acid with Ka = 4.9 x 10-10. The pH of a solution that contains equal numbers of moles of HCN and KCN is closest to
Explain the structure for 4-ethyl-2,3-dimethyl-2-heptene?
How many grams of Ag3PO4 can be produced from the reaction of 2.50 L of a 0.200M AgNO3 with an excess of 0.750 K3PO4 solution according to the following equation?
if a sample of 4.17 L of ethane gas at 725 C is cooled to 175 C at constant pressure, what is the new volume?
The equilibrium constant, Ka, for a given acid is very large. When this acid is placed in water, we can say that _____. a. its ionization equilibrium lies far to the left
A silver electrode is placed in a saturated solution of AgBr. This half-cell is connected to a standard hydrogen electrode and the voltage is found to be +0.437 V. Calculate Ksp for AgBr.
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.
How much heat in kilocalories is required to melt 1.70 mol of isopropyl alcohol ? The heat of fusion and her of vaporization of isopropyl
predit the products of the reactions of phenylacetaldehyde,c6h5ch2cho,with the following reagents: 1) NaBH4 then H3O+ 2)aqueous acidic CrO3 3)NH2OH 4)CH3MgBr, then H3O+ 5) CH3OH, H+ catalyst
What is the standard change in Gibbs free energy of this reaction at 25 °C. Hint: The equilibrium constant is related to the change in Gibbs free energy
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