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During the dehydration reaction when acetaldehyde was reacted with KOH in ether, an intermediate was formed. What was this intermediate that was eventually converted to the final product?
a. Butanal
b. 3-Hydroxybutanal
c. 2-Butenal
d. a mixture of butanal and 2-butenal
How many kilojoules of heat are absorbed when 7.20g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
what mass ratio of sugar to water is required to raise the boiling point of a sugar solution 145 degrees celcius?
One liter of a gas has a pressure of 150.00 kPa at 25.0°C. If the pressure increases to 600.0 kPa and the temperature to 100.0°C, what would be the new volume of the gas?
Construct a spontaneous voltaic cell using the following materials: A Ni(s) electrode, a copper electrode, a 1.0 M Ni(NO3) (aq) solution and a 1.0 M CuSO4 (aq) solution.
Iodine-131 is a radioactive isotope. After 7.00 days, 54.7% of a sample of 131I remains.
Calculate the work done (in J) on the surrounding atmosphere (1atm pressure, 25.5 oC ) by the evolution of hydrogen in the subsequent reaction. State any assumptions you have made.
Calculate the molar concentration of OH - ions in an 01.33 M solution of hypobromite ion, BrO- (Kb = 4.0 10-6).
Calculate w (in kJ) when 390 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 426 K.
A sample consisting of various gases contains 3.1×10-6 mole fraction of radon. This gas at a total pressure of 34 is shaken with water at 30 . Calculate the molar concentration of radon in the water.
What is the freezing point of a solution prepared by dissolving 11.3 g of Ca(NO3)2 in 115 g of water?
Suppose a solution contains aqueous Hg2(NO3)2 . Write complete ionic equation to show the reaction of aqueous Hg2(NO3)2 with aqueous sodium chloride to form solid Hg2Cl2 and aqueous sodium nitrate. Express your answer as a chemical equation. Ident..
When titrating 0.15 M HCl with a calcium hydroxide solution of unknown concentration, 35 mL of acid are required to neutralize 25 mL of the base.
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