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A student determines the iron(II) content of a solution by first precipitating it as iron(II) hydroxide, and then decomposing the hydroxide to iron(II) oxide by heating. How many grams of iron(II) oxide should the student obtain if his solution contains 38.0 mL of 0.483 M iron(II) nitrate?
Calculate pH of the solution after addition of 0.20 mols of KOH. The Ka for HNO2 is 4.3*10^-4
Calculate the Ksp for Na2B4O5(OH)4 from this data. d. What is the free energy change for the dissolution of Na2B4O5(OH)4 at this temperature?
A collapsed balloon is filled with He to a volume of 11.2L at a pressure of 1.00 atm. Oxygen (O2) is then assed so that the final volume of the ballon is 21
The lid is tightly sealed on a rigid flask containing 3.50 L H2 at 17 °C and 0.913 atm. If the flask is heated to 71 °C, what is the pressure in the flask?
If 5.20mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per gram?
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg yr-1.
Write the two chemical equations that show the titration reactions of the carboxylic acid group and the amino group of glyclyglycine
how many grams of HNO3 must be dissolved to make 25L of a solution that has a pH of 1.5
In the expression for f which you obtain, use a power series expansion of the exponential function
In the lower troposphere, ozone is one of the components of photochemical smog. It is generated in air when nitrogen dioxide, formed by the oxidation of nitrogen monoxide from car exhaust, reacts by the following mechanism.
Provide some diagnostically useful differences you would expect in the IR spectra between starting materials and product for the reaction you carried out (e.g. if I was asked this regarding the oxidation of cyclohexanol to cyclohexanone
MnO4-(aq) I-(aq)?Mn2 (aq) I2(s), the number of electrons gained in cathode is ( )
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