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If you used 20 ml water to recrystallize salicylic acid at 10 °C, estimate the amount of product that can be lost as a result of dissolving in the filtrate. (solubility at 10 °C =0.14/100 ml water). Calculate the loss if you had used 4 mls of water.
Use the graph from the Introduction that plots the density of ethanol solutions from 20 to 60 mass percent to answer the following questions:
For each reaction, identify the acid-base conjugate pairs. Then rank all reacionts in order of increasing tendency for the reaction to go to completion (to the right)
Suppose that you are carrying out a dehydrohalogenation reaction on 2-bromo-2,3-dimethylpentane to yield alkenes
A calorimetry experiment determined that the combustion of 1.01 g of H2 reacting with excess O2 producing H2O gave q=143 kJ. Calculate the change in enthaply.
If the methane contained in 4.00 of a saturated solution at 25 was extracted and placed under STP conditions, what volume would it occupy?
The work function (i.e binding energy) W, of cesium of metal is 3.43 x 10^-19 J. Calculate the kinetic energy of the ejected electron if light of frequency 1.00 x 10^15 s-1 is used for irradiating the metal.
A solution is made by mixing 12.0 g of NaOH and 75.0 mL of .200 M HNO3. Write a balanced equation for the reaction that occurs between the solutes. Calculate the concentration of each ion remaining in solution. Is the resultant soluiton acidic or ..
moles of CuO produced: or formula how to find out moles of CuO for lab Decomposition of Malachite.
The temperature of the calorimeter increases from 24.56 *C to 32.01 *C. What is the heat of combustion per gram of quinone and per mole of quinone?
Balance the following redox equation using the smallest integers possible and select the correct coefficient for the hydrogen sulfite ion.
What mass of glucose (C6H12O6 ; 180.2 g/mol) is needed to prepare 2.25 L of a solution that has the same osmotic pressure as blood at 37 °C ? (R = 0.08206 L·atm/mol·K)
What is the energy released when 0.711 g are converted to energy? Express your answer in joules. For self-consistent units you must use kg because 1 J = 1 kg m2/s2.
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