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Presuming that all of the heat evolved in burning 11.88 grams of pentane is transferred to 7.91 kilograms of water specific heat = 4.184 J g-1 degC-1 primarily at 23.4 degrees Celsius compute the increase in temperature of the water.
How many moles of hydrogen are produced by the unbalanced reaction below when 0.195 moles of magnesium and 0.102 moles of water are allowed to react? Mg (s) + H20 (l) > Mg(OH)2 (s) + H2 (g)
Permanganate ion will oxidize Cr3+ in acidic solution to produce Mn2+ and what other product. The answer is dichromate, but why.
A 25.0 ml solution of .0600 M EDTA was added to a 57.0 ml sample containing an unknown concentration of V3+. All V3+ present formed a complex, leaving excess EDTA in solution.
An industrial hygiene survey has been conducted to determine whether exposure of workers to ethyl benzene (molecular weight 106) exceeded the OSHA PEL of 100 ppm.
Calculate the full width at half height (FWHH) of a Gaussian function exp(-πx2/σ2). By considering a monochromatic source show that a Michelson interferometer performs a Fourier transform of the source in the frequency domain to a signal in the tim..
Assuming ideality, how many grams of Xe are needed to inflate a bag with a volume of 867 mL at a pressure of 1.29 bar
What mass of NH4Cl should the student dissolve in the solution to turn it into a buffer with pH =8.77
How does this work. Do you just omit the H20/Oh-. Calculate the value for the equilibrium constant for each of the following aqueous reactions.
One student measure the pH of the following three solution (weak base, conjugate acid and buffer). Using this data, please calculate the pKa and pKb (show calculation). a. pH = 8.7 for 0.010 M RNH2 (weak base)
If this experiment was carried out precisely as directed in the procedure section by a student in Australia, for instance, must that student come up with a formula for the magnesium oxide other than MgO. Why not
how many kilograms of methane gas must be discharged in a room with a volume of 306 cubic meters to reach the lower
Explain what is the vapor pressure of seawater that has an osmotic pressure of 27.36 atm at T = 30 ° C. Define the pure vapor pressure of water at this
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