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Explain why is longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography?
The average water loss during a triathlon is 1.40 L in one hour. The average time to finish a triathlon is 12.6 hours. How much sweat is lost in m^3?
Which of the following is the most effective buffer system for a pH value of 4.45?
Balance the chemical equation when aqueous ammonium phosphate and aqueous calcium choloride are mixed. What is the sum of the coefficeints?
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
Find the volume in milliliters of 0.35 NaOH required to neutralize the HCl produced by complete solvolysis of 1ml of t-BuCl (2-chloro-2-methylpropane)
How many grams of solid aluminum sulfide can be prepared by the reaction of 11.0 g of aluminum and 16.4 g of sulfur and how much of the non-limiting reactant is in excess
The vaporizaation for the compound is 24.75 kJ/mol. Calculate the heat required to convert 50.0 g of freon 11 from liquid at -50 C to a gas at 50 C.
The drying oven, although thought to be set at 125°C, had an inside temperature of 84°C. How will this error affect the reported percent by mass of the limiting reactant in the salt mixture. too high, too low, or unaffected
At 700 Kelvin the Kp=54 for H2 + I2 > 2HI and Kp=1.04E-4 for N2 + 3H2 > 2NH3. Determine the Kp for reaction 2NH3 + 3I2 > 6HI + N2 at 700 Kelvin.
Atoms of different elements also have different average masses, just like kernels and marbles. Use the mass values from a periodic table to answer the following questions.
question you would like to prepare a buffer solution using acetic acid and sodium acetate. you take a 15.00 ml aliquot
? sample of neon has a volume of 1.50 litres initially at 16 degrees celsius. when the volume of the sample is charged
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