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High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa) to about 60,000 kPa (60,000,000 Pa). It is often convenient to know the pressure in torr. If an HPLC procedure is running at a pressure of 4.24×108 Pa , what is its running pressure in torr?Express the pressure numerically in torr.
Draw the organic product(s) of the reaction of p-methylbenzoic acid with LiAlH4, then H3O+ in the window below. If no new products are formed, tell OWL by drawing ethane, CH3CH3.
verify the law of multiple proportions for an element x which forms oxides having percentages of x equal to 77.4
A Reaction has a rate constant of 1.22*10^-4 /s at 20 degrees Celsius and 0.227 /s at 75 degrees Celsius. 1. Determine the activation energy for the reaction (kJ/mol)
Lab Report – Oxidation of 9-fluorenol to 9-fluorenone a. Why this reaction can be classified as an oxidation? What is the function of Sodium hypochlorite? b. How TLC can help you to determine if the reaction was successful?
The crystals are recovered by filtration as well as rinsed with 0.5mL of ice cold methanol. After saying the weight of the crystals is 5 mg. Explain why was the recovery so poor? Explain what could she do to improve this process?
How much work would have been done if the gas were ideal? Account for the differences the two values.
Draw the structure of the following three isomeric amides with chemical formula C6H11NO. Draw all three structures in the same window, DO NOT separate them with an arrow
During fractional distillation, which of the following chemicals would come out at the top of the tower?.. octane, ethane, wax, or coal tar?
PI3Cl2 is a nonpolar molecule. Based on this information, determine the I-P-I bond angle, the Cl-P-Cl bond angle, and the I-P-Cl bond angle.
how would you detect the presence of mercury in a sample potentially containing other group 1 cations? detail the
How much energy (kJ) is required to convert a 25.0 g ice cube at -15.0oC to water vapor at 250oC?
A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl(s)+e- -->Ag(s)+Cl-(aq). The two cell compartments have [Cl-]= 1.53X10^-2M and [Cl-]= 2.60M , respectively.
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