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How much KOH (in grams) is required to neutralize a sample of 125mL of 0.5N HCl that has just been added to 875mL of distilled water?
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
As a technician in a large pharmaceutical research firm, you need to produce 350.mL of 1.00 M potassium phosphate buffer solution of pH = 6.87. The pKa of H2PO4- is 7.21.
Choose the stronger of each pair of acids, respectively, and explain why: a) HBrO3 or HBrO b) HBrO2 or HIO2 A. a) HBrO because Br has a lower oxidation state (fewer number of O atoms around it) in HBrO than in HBrO3
Calculate the quantity of gas, in moles, if 127 L at 55.0 C has a pressure of 11.35 kPa.
The volume of a gas dropped from 300 ml to 280 ml when the original pressure of 200 torr was increased. what was the new pressure in kpa if the temperature is held constant
a zero-order reaction has a constant rate of 3.40times10-4 . if after 45.0 seconds the concentration has dropped to
the mass density of phosphorus vapour is 0.6388 kg per meter cube. What is the molecular formular of phosphorus under these conditions
Outline a complete mechanistic sequence for the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form thethree alkenes generated in the reaction
one day you notice that the outside temperature increase by 16 degrees Fahrenheit between your early morning jog and your lunch at noon. what is the corresponding change in temperature in the Celsius and Kelvin scales?
What is the theoretical yield (in grams) of gold when 1.378 L of hydrogen gas (density = 0.0902 g/L) reacts with 20.14 g of gold(III) chloride in solution
A 1.00 L buffer solution is 0.150 M in HC7H5O2 and 0.250 M in LiC7H5O2. Calculate the pH of the solution after the addition of 100.0 mL of 1.00 M HCl. The Ka for HC7H5O2 is 6.5 x 10-5.
enzyme1 (E1) is required to convert reactant B to product C. Enzyme 2 (E2) is required for the reverse reaction (C to B). The activity of E1 is 50 pmol of C created/10^6 cells *s and that of E2 is 40 pmol of B created/10^6 cells*s.
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