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You are given a recipe for a buffer that contains 5% (w/v) MgSO4.7H2O. However, you only have MgSO4 anhydrous available to you. How much MgSO4 anhydrous do you need to make 0.5L of the buffer with the same molar concentration as in the recipe? Show your calculations
Show two different ways to make methyl propionate, using methanol, propionic acid and other necessary reagents The methanol and propionic acid do not have to both be used in the first step.
what is the ratio of acetate to acetic acid in a 0.1 m buffer at ph 4.75?what happens when 5 ml 0.1 m hcl is added to
Use the modified form of the Clausius-Clapeyron equation to estimate the boiling point of water at 24.0 torr pressure
Calculate the amount of heat required to heat a 3.8kg gold bar from 27 degree celsius to 63 degree celsius.
Name two intermolecular forces that are mixed up in chromatography and the roles that they play during separation.
If 15 mL of a 1 M HCl solution is mixed with 25 mL of a .250 M NaOH solution in a process that produces 273 mg of NaCl, what is the percent yield
Calculate the quantity of heat in kJ, associated with a 33.5 degrees Celsius in temperature in a 5.85kg aluminum bar ( specific heat of aluminum= 0.903 J g-1 C-1 )
calculate the total heat change the deltae the pv work and the deltah when 54 g of ice is converted into54g of steam.
A solution has a volume of 2.0 L and contains 36.0 g of glucose (C6H12O6). If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule.
The second container is kept at 149.2 K. What is the volume (in liters) of nitrogen gas in container 2? Containers are kept at a constant pressure.
How do you think the use of quantitative methods related to these advantages and disadvantages? 2. How do forecast practitioners rank various forecasting models applied to any given problem? Which technique is used most often in practice and why?
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