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We want to prepare a buffer of pH 8.5643 by adding HCN and NaCN to 1.860 L of solution. What is the ratio of HCN to NaCN (both given in moles) necessary to obtain the desired pH? [Note: Ka(HCN) = 4.900x10-10]
what are the structures for glycylserine and
Element x reacts with Hydrogen gas at 200 deg celsius to form compound Y. When y is heated to a higher temperature, it decomposes to the element x and hydrogen gas in the ratio of 559ml of H2
After the system had reached a steady temperature it was determined that 8.4 grams of ice had melted. What is the specific heat of the metal. The heat of fusion of ice is equal to 333 J/g.
Suppose that an enzyme has the capacity to convert substrate A (Km = 1 x 10-3 M) to a product P1. Suppose the same enzyme can also convert another substrate B (Km = 1 x 10-6 M) to a different product, P2.
Excluding water, what is the number of moles of each component present after reaction. What is the chemical equation for the equilibrium that you are using to determine the pH
Using the potential energy diagram below, answer the following questions concerning the given reaction: Draw the structure the is represented by the following 1, 2, 3and 4
Dehydration of 2-methyl-2-pentanol forms one major and one minor organic product. Draw the structures, including hydrogen atoms,
How many Joules of energy are stored in 1 pound (454 g) of sucrose? (Assume: Pressure = 1 atm, Temperature = 25°C; the respective ?Hf° for the reactants and products can be found in the thermodynamic table linked above. Show your calculation
A jogger runs at an average speed of 5.9 mi/h. a. How fast is she running in m/s? b. How many kilometers does she run in 98 min?
Transition metals can combine with carbon monoxide (CO) to form compounds such as Fe_x_(CO)_y. Assume that you combine 0.125 g of nickel with CO and isolate 0.364 g of Ni(CO)_x. What is the value of x
What is your theoretical yield. i) in mols ii) in grams iii) in mL b) What are other compounds that could possibly form that would decrease your % yield
Given the energy of a diatomic molecule with masses m1 and m2 constrained to move along the x axis. The force constant of the bond connecting the two atoms is k.
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