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Suppose you want to prepare a buffer solution having a pH of about 9.3. Describe how you would prepare the buffer solution using one of the weak bases listed in the Table below and any other necessary reagents.
base Kbmethylamine (CH3NH2) 4.4 x 10-4ethanolamine (HOCH2CH2NH2) 3.2 x 10-5ammonia (NH3) 1.8 x 10-5pyridine (C5H5N) 1.7 x 10-9
What main type of intermolecular attraction would you expect for cl2c0?
Imagine that you have a 7.00 gas tank and a 3.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
A compound made of elements from group 2A ("M" below) and group 6A ("X" below) of the periodic table would be expected to have a formula
For a given sample of {rm CH_3OH}, the enthalpy change on reaction is 19.0 kJ. How many grams of hydrogen gas are produced?
Consider a steel tank whose volume is 49.0 L and which contains O2 gas at a pressure of 18100 kPa at 29°C. What volume would the gas occupy at STP?
Explain how this model can be used to reduce the number of dangling bonds from 49 (unreconstructed) to 19 (constructed). B. Explain the origin of the name dimer adatom stacking fault.
Calculate the final temperature when a 16.4 gram sample of ice at 0oC is placed into a styrofoam cup containing 126 grams of water at 72.7 oC. Assume that there is no loss or gain of heat from the surroundings.
A solution to replace potassium loss contains 40.mEq/L each of K+ and Cl-. How many moles each of K+ and Cl- are in 1.5L solution
The heat of vaporization of diethyl ether (CH3CH2OCH2CH3) is 26.0 kJ/mol and its vapor pressure at 18 Celcius is 401 torr. What is the normal boiling point of diethyl ether?
what is its empirical formula. A 0.2000 gram sample of a compound (vitamin C) composed of only C, H, and O is burned completely with excess O2 . 0.2998 g of CO2 and 0.0819 g of H2O are produced. What is the empirical formula?
Draw the major organic product from the reaction of 2-(carboxymethyl)benzoic acid with acetic
what relative masses of dimethyl amine and dimethyl ammonium chloride do you need to prepare a buffe
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