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A 20.0mL sample of 0.20 M sodium acetate is titrated with 0.11 M HCL(aq). Explain what is the pH after the addition of 50.0mL HCl (aq)? (Kb ofCH3CO2- = 5.6 ´10-10)
In the one that minimizes the formal charge, how many double bonds does the chlorine atom make? How many double bonds does each N2O5 resonance structures have
A nurse was accidentally exposed to potassium-42 while doing some brain scans for possible tumors. The error was not discovered until 36 hours later when the activity of the potassium-42 sample was 1.9 aCi.
What is the buffer component ratio, ([BrO-]/[HBrO]) of a bromate buffer that has a pH of 7.88. Ka of HBrO is 2.3 x 10-9
Suppose that the silver-silver chloride electrode in the figure is replaced by a saturated calomel electrode. Calculate the cell voltage if [Fe2+]/[Fe3+] = 5.0 10-3. V
If energy obtained from burning 1.23 pounds of butane (feul value is 10.85 kcal/g) is used to heat 126.5 kg of water at an initial temperature of 20.7 degrees C, what is the final temperature
Write the possible polymeric structure formed between sebacoyl chloride and butane-1,4-diamine, what is the appropriate name for this polymer?
Proteins are least soluble and often precipitate when the pH of the solution equals their pI. This property may be used to selectively permeate many other contaminating proteins, leaving the protein of interest in solution
3-ethylbenzoic acid Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms. Draw a benzene ring with alternating single and double bonds between the carbon atoms
For the molecule CH3COOCH3, indicate the orbitals involved in the bonding of the carbon and oxygens. Draw a picture to show how the orbitals overlap in both cases.
The bottom of a box has a surface area of 25.0 cm2. The mass of the box is 34.0 kilograms. Acceleration due to gravity at sea level is 9.80 m/s2. What pressure is exerted by the box where it rests?
Write a balanced equation for the reaction of NaCH3COO and HCl. Express your answer as a chemical equation.
the rate constants of some reactions double with every 10 degree rise in temperature. assume that a reaction takes
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