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Draw all possible resonance structures and label if they are minor, major resonance contributors and draw the resonance hybrid.
a) -CH2CNb) +CH2CHCH2
Describe the three types of models (layer sequence drawings, computer graphics, balls and sticks) used for visualizing the three dimensional structure of unit cells
If 10ml of 0.1M zinc nitrate were added to 25mL of 0.1M Ba(OH)2, what would you obersve? write a chemical reaction for this process.
A gas of unknown molecular mass was allowed to effuse through a small opening under constant-pressure conditions. It required 67 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 24 s for 1.0 L of O2 gas to effu..
All of the following substances can function both as bronsted acids and bases except: HPO4 2-, PO4 3-, H2O
A physiological saline solution contains 154mEq/L each of Na+ and Cl-. How many moles each of Na+ and Cl- are in 0.600L of the saline solution?
What is the molar solubility of PbI2 in water. For PbI2, Ksp=7.9x10-9. You may assume that the ions do not form ion pairs in solution. Give your answer in moles per litre, accurate to two significant figures.
Ammonia and hydrogen chloride gases react to form solid ammonium chloride. A 10.0 L reaction flask contains ammonia at 0.483 atm and 22°C, and 169 mL of hydrogen chloride gas at 7.50 atm and 271 K is introduced.
Calculate delta H^degree (in kilojoules per mole) for benzene,C6H6 , from the following data: 2C6H6(l)+15O2(g)---->12CO2(g)+6H2O(l), delta H^degree= -6534 kJ
The acid-dissociation constant for an acid-base indicator HIn is 0.0000438. At 600 nm, the molar absorptivities are 2230 for HIn and 8900 for In-. Calculate the absorbance at 600 nm of a 1.00 x 10-4 M solution of the indicator at pH 4.81 in a 1.00..
Platinum exhibits an extremely intense emission line at 214.4 nm. Could the spectroscope that you used in this lab, also be used to observe this electromagnetic radiation?
Consider the titration of 100.0 mL of 0.100 M H2NNH2 (Kb = 3.0 10-6) by 0.200 M HNO3. Calculate the pH of the resulting solution after the 20.0 mL of HNO3 have been added.
What is the name of the product and it's structural formula between 2-propanol and benzoic acid
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