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By reason of electronegativity, predict whether the molecule ICl (iodine chloride) will be polar. If it should be polar, which end is positive and which end is negative? Depict a Lewis structure for the molecule CO, including formal charge. It turns out that, in the CO molecule, the carbon is the negative end of the molecule. Is this what you would expect based on electronegativity?
Depict a Lewis structure for the molecule O3, including formal charge and resonance. Derived from electronegativity differences, would you expect the O-O bonds in ozone to be polar? It turns out that these bonds are polar what could Define?
calculate the molarity of a solution made by adding 12.9 of CaCl_2 to a flask and dissolving the solid to total volume of solution equal
Write the acid/base equilibrium reaction (net-ionic) for the major species present in an aqueous solution of each of the following substances. Include aggregation states. Note that this text uses H3O+.
stock solution is prepared by adding 28 ml of 0.2 m na3po4 to enough water to make 76 ml. what is the po43-
How much energy in kilojoules is required to change 47.6grams of ice at 0 degrees of celcius water at the same tempature
A buffer containing 0.25 M NH3 (Kb = 1.8 x 10-5) and 0.40 M NH4Cl is prepared. a. What is the pH of this buffer solution. b. What is the pH of the solution after 25.00 mL of 1.00 M HCl is added to 975.0 mL of buffer
why is it best to cool the crucible and lid (and sample) in a desiccator rather than on the laboratory bench
Determine the value of K (the thermodynamic equilibrium constant) at each temperature. b) Assuming that ?H°rxn is independent of temperature, determine the value of ?H°rxn from these data.
draw the lewis structure of CCL2S
Which substance contains molecules that will not form hydrogen bonds?
What volume (in mL) of an 8% w/v acetic acid solution would be needed to form 2.2 L of carbon dioxide gas at 25.2 degrees Celsius and 0.9982 atm? Assume the acid is reacted with excess sodium bicarbonate, and round your final answer to two sig fig..
What is the heat of the reaction which forms 1.00 mole of gaseous monatomic bromine from 0.500 mole gaseous diatomic bromine.
What would be the pH of a buffer system containing 1.0 M NH3 and 0.10 M NH4Cl. (Kb(NH3) = 1.8 x 10-5)
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