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1. What is a covalent bond? What is an unshared pair (nonbonding pair or lone pair)?
2. Make a list of rules for writing Lewis Structures.
3. What does VSEPR stand for? What is VSEPR used to do? What is the principle behind the VSEPR theory?
4. Draw the correct Lewis structures and molecular geometries for H2O, NH3, BrF3 and PC11F3. Name each molecular geometry.
unit cell problem of copper cu is a face-centered cube that has an edge lenth of 3.62 a note 1a110-10 m. determine the
The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20*10^-4 min-1, and the half life at 760 K is 29 min. Calculate the activation energy for this reaction.
What is the final pH after 1 drop (0.05 mL) of 6M HCl is added to 1.0 L of freshly prepared pure water that was originally at a pH of 7.0. Is there a significant pH change
A 20.0mL sample of 0.50 M H2C6H6O6 ascorbic acid, a diprotic acid was titrated with .50 M NaOH. The subsequent data were gathered during the titration. Explain what is Ka2 for ascorbic acid
Calculate the rms (average) speed of ClO2 atoms or molecules at 297 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant.
the structure of the compound k2o is best described as a cubic closest packed array of oxide ions with the potassium
What is Le Chatelier's principle and explain what happens to the dynamic equilibrium of the system as the cyclohexene is distilled to the receiver flask
Each 5 ml teaspoon of extra maalox plus contains 450 mg of magnessium hydroxide and 500 mg of aluminum hydroxide. How many moles of hydronium ion are neutralized by one teaspoonful of extra strength maalox plus
What is the stoichiometric coefficient for oxygen when the following reaction is balanced using the smallest whole number coefficients?
what are possible reasons for the differences observed in conductivity for H3PO4 and H3BO3? Explain it please. B) Write out the dissociation steps for H3PO4 and H3BO3.
a mixture of 2- percent ammonia 55 percent hydrogen and 25 percent nitrogen by a volume 9.8 newton per square meter. what is partial pressure of ammonia?
The density of a sodium sulfate solution is 1.07 g/cm3. The solution is 8.00% sodium sulfate by mass. How many cm3 of the solution are needed to supply 4.28 g of sodium sulfate?
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