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Why are the bond angles of methane, ammonia, and water different for each even though the electron domain geometry is the same for each?
Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used.
Find the expression for the reversible pressure-volume work of an isothermal van der Waals gas with a constant number of moles (integrate the expression fully from Vi to Vf)
Determine how many milligrams of H 2 O are present in sample If the freezing point of 100.0 grams of sample of 2-methyl-2-propanol =24.59C, (2methyl-2propanol has Kf=4.68Ckg/mol
When a glow stick is placed in a freezer, its chemiluminescence lasts a significant time longer. How might this come about?
A solid brick of dry ice (CO2) weighs 0.75 kg. Once the brick has fully sublimated into CO2 gas, what would be the volume of solid brick at STP.
Which expression represents the percent by mass of nitrogen in NH4NO3. A) 14 g N/80 g NH NO 100% B) 28 g N/80 g NH NO 100% C) 80 g NH NO /14 g N 100% D) 80 g NH NO /28 g N 100%
In a gas mixture, the partial pressures are argon 425 , neon 60 , and nitrogen 125 .What is the total pressure exerted by the gas mixture?
Why should you never heat a cooled system, and how does this rule apply to distillation
You wish to extract an organic compound from an aqueous phase into an organic layer (3 to 6 extractions with a separatory funnel). With regard to minimizing the number of transfer steps,
Treatment of 2-cyclohexenone with HCN/KCN yeilds a saturated keto nitrile rather than an unsaturated cyanohydrin. Show the structure of the product, and propose a mechanism for the reaction.
Is it possible for the activation energy of a reaction to be negative? Explain your conclusion and provide a molecular level explanation.
Estimate change in free energy for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous
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