Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Solved Assignments
Asked Questions
Answered Questions
Question: A 0.100 M solution of a certain weak acid, HA, is found to have a pH of 2.45. Calculate the % ionization for the acid. Enter the answer as a decimal number with 3 decimal places. Do not en
The addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in the product becoming clear (transparent). What causes the clearing?
A 2.30 L sample of neon at 5.35 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.00 atm after the neon is added, what was the original pressure (in atm) of
A certain light bulb is rated at 60 W when operating at the RMS voltage of 120 V. What is the peak voltage applied across the bulb?
If a carboxylic acid ester is exposed to an environment such as sweaty skin (acidic aqueous environment) for quite a while, what can happen? What would their fruity odors change to?
Phenolphthalein has a color change over the pH range of 8.2 to 10.0; methyl orange has a color change over the pH range of 3.2 to 4.4 although the phenolphthalein indicator is commonly used for neu
Starting with the Michaelis-Menten equation given on the first page, answer the following questions: a) Write out the Michaelis-Menten model for an enzyme catalyzed reaction.
Why are some fruits sweet and some sour, whereas others have no specific taste? How does the ripening of fruit affect the process of seed dispersal?
In the Grignard synthesis of triphenylmethanol experiment, the procedure states that the additions of bromobenzene, methyl benzoate and hydrochloric acids must be done slowly. What might if these we
Strychnine, C12H22N2O2, is a weak base. An aqueous solution of 0.0515 M strychnine solution has a pH of 10.48. What is the Kb for strychnine based on these measurements?
Compare in your mind 3 different liquids: pure ethanol, a 50% ethanol/water mixture and a 50 % ethanol/methanol mixture. Rank these three liquids in order of increasing Ptotal when each liquid is in
Question: A sucrose (table sugar, molar mass 342 g/mol) solution was made by dissolving 68.2g of sucrose in 800 g of water. What is the freezing point of this solution if Kf of water is 1.86 degrees
Derive the maximum number of independent Killing vector fields that can exist in a spacetime of dimension N . Compare the number of Killing vectors that exist in some of the metrics.
Calculate the elapsed time on Lucy's clock through this period of Susan's flight and compare this to those of Susan and Jane. Provide an explanation of the various elapsed times, and why they diff
Will the temperature decrease shift the equilibrium toward the reactants or products for a reaction characterized by a positive reaction enthalpy and positive reaction entropy?
Derive the equations of motion of this observer, and in particular derive equations that give the proper time, τ , of the observer and the radial coordinate of the observe, r.
When a pure solvent freezes the temperature remains constant till all liquid is frozen (thus the freezing point). When the solvent in a solution freezes the temperature keeps decreasing. Explain why
Calculate elapsed time on the clocks of each of Jane and Susan, the difference in the times on the two clocks, and the maximum value of Jane's distance from the centre of the spherical object.
Poly(propylene) is made of one kind of monomer. Give the two monomers used to make nylon 6,6. Why are two monomers needed to make nylon 6,6 while only one is needed to make poly (propylene)?
Question: 153 grams of metal have a specific heat of 0.061 cal/g C and at a temp of 99.1C is added to 85.0 grams of water at 23.5C What will be the final temp of the water when equilibrium is reache
Question: A typical aspirin tablet contains 324mg aspirin(C9O4H8), a monoprotic acid Ka=2.8*10^-4. A monoprotic acid donates a single proton. If you dissolve two aspirin tablets in a 300 mL glass of
An air puck bounces back and forth between two parallel walls (always traveling perpendicular to the walls). Is the puck executing simple harmonic motion? Why or why not?
Question: A water carbonating plant operates by providing carbon dioxide at 5.0 atm. Estimate the molar concentration of CO2 in carbonated water it produces at 25 ºC.
"We know that vmax = Aω. So if we know the position of a mass on a spring we can always get its velocity just by multiplying the position by ω." Point out the flaw in this student's a
Which one of the following alkyl halides gives the highest ratio of substitution to elimination on treatment with sodium ethoxide in ethanol, and why?