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Water has a density that is 13.6 times less than that of mercury. If an undersea vessel descends to 1.5 km, how much pressure does water exert in atm?
After all of theSO2 has been removed, the sample occupies a volume of23.5L at a temperature of 29 degrees Celsius and a pressure of 715torr. Determine the partial pressure of both CO2and SO2&nb
A gas bubble forms inside a vat containing a hot liquid. If the bubble is originally at 68 degrees Celsius and a pressure of 1.6 atm with a volume of 5.8 mL.
Consider a container of volume 5.0dm3 that is divided into two compartments of equal size. In the left compartment there is nitrogen at 1.0 atm and 25oC; in the right compartment there is hydroge
The rate constant ,k, for a given reaction was determined at a number of temperatures. a graph of log k versus the reciprocal of the kelvin temperature yielded a straight line with a slope of -250k.
We want 1 liter of 0.1M NaCl and we have 4M stock solution. How much of 4M solution and how much dH2O will we measure out for this dilution.
Calculate the pH of a solution prepared by mixing 15.0 mL of 0.50 M NaOH and 30.0 mL of 0.50 M benzoic acid solution. (Benzoic acid is monoprotic; its dissociatio constant is 6.5 X 10^-5.)
How many grams of an organic compound (molecular mass 75.0) must be dissolved in 500.0 grams of acetic acid to lower the freezing point of the solution to 0.00degrees C?
If the freezing point ofa solution containing 0.258 grams of a substance dissolved in 40grams of benzene is 5.20 deg C, what is the molecular mass of the substance?
What are the three major types of intermolecular in pure covalent bonds? What are the relative strengths of these forces? How do they influence boiling points/melting points and solubility in any so
Calculate the theoretical yield of meso-hydrobenzoin if 46 mg sodium borohydride were the limiting reagent. Provide answer to the nearest mg.
What nucleophile could be used to react with butyl iodide to prepare the following compound? If your answer is a metal salt,omit the metal and draw the compound as an anion.
Each vile has .8 millimoles of solute/liter in 100 microliters of solvent. How many viles do you need to add to a beaker of 100 ml of solvent to have a concentration of 10 micromoles of solute/liter
When 25.0 mL of 0.640 M H2SO4 is addedto 25.0 mL of 1.28 M KOH in a coffee-cup calorimeter at23.50°C, the temperature rises to 30.17°C. CalculateΔH of this
A syringe contains 0.65moles of He gas that occupy 750.0 mL. What volume (in mL) of gas will the syringe hold if 0.35 moles of Ne is added?
Calculate the heat of decomposition for this process at constant pressure and 25°C. (Look up the standard enthalpy of formation of the reactant and products in the table;ΔH°f(BaCO3(s))
What would happen to a reaction mixture in an iodine clockreaction experiment involving the mixture of starch, NaHO3 and KIO3 if sulfuric acid were added? Explain.
Describe the dynamic equilibrium that exists in the two water tanks. Explain how LeChatelier's principle applies when the faucet on the right tank is opened.
An aqueous solution at 25C has a H+concentration of 4.0 * 10^-2 molar. What is the OH- concentration in the same solution, in moles per liter?
Describe 3 different ways you could make an acetic acid / acetatebuffer with acetic acid, sodium acetate, deionized water, asolution of hydrochloric acid, and a solution of sodium hydroxide.
Suppose you wanted to make a pH = 4.25 buffer. What would be the best acid/base system acetic acid/acetate or lactic acid/lactate?The Ka of lactic acid is 8.32 x 10-4. Thoroughly explain your reason
Assume that 50.0 mL of 0.100 M HCl was added to 125 mL of 0.100 MSodium Acetate. Is the resulting solution a buffer? Why or why not?Calculate the pH of the resulting solution. The Ka for acetic acid
What happens to the gravitational force between two objects if their masses do not change but the distance between them becomes four times as much?
A certain noble gas compound contains 68.8 percent Kr and 31.2 percent F by mass. Its density at STP is 5.44 g/L. What is the molecular formula of the compound?
What will happen to the gravitational force between two objects if one of the objects gains 50% in mass while the mass of the other object does not change? Assume the the distance between the two ob