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You want to sail from Liverpool, England to Buenos Ares, Argentina. You are going to prepare your ship with food, supplies, animals, and of course beer. Based on what you know about currents, atmospheric circulation, and the weather in the areas you will have to sail through, what kind of ship will you choose, what kinds of supplies/animals do you bring, and how long do you anticipate your voyage taking? Be specific and use specific examples of the kinds of winds, currents, gyres, and temperatures (and whatever else you will need to provide to justify your decisions) you will encounter.
How many moles of HCl must be added to 1.0 L of 1.0 M NH3(aq) to make a buffer with a pH of 9.00? (pKa of NH4^+ = 9.25)
What osmotic pressure would develop across the membrane if the temperature is 26.0 degrees Celcius?
Suppose that a fully charged lead-acid battery contains 1.50L of 5.00M H2SO4. What will be the concentration of H2SO4 in the battery after 3.40A of current is drawn from the battery for 4.50 hours?
calculate w for the following reactions that occur at 298k and 1 atm pressure, CO2(g) + NaOH(s) -> NaHCO3(s) and 3O2(g) -> 2O3(g)
If a sample of Al2(SO4)3 is found to contain 863 mol of Al3+ ions how many moles of Al2(SO4)3 formula units are present?
Sodium nitrate was added to 2.0 L of water at 25 °C to produce a saturated solution. The solution was then heated to 80 °C. Calculate the mass of lead nitrate that had to be added to produce a saturated solution at that higher temperature.
Determine the end value of n for an electron transition in a hydrogen atom if the electron starts in n=4 and the atom emits a photon of light with a wavelength of 486 nm.
Calculate the energy (J) of the photon emitted when an electron in the hydrogen atom falls from n=6 to n=1. Use 2.178 x 10-18 J for the constant in the Bohr equation.
Calculate Kc2 for the following dimerization: 2NO2(g) -> N2O4(g), knowing that Kc = 2.24 for the decomposition written as half N2O4 -> NO2
She weighed an empty 4.3 L bulb, then filled it with the gas at 1.60atm and 23.0 C and weighed it again. The difference in mass was 7.9g . Identify the gas.
A 0.456 gram sample of an unknown monoprotic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
If you had a stoppered flask with basic luminol and then opened it to the air, why would the chemiluminescence be more pronounced than with the flask stoppered? Why is the chemiluminescence even more pronounced with the ferricyanide/hydrogen perox..
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