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The Tropical Temperatures Problem: Think of the temperature at each point on the equator of the earth at a particular time (time does not change). (a) Suppose a random point somewhere on the equator is chosen and its temperature recorded. Is there any reason to believe there must be another point on the equator where the temperature is exactly the same? (b) Is there any reason to believe there are two points somewhere on the equator where the temperatures are exactly the same? (c) Is there any reason to believe there are two diametrically opposite points on the equator of the earth where the temperatures are exactly the same? Find at least two ways to think about the problem and arrive at a solution.
what is the density of a block of marble that occupies 285 centimeters cubed and has a mass of 636 grams? answer in units of g/centimeters cubed.
Draw the mechanism for the reaction of Cl2 and 3-ethylpentane with light (there should be three different chloroalkane products in addition to HCl).
Compound A has a solubility of 18 grams per 100. grams of water at 25*C. Cooling a saturated 200. gram solution of a compound A from 84*C to 25*c results in a precipitation of 22 grams of the compound. Calculate the solubility of compound A at 84 ..
Consider 2 Al + 6 HCl → 2 AlCl3 + 3 H2 , the reaction of Al with HCl to produce hydrogen gas. This reaction has a yield of 82.5 percent. How much HCl are needed to produce 14.0 L of H2 at 351 K and 1.11 atm
Determine the linear and volume shrinkages that occur during the drying and sintering of a gel containing 5 vol% solids if the dried gel and the sintered gel have a solids content (relative density) of 50% and 100%, respectively
What mass of silver is needed to absorb 50.0 cal of heat if the tempature of the sample rises from 24 c to 36.4 c Specific heat of silver
Determine the pH of the acid solution before the titration begins and the pH at the equivalence point when 50.0 mL of the NaOH has been added. The Ka of HF is 7.2*10^-4
The blood buffer system is made up of H2CO3 and HCO3. Describe with the use of equations how this system responds to added H3O and to added OH.
what is the relevance of half filled and completely filled orbitals in ionisation enthalphy ditermination.
A student weighed a fuel cup for a bomb calorimetry experiment and obtained 10.3729 g. She then added a benzoic acid pellet and reweighed, finding 11.2872 g
Nalorphine (C19H21NO3), a relative morphine, is used to combat withdrawl symptoms in narcotics users. How many grams of a 0.0036 molality aqueous solution of nalorphine are needed to obtain a dose of 2.51mg
What is the approximate H-O H bond angle in ice, where H-O is the covalent bond and O H is the hydrogen bond
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