Determine the molar mass of a compound
What is the molar mass of a compound that takes 1.45 times as long to effuse through a porous plug as it did for the same amount of XeF2 at the same temperature and pressure? Answer in units of g/mol.
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Contrast the government of Rome with medieval feudalism and that of the rising nation states in the seventeenth century.
Calculate the density, mole fraction, molarity, and molality of the solution. Assume water has a density of 1.00 g/cm3.
How many times faster is the speed you found in (a) than the speeds of our fastest current spacecraft (around 50,000 km/hr)?
Write the acid/base equilibrium reaction (net-ionic) for the major species present in an aqueous solution of each of the following substances. use H3O+ as the acidic species
Describe the effects of the ECB infestations you used. Were all corn varieties equally effective at controlling the ECB? How do you know?
Chlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. How long will it take to produce 1.25 kg of chlorine if the current is 5.00 102 A?
A dolphin in 25°C sea water emits a sound directly toward the bottom of the ocean 135 m below. How much time passes before it hears an echo? (The speed of sound in sea water is 1530 m/s.)
A 3.00-rm L flask is filled with gaseous ammonia, rm NH_3. The gas pressure measured at 22.0, ^{circ}C is 2.05 atm. Assuming ideal gas behavior, how many grams of ammonia are in the flask?
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