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A 120 pound woman working in an office consumes about 2200 kcal/day, whereas the same woman climbing a mountain needs 3400 kcal/day. Express these numbers in terms of joules per second per kilogram of body mass ( = Watts per kilogram). Which consumes more power (watts), the office worker or a 100 W light bulb?
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S. H2SO4 is a stronger acid than H2SeO4 because S is more electro..
If 17.2 mL of 0.800 M hydrochloric acid solution are required to neutralize 5.00 mL of a household NH3 solution, determine the molar concentration of the NH3,ammonia?
A gas in a sealed container has a pressure of 125 kPa at a tempurature of 30.0 degrees celcius. If the pressure in the container is increased to 201 k Pa, what is the new tempurature?
seperate two compounds efficiently, what alternatives would one consider to effect clean separation by distillation?
Archeologists can determine the age of artifacts made of wood or bone by measuring the amount of the radioactive slope 14C present in the object. The amount of isolope decreases in a first-ordrr process.
If 43.2 ml of 0.105 M KMnO4 were required to reach the endpoint of a 14.8g bleach sample, what was the perrcentage of H2O2 in the sample?
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral? Show your work.
If an unknown crystalline organic compound has a heat of melting that is 8.605 kJ/mole and a melting point of 250.6 C
In the Hofmann Degradation of amines an amine is exhaustively methylated with Methyl Iodide and the resultant compound treated with Silver Hydroxide and heated. An alkene is formed which is not the Saytzeff product.
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
calculate the number of moles of magnetic iron oxide produced.
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