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Peanuts and peanut oil are organic materials and burn in air. Howmany burning peanuts does it take to provide the energy to boil acup of water (250 mL of water)? To solve this problem, we assumeeach peanut, with an average mass of 0.73 g is 49% peanut oil and21% starch; the remainder is non combustible. We further assumepeanut oil is palmitic acid, , with an enthalpy of formation of -848.4kJ/mol. Starch is a long chain of units, each unit having an enthalpyof formation of -960 kJ.
What NaCl concentration results when 214 mL of an 0.680 M NaCl solution is mixed with 592 mL of a 0.230 M NaCl solution
A 17.5 g sample of C2H6 (Mm = 30.07 g I mol) was maintained in a 98.6 L vessel at 290.6 K. It was compressed isothermally and reversibly until its volume had reached 12.5 L.
Write net Bronsted equations and determine the equilibrium constants for the acid-base reactions that occur when aqueous solutions of the following are mixed.
For some enzyme reactions (for example, the hydrolysis of cAMP by phosphodiesterase in vertebrate retinal cones)the enzyme is present in large quantities,so that e0/s0 is not a small number.Fortunately,there is an alternate derivation of the Micha..
the bright-red color of highway safety flares comes from strontium ions in salts such as srno32nbspand srco3. burning a
What mass of HCl is contained in 30.0ml of a solution solution which is 37.2 mass% HCl has a density of 1.19g/ml.
Lead is below tin but above copper. Suppose that you wanted to remove lead ions from a solutiion to make it less poisonous. Would you ass a strip of tin or copper to the solution
At what temperature will nitrogen gas (N2) have the same density as helium gas (He) at 27 degrees C and constant pressure
It takes 54.0 J to raise the temperature of an 10.3g piece of unknown metal from 13.0C to 25.0 C. What is the specific heat for the metal?
a problem frequently encountered in the dehydration of alcohols is the rearrangement to form a more stable carbocation. Explain why this is not a problem in the synthesis of cyclohexene
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to man made factor like pollution.
What you observed upon the addition of NH3(aq) to magnesium chloride solution / what species are present in the test tube?and what happened when we add NH4Cl?
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