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An empty 100-mL measuring cylinder weighs 132.456 g. When filled with rice to the 100-mL mark it weighs 220.345 g. After water has been added to fill the spaces between the grains, the weight is 250.123 g. What is the density of the rice in g mL-1?
An ester can also be prepared by carrying out an SN2 reaction between a carboxylate ion (RCO2-) and the appropriate alkyl halide (R'-X). Is this approach possible for the synthesis of aspirin. Explain
Problem- A .2602 gram sample of an unknown monoprotic acid requires 12.23 ml of 0.1298 M NaOH to reach the end point. What is the molar mass of the acid
A hypothetical metal has a simple cubic unit cell and its atomic radius is 1.167 Å. Calculate the edge length of the unit cell. A hypothetical metal has a face-centered cubic unit cell and its atomic radius is 1.738
A 10.00 mL portion of a urine sample is titrated with 15.04 mL Hg(NO3)2 solution. In the standardization of the Hg(NO3)2 solution, 35.67 mL were consumed to titrate a solution containing 0.2045 g of NaCl (58.44 g/mol). Calculate the content of chl..
Presume that you are starting a research project to study a mammalian metalloenzyme that is 350 amino acids long. Describe what techniques you might use to obtain your protein for study.
Calculate the equilibrium concentration of H3O+ in the solution if the initial concentration of C6H5COOH is 6.1×10?2 M.
what are the boiling point and freezing point of a 2.47m solution of naphthalene in benzene? the boiling point and
The CNOG ion is very unstable and is the reason why the mercuric compound is explosive. On the other hand, mercury cyanate, Hg(NCO)2, is not explosive. The cyanate ion (NCOG) is a stable ion. Use resonance structures and electronegativities to exp..
What is the final state of the system after 26.0 kJ of energy is removed from 150.0 g of water at 1 atm. The water has an initial temperature of 20.0?C . Cs(ice) 2.092 J/g?C Cs(water) 4.184 J/g?C ?Hfus ice 6008 J/mol
A copper refinery produces a copper ingot weighing 75 kg. the density of the copper is 8.94 g/cm^3. if the copper is drawn into a wire whose dimeter is 8.250mm
How are the opposing pathways of glycolysis and gluconeogenesis prevented from extensive
Calculate the change in entropy (in J/K) when 81.8 g of water is heated from 27.9 ºC to 87.8 ºC at 1 atm. (The specific heat is 4.184 J/(g-K).)
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