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When 26.0 mL of 0.675 M H2SO4 is added to 26.0 mL of 1.35 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water: d = 1.00 g/mL and c = 4.184 J/g×K.) Delta H per mole of H2SO4 reacted: .......kJ/mol Delta H per mole of KOH reacted: ...... kJ/mol
Calculate the enthalpy change for converting 1.00 mol of ice at -50.0°C to water at 70.0°C in kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O , Hfus = 6.01 kJ/mol, and Hvap = 40.67..
The "lead" in lead pencils is actually almost pure carbon, and the mass of a period mark made by a lead pencil is about 0.0001g How many carbon atom's are in the period?
Photochemical chlorination of 2,2,4-trimethylpentane gives four isomeric monochlorides. Write the structural formulas for these for isomers. 1. Isomer with a primary chloride and the methyls at the lowest numbering
sketch the qualitative molecular orbital diagram for the complexes.
What error will this cause in their determination of the amount of iron in the table?
Calculate the number of moles in each of the following quantities.a) atoms of each element in 3.35 moles of aspirin(C9H8O4)
If globally averaged dry and wet deposition rates for SO_2 are 1.0kg/ha/yr and 5.0kg/ha/yr, respectively, then what is the lifetime of SO_2 due to the combined processes of wet and dry deposition? Assume temperature and pressure are 20*C and 1atm
The element boron has two naturally occurring isotopes with masses of 10.0129 amu and 11.0093 amu. What is the percent abundance of the second isotope?
Calculate the pressure (in torr) in the container if all of the methanol is vaporized. (Assume the ideal gas law, PV = nRT).
What is the formula for a bicarbonate salt using X to represent any +1 charged cation. Same question for the formula for a carbonate salt.
What are some of the characteristics that we want to observe? What might be your initial hypothesis? How would you set up an experiment to test your hypothesis?
The pH of blood is 7.35. It is maintained in part by the buffer system composed of carbonic acid (H2CO3) and the bicarbonate (hydrogen carbonate, HCO3-) ion. What is the ratio of [bicarbonate]/[carbonic acid] at this pH
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