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A sytrofoam cup calorimeter is calibrated by adding heat to the water in it with an electrical heater. When 1350J of heat is added the temperature of the calorimeter raises by 3.5 C. When 1.0 g of NaOH is dissolved in this same calorimeter the temperature raises by 1.6 C. Calculate the calorimeter constant and enthalpy for one mole of NaOH.
Therefore aspartame will have an isoelectric point at a pH between the pKa values of these functional groups. Find the values for these two groups of aspartic acid and calculate a predicted pI value for aspartame.
Calculate the minimum pH needed to precipitate Mn(OH)2 so completely that the concentration of Mn2+ is less than 1 Microgram per liter
8. The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
For the reaction below, which equation represents the rate of reaction. 6CH2O + 4NH3 (CH2)6N4 + 6H2O
considering the given equation ch4 2o2 co2 2h2o in which methane reacts with oxygen to form carbon dioxide and water
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
For a given transfer of energy, a greater change in disorder occurs when the temperature is high.
How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 30.6 moles of water vapor? Express your answer with the appropriate units.
When aluminum crystalizes, it forms face-centered cubic cells. The atomic radius of an Al atom is 143. Caluculate the density of metallic aluminum.
Calculate the theoretical yield of C_2H_5Cl when 127 g of C_2H_6 reacts with 250 g of Cl_2, assuming that C_2H_6 and Cl_2 react only to form C_2H_5Cl and HCl.
125g of sodium oxide and carbon dioxide gas. if the reaction occurs at 784 torr and 32.5 c. what volume of carbon
the reaction of peroxydisulfate ion s2o82- with iodide ion i-is s2o82-aq 3i-aq 2so42-aq i3-aqfrom the following data
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