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When 5.00 mL of 0.1032 M NaOH were added to 0.1123 g of aniline (FM = 89.093) in 100.00 mL of 0.10 M KNO3, the measured pH was 9.57. Use activity coefficents to fin pK2 for aniline. Consider the ionic strength of the solution to be 0.10 M and consider each ionic form of aniline to have an activity coefficient of 0.77.
Determine the mean and 90% confidence interval for the average fluoride concentration in this sample.
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines
A strong broad IR stretching band at about 3500 Cm-1 along with several narrow aromatic bands around 1600 and 1500 Cm-1 suggests the presence of what class compound?
Blood pH can be altered by changes in breathing. When a person is hyperventilating, they are breathing in rapid, deep breaths.
In the bromination of ethane (C2H6) reaction, one wants to produce 10.0 g of C2H5Br product. How many grams of C2H6 would be needed to react with excess Br2.
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results fromt he trypsinm chymotrypsin, and cyanogen bromide treatments to suggest the amino acid sequence.
Write down the full Hamiltonian for a He atom moving freely in space, i.e., there is no external potential. b) Now assume there is no repulsion between the electrons
Assuming this particle is a single crystal, how many unit cells are lined up across the diameter of the particle? d. Calculate the mass of the particle. e. Approximately how many atoms does this particle contain?
How much heat is required to warm 211 g of ice from -45.9°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C?
column of air with a pressure of 1.57 *10^5 Pa and an area of 1.15 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column?
The pH of a bicarbonate-carbonic acid buffer is 8.00. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
How much heat in kilojoules is evolved in converting 1.50 mole of steam at 150 deg celsiys to ice at -35.0 deg. celsius? The heat capacity of steam is 1.84 J/g. deg celsius.
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