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Explain Copper crystallizes in a face-centered cubic unit cell with an edge length of 362pm. Explain what is the radius of a copper atom in pico meters? Explain what is the density of copper in g/cm3?
On size-exclusion chromatogram you have three peaks (2.9, 3.5, and 4.8 min). Column dead volume is 12 mL, and flow rate 4 ml/min. Are your separation conditions fit for size-exclusion requirements? Explain why.
Explain nitrous acid, HNO2, is utilized in the synthesis of organic dye compounds, if the hydrogen ion concentration of a 0.125M solution is 7.5X10-3M, explain what is the ionization constant for the base
question the heat of vaporization of ccl2f2 is 289 jg.what mass of this substance must evaporate in order to freeze
Each of the following compounds exhibits a single 1H NMR peak. Approximately where would you expect each compound to absorb? a. cyclohexane b. acetone c. benzene d. glyoxal (ethandial) e. dichloromethane f. trimethylamine ((CH3)3N)
A 75.0 L steel tank at 20.0C contains acetylene gas (C2H2) at a pressure of 1.39 atm. Assuming ideal gas behavior, how many grams of acetylene are in the tank?
Suppose a sample of solid hydrogen is held under an external pressure of 0.030 atm and heated from 5 to 300 K. What phase change(s), if any, will occur?
The molar heat capacity of silver is 25.35J/mol °C. How much energy would it take to raise the temperature of 9.80 of silver by 17.4°C
525mL of 1.50M NaCl is added to a beaker containing 378mL of 2.22M AgNO3, resulting in the formation of AgCl precipitate.
Enzymes are proteins possessing catalytic activity. Proteases are a class of enzymes that catalyze the hydrolysis (i.e., cleavage by the addition of water) of the peptide bonds linking amino acids in proteins according to the following reaction:
Draw a heating curve (qualitative) starting with ice at -20 degrees C going to steam at 200 degrees C. Indicate the solid, liquid, and gas states, and the melting and boiling points.
Magnesium has three isotopes, Mg-24, Mg-25, and Mg-26. The percentage abundance of each in order is 78.70%, 10.13%, 11.17%.
Determine the stopping potential as a function of wavelength at 433.9, 404.7, 365.0, 312.5, 253.5 nm.
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