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How are DNA oligonucleotides chemically synthesized?
What kind of structure is an example for the description of a DNA oligonucleotide?
what molecule would give the following mass spec data? m/z =15, 29, 43, 57 provide the dominate peaks in the spectrum. the m/z =57 (m-29) is the base peak. and the mz = 43 and 29 ions are also abundent.
Describe and explain the possible effect on your results of the following experimental errors or variations. In each case specify the component(s) whose percentage(s) would be too high or too low.
A homeowner uses 4.00 x 10^3 m^3 of natural gas in a year to heat a home. Assume that natural gas is all methane, CH4, and that methane is a perfect gas for the conditions of this problem, which are 1.00 atm and 20 C. What is the mass of gas used
the common pain relievers asprin c9h8o4 acetaminophen c8h9no2 and naproxen sodium c14h13o3na are all available in
what is the molar mass of the protein? A solution of 7.50 mg of a small protein in 5.00 ml of aqueous solution has an osmotic pressure of 6.80 torr at 23.1 degrees celcius.
The concentration of iodine in sea water is 60 parts per billion by mass. If one presume that the iodine exists in the form of iodide anions, define what is the molarity of iodide in sea water. The density of sea water is 1.025 g/mL
The mass spectrum of an organic compound shows the relative abundance of M to be 34.29% and M+1 to be 8.901%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound. Natural abundance: 12C is 98..
What mass of sucrose should be combined with 461g of water to make a solution with an osmotic pressure of 8.80 atm at 280 K
Calculate the pH of a solution prepared by dissolving 0.30 g of BaO in enough water to make 0.800 L of solution.
What mass of C4H6 in grams is consumed in the reaction below when 39.8 grams O2 (g) are also consumed? C4H6 (g) + O2 (g) ' CO2 (g) + H2O (g) (not balanced)
Calculate the change in pH when 3.00 mL of 0.100 M HCl(aq) is added to 100.0 mL of a buffer solution that is 0.100 M in NH3(aq) and 0.100 M in NH4Cl(aq).
when 12.3 g of an unknown non-volatile non-electrolyte x was dissolved in 100. g of methanol the vapor pressure of the
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