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How does firing the gun on a uranium-238 atom change it? If the gun fires and "hits" the nucleus, what happens?
When an alpha particle leaves the nucleus, is the atom still an atom of the element "polonium" (atomic number 84), or has the atom changed to a new element? If so, what element?
When heated gently with methanol, compound B, C5H8O4, is obtained. Compound B has IR absorptions at 2500-3000 (broad), 1730, and 1701 cm-1, and its proton NMR spectrum in D2O consists of resonances at d 2.7
What volumes of these two solutions must you mix in order to obtain 200 mL of your required buffer
How many grams of Na2SO4 (FM 142.02) should be added to how many grams of sulfuric acid (FM 98.08) to give 1.35 L of buffer with pH 2.80 and a total sulfur (= SO42- + HSO4- + H2SO4) concentration of 0.200 M
Initially, only H2S is present at a pressure of 0.204 atm in a closed container. What is the total pressure in the container at equilibrium?
Problem- Prepare a separation scheme for Al3+, Ba2+. Cu2+, and Mn2+. Include equations for all reactions in each step of the scheme.
calculate the molarity and the molality of an nh3 solution made up of 27.5 g of nh3 in 70.0 g of water. the density of
What is the mRNA sequence for the following segment of DNA: GACTATCCCATAGAG Based upon the mRNA sequence, what is the peptide sequence
On or after the Bohr model of the hydrogen atom we can conclude that the energy necessary to excite an electron from n = 2 to n = 3 is the energy to excite an electron from n = 3 to n = 4.
how many carbons does the sample contain
Show that the two reactions can be summed to give the overall oxidation of SO2 by O2 to give SO3. Why do we consider NO2 a catalyst and not an intermediate in this reaction?
Draw the appropriate titration curve for the tripeptide Met-Lys-Val, starting at pH 1 and ending at pH 12, On the curve label the pKas and the pI
Calculate the amount of heat evolved in the production of Titanium Oxide if 500 g of titanium (IV) chloride react according to the equation below. TiCl4(g) + H2O(g) yeilds TiO2(s) + HCl(g)
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