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10g of H2O2 impure sample when reacted with KI (solution) produced 0.5g iodine.What is percentage purity of H2O2?(AI=127,AK=39)
you have a pure sample of 2-pentanol but discover that it does not rotate plane polarized light. the measurement of
Determine a large cube of ice floating in seawater. The specific gravities of ice as well as seawater are 0.92 and 1.025 respectively. If a 10 cm high portion of the cube expands above the surface of the water, find out the height of the ice block..
A mixture of gases contains 10.30g of N2 , 1.79g of H2 , and 8.15g of NH3. The total pressure of the mixture is 1.95 atm. What is the partial pressure of N2
A water solution contains molecule Z molecular weight 230 and NaCl. The solution is ionized with ESI method, as well as injected to a mass analyzer. In the collected mass spectrum what m/z peaks (value) might you expect to observe
What is the wavelength in micrometers of a photon emitted from a Hydrogen electron relaxing from the
Calculate the pH during the titration of 40 mL of 0.1M HCL with 0.1M NaOH solution after the following additions of base:
Why is it important to not look directly at the flame of burning magnesium should the metal ignite during this experiment?
A reaction mixture initially containing 0.520 M H2S and 0.520 M SO2 was found to contain 1.0 x 10 -3. A second reaction mixture at the same temperature initially contains 0.245 and 0.335. calculate the equilibrium concentration of H2O in the secon..
Calculate the grams of potassium hydrogen phthalate required to react with approximately 25 mL of 0.1 M NaOH
Question- Draw (with structures, cofactors, co-enzymes, enzyme name, etc) the step(s) or pathway needed for activation of oleate (cis- ?9-octadecenoate or 18:1(cis-?9)) for entry into fatty acid ?-oxidation
Calculate the equilibrium constant (Keq) for the reaction of equimolar amounts of acetophenone and sodium hydroxide to generate the enolate.
HCFC-123 has been proposed as a substance for CFC-11. Explain how would you expect the following environmental properties to compare
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