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There are several derivatives of 13C or 14C glucose that are available for sale from radiochemical supply companies. These labeled compounds are quite useful for metabolic tracer studies. To demonstrate how these are used.
a) Initiate with glucose labeled at C1. Find out where the label is in pyruvate product.
b) Repeat this exercise with the label at position C2 of glucose.
c) Repeat this exercise with the label at position C3 of glucose.
What is the pH of a buffer solution that is 0.255 M in lactic acid and 0.333 M in sodium lactate? The Ka of lactic acid is 1.4 × 10-4.
So he used this in his calculation. Actually it boiled at 102.*c during experiment. Did this assumption cause his calculated specific heat to be too high, too low or not affect?
a urine sample contains 46.5mgl-1 of ethanol. the density of ethanol is 0.79gcm-3. what is the concentration expressed
The Hydrogen gas is collected over water at 23 degrees c and on atmospheric pressure of 756 mm hg defines what would be the particle pressure of the hydrogen gas
A 0.291 mol sample of PCl5(g) is injected into an empty 4.35 L reaction vessel held at 250 °C. Calculate the concentrations of PCl5(g) and PCl3(g) at equilibrium.
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
A student titrated 20.0 mL of 0.410M HCL with 0.320M NaOH. Find the pH, [H3O+], and [OH-] when 21.50mL of titrant has been added.
A student determine the melting point of a substance to be 85.2 degrees Celsius. If accepted value is 53.7 degrees Celsius , the percent error in her determination was?
lithium is the least dense metal known (density: 0.53 g/cm^3) what is the volume occupied by 8.00 x10^3g of lithium.
Calorimetry is a method used to measure changes in enthalpy, or heat, that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters
What is the heat change in J associated with 37 g of gaseous methanol at 89 oC changing to liquid at -64 oC?
The molecules CO2 and SCL2 are both of the general molecular type AB2, but one is polar and one is not. Which molecule is polar?
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