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The active site of an enzyme is a small portion of the enzyme molecule. What is the function of the rest of the large molecule?
Use of fossil fuels - Should we be burning the raw materials for medicine and polymers? Where will we be in 50 years on this issue?
undergo an isothermal compression until the pressure of the system is four times the original pressure. The process may occur in two ways:
the fact that the relative reactivity of C-H bonds of an alkane for free-radical chain halogenation is tertiary > secondary > primary?
Suppose a black-body chamber is constructed from 55.8 g (one mole) of iron and heated to 500 K. Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole.
The temperature is increased to 45 degree celcius then determine what is the pressure in the cylinder
A compound is found to have a molar mass of 598 g/mol. If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25°C, what is the osmotic pressure of the resulting solution?
A proton in a linear accelerator has a de Broglie wavelength of 143 pm. What is the speed of the proton?
calculate the temperature of an isothermal flash drum required to vaporize 40% of a liquid mixture of 60mol% isopropanol and 40mol% n-butanol
A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is
The value for Ksp for manganese(II) hydroxide, Mn(OH)2, is 1.6 x 10^-13. Calculate the molar solubility of Mn(OH)2 in a solution that contains 0.020 M NaOH.
Maleic acid contains 41.4% carbon, 3.47% hydrogen, and 55.1% oxygen by mass. A 0.030-mol sample of this compound weighs 2.61 g.
What is the exact alkalinity of a water that contains 0.6580 mg/L of bicarbonate, as the ion, at a pH of 5.66? No carbonate is present.
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