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An enzyme has a KM of 3 mM in the absence of a competitive inhibitor in a solution of 2 mM substrate and a Vmax of 15 nM/s. What concentration of a competitive inhibitor with Ki of 3 mM is required to achieve an initial velocity of 5 nM/s?
A syringe filled with air can be used to test the relationship between the temperature and the volume of a sample of gas. The syringe has a movable plunger that allows an enclosed sample of gas to be held at a constant external pressure, so the ga..
Draw and label the Crystal Field splitting diagram for the 3d atomic orbitals in an octahedral field
What is the pH of a solution that results from adding 25 mL of 0.50 M NaOH to 75 mL of 0.50 M CH3CO2H. (Ka of CH3CO2H = 1.8 E 10-5
The solubility of CO2 in water at 25°C and 1 atm is 0.034 mol/L. What is its solubility under atmospheric conditions? (The partial pressure of CO2 in air is 0.0003 atm.) Assume that CO2 obeys Henry's law.
Explain why is it significant to add the solution of bromine quickly as well as in one portion to the test tube containing the aromatic substrate
for a respiration rate of 18 breaths per minute, how many moles of oxygen per minute are absorbed by the body. assume the mole fraction of oxygen in air is 0.21. compare this result with example problem 1.1.
Calculate the heat of solution for sodium acetate when 35.0mL of water is in a calorimter and 1.5461g of sodium acetate is added. The initial temperature is 23.0 C and the final temperature is 24.8 C.
what is the purpose of placing a lead apron on a person who is receiving routine dental X-rays? d)why are the walls in a radiation lab built of thick concrete blocks
One series of lines of the hydrogen spectrum is caused by emission of energy accompanying the fall of an electron from outer shell to the fourth shell. The lines can be calculated using the Balmer-Rydberg equation
Write a balanced net ionic equation for the neutralization reaction and Tartaric acid,( C4H6O6) , has two acidic hydrogens.
Suppose you are given a 2.75 g sample of the orginal mixture. You isolated the pure metal from the other components and determined that the mass of the metal was 1.25 g. What is the percent by weight of the metal in the orginal sample
Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves
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