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A bu?er is created by mixing together 22 mL of 3.3 M sodium formate and 12 mL of 3 M formic acid. What is the capacity of the bu?er if 0.2 M NaOH is added?
Draw the structures of the products of saponification of glyceryl trilaurate by NaOH
Two students are on a balcony 18.0 m above the street. One student throws a ball (ball 1) vertically downward at 10.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically up
After equilibrium is achieved, the pressure of NO2 is 1.56 atm. Assuming constant total volume (not constant pressure), what is the equilibrium partial pressure of the N2O4?
if 2.50 mL of vinegar requires 3.49 mL of 0.0960 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.00-qt sample of this vinegar?
How is the color of the solution at equilibrium related to the extent of reaction for the example reactions given?
A 150.0 g sample of metal at 80 c is added to 1500.0g of h2o at 20 c. the temperature rises to 23.3 c. assuming that the calorimeter is a perfect insulator, what is the specific heat of the metal?
If 3.8 rm kcal is released by combustion of each gram of glucose, how many kilocalories are released by the combustion of 1.40 mol of glucose?
The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon?
The following equilibrium constants were determined at 1123 K. Write the equilibrium constant expression KP for the following reaction.
Write the equation for the neutralization of hydrochloric acid and calcium hydroxide. How many milliliters of the HCl solution are needed to neutralize the Ca(OH)2.
Which of the following are factors that contribute to the large negative standard free energy change for the reaction ATP + H2O ? ADP + Pi?
At the end of the firing period, the craft has velocity components of vx = 3715 m/s and vy = 4144 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle wit
A balloon containing 34.5 L of a gas at room temperature (25.0 oC) is heated to 73.5 oC. What is the volume of the balloon at this new temperature.
The addition of the protein avidin prevented the complete oxidation of 11:0 even in the presence of CO2, although it had no effect on 16:0 oxidation. Explain these observations.
Calculate the entropy change when 1.86 g of H2 reacts with O2 according to the reaction 2H2(g) + O2(g) -> 2H2O(l) at 298 K and 1 atm pressure. The stan- dard molar enthalpy of formation of H2O(l)
What masses of nitrogen and water could produced from 45.og of ammonia?
The coefficient of static friction between the picture and the wall is 0.660. What is the minimum amount of pressing force that must be used?
P-Methylphenyl acetate reacts with imidazole to produce p-methylphenol and acetyl imidazole. The rate constants for this reaction at a series of temperatures are given in the table.
Suppose the waste heat could be used to heat homes during the winter instead of being discharged into the ocean. A typical American house requires an average 20;rm kW for heating. How many homes cou
What is the net change in the number of protons across the mitochondrial membrane for each set of two electrons transferred through Complexes I, III, and IV, respectively?
If the initial concentration of N2O4 is 0.50 M, and no NO2 is initially present, what is the equilibrium concentration of N2O4?
a solution of acetic acid hc2h3o2 on a laboratory shelf was of undetermined concentration. If the pH of the solution was found to be 2.68, what was the concentration of the acetic acid?
You analyze several different cofactors of the electron transport chain and find FMN = reduced, Cytochrome bL = oxidized Cytochrome bH = oxidized and Cytochrome a = oxidized. Where did the inhibitor
A painter of mass 70.0 kg stands on a platform of mass 75.0 kg and pulls on two ropes which hang over pulleys. He pulls each rope with a force of 750.0 N. Assuming a coordinate system where +y is up