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Problem- The hydronium ion concentration of a 0.010 M acetic acid solution is 4.2 x 10-4 M. What is the pH of the solution?
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An excess of zinc metal reacts with 500. mL of 12M hydrochloric acid and produces 48.8 L of hydrogen gas at 20 degrees C and 750 torr. a)Determine the mass of zinc metal reacted b)Determine the percent yield for the reaction
1. calculate the freezing point and the boiling point of a solution prepared by dissolving 5.0 g of kclin 550 g of
Oxalic acid (H2C2O4) is a useful primary standard for standardizing solutions such as potassium permanganate (KMnO4). In a particular standardization experiment 29.00g of oxalic acid, is titrated with 243.00mL of permangante solution
A gas-filled balloon having a volume of 2.50 L at 1.2 bar and 25°C is allowed to rise to the stratosphere (about 30 km above the surface of Earth), where the temperature and pressure are -23°C and 3.00 10-3 atm, respectively. Calculate the final v..
A pressure-measuring device indicates that the blood pressure of a normal person oscillates between 120mm Hg (at the peak of the heartbeat) and 80mm Hg (between heartbeats).
The atoms in Barium metal are arranged in a body-centered cubic unit cell. Calculate the radius of a Barium atom if the density of barium is 3.5 g/cm3
1401g sample of a purified carbonate was dissolved in 50ml of a .1140 M HCl and boiled to eliminate CO2. Back titration of the excess HCl required 24.21ml of .09802M NaOH. Identify the carbonate.
for the reaction 2nog2h2g-gtn2g the rate law is ratekno22h2 where the rate constant is 130 m-2s-1. evaluate the rate
Define the reaction is second order in C4H6. Suppose the rate constant is 4.0 x 10^-2 M^-1s^-1, and the initial concentration of C4H6 is 0.080 M, Define how long will it take the concentration of C4H6 to reach 0.400M. Also how long are the 1st and..
Helum Gas at a Pressure of 8.2 atm expands in volume from 39.6L to 88.3 L. The temperature is held at 303 K. Compute the work done in Joules
The plate is 10.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the water. (Assume nearly normal incidence of light rays.)
1 which of the following is evidence for a chemical reaction?a heating purple iodine crystals produces a purple gas.b
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