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What is the pH of a 0.175 mol/L solution of sodium acetate, CH3COONa, at 25oC? (pKa=4.74 at 25oC for CH3COOH.) Give your answer accurate to two decimal places
If the rock falls from the cliff into a pool containing 7.00m3 of water at 16.3%u2218C, what is the final temperature of the rock-water system
The solubility of magnesium fluoride, MgF2, in water is 0.016 g/L. What is the solubility (in grams per liter) of magnesium fluoride in 0.013 M sodium fluoride, NaF
A Ping-Pong ball with mass 1.5 g is attached by a thread to the bottom of a beaker. Determine the diameter of the ball
List 2 major factors that will affect the accuracy of your data and how you can improve the experiment
Calculate the [OH-] in 0.050 M potassium fluoride, KF The answer choices are: A. 8.3 × 10-7 M B. 4.7 × 10-7 M C. 6.2 × 10-7 M D. 1.4 × 10-6 M E. 2.2 × 10-6 M
Calculate the pH of 0.050 M Fe(NO3)3 solution. The hydrated Fe3+ ion is [Fe(OH2)6]3+. For [Fe(OH2)6]3+, Ka = 4.0 × 10-3
two automobiles are equipped with the same single-frequency horn. when one is at rest, What is the frequency the horns emit
Read carefully, 0.1M HCl is added into a mixture of 25mL of water and 25mL of Ca(OH)2. For the end point to be reached 1.3mL of 0.1M HCl is added into the mixture. How would I calculate the molarity
a sound wave traveling in 26 degrees C air has a pressure amplitude of 0.500 Pa. (assume that the density of air is 1.29 kg/m^3). What is the intensity of the wave
At t=0, a 734 g mass at rest on the end of a horizontal spring (k= 113N/m) is struck by a hammer, Determine the amplitude, maximum acceleration and total energy
Salicyclic acid forms a polymeric byproduct as a result of this reaction. It is a small percentage of the final product mixture, but it can be visualized via TLC (the small spot just above the aspir
What relationship did Galileo discover about a ball%u2019s acceleration, What acceleration occurs when the plane is vertical
An airplane, capable of flying at a speed of 500 miles/hr in still air (i.e., the airplane can fly with a speed of 500 miles/he relative to the air), How long does it take the plane to fly over the
Classify which reaction is single replacement, double replacement, decomposition, combination and combustion. SiO2+HF--->sIf+H2O C7H10N+O2--->CO2+H2O+NO2 KO2+CO2--->K2CO3+O2 C4H10+Cl2+O2--
A police car is traveling east at 39.5 m/s along a straight road, overtaking a car ahead of it moving east at 32.0 m/s. What is the wavelength in front of the police car
A ball is thrown with a speed of 15 m/s at a 78 degree angle. will it make it over a 10 m wall? How far from the wall does the ball need to be thrown
Hail comes straight down at a mass rate of m/%u0394t = 0.030 kg/s and an initial velocity of v0 = -10 m/s, calculate the force exerted by the hail on the roof
A certain lightbulb filament when hot has a resistance of205 %u03A9. What current is flowing through the bulb at that time
A simple camera lens with focal object length fO= 3 cm perfectly focuses the the image of an object on a photographic film located a distance 14 cm away from the lens. What is the new magnification
A cylindrical glass cup has mass m and height h. When the cup is full, it can hold a mass of water equal to 6m. Find the height of water in the cup
Calculate the molarity of the hydroxide ion (OH-) for this final mixture (51.5mL) Please do not tell me to do Y while leaving out X and Z
Why would a mixture of salts be more difficult to identify than a single salt? For example, copper sulfate, barium nitrate and nickel bromide versus only nickel bromide.
Use the Boltzmann equation to calculate the excited-state and ground-state population ratio for HCl (g*/g0=1) at room temperature (25 oC). The frequency of the absorption from the ground to the exci
An archeological specimen containing 3.4g of carbon has an activity of 0.33 Bq. How old (in years) is the specimen