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Calculate the molar mass of benzoic acid in the solution based on the boiling point elevation. (kb for CCl4 is 5.03 C/m)
What would be the pressure of the gas sample if the gas is compressed at a constant tempterature to a volume of 5.44 L?
A 1.00 mol sample of A2 and 1.00 sample of B2 are placed into an evacuated 1.00L container at 500K and allowed to reach equlibrium. At equilibrium concentration of A2 is equal to 0.800M. Calculate
A worker pushes horizontally on a 35 kg crate with a force of magnitude 110 N. The coefficient of static friction between the crate and the floor is 0.37.
By how much will the temperature rise when mg of phenol, C6H5OH (s), is burned in the calorimeter under the same conditions? (ΔcH (C14H10 ,s) = -7061 kJ/mol).
Pittsburgh, Pennsylvania and Miami, Florida lie approx. on the same meridian. Pittsburgh has a latitude of 40.5 degrees North and Miami has latituded of 25.5 degrees North. Find the distance between
The buffer is diluted by adding enough water to make 1.50 L of solution. What is the pH of the diluted buffer?
Question: A ball is tossed so that it bounces off the ground, rises to a height of 1.30 m, and then hits the ground again 1.70 m away from the first bounce. A) How long is the ball in the air betwee
What is the angle of the velocity vector with respect to the ground right after the first bounce?
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge
What concentration of HCl will have a pH of 3.0? And if sufficient NaOH is added to the HCl the change the pH to 4.0 what fraction of HCl will be titrated?
Find (a) the acceleration of the puck, (b) the speed of the puck after the 1.10 s, (c) the horizontal distance from the table edge to where the puck impacts the deck.
A mixture of the compounds aluminum oxide and magnesium chloride contains 39.0 g of aluminum oxide and is 49.9 % by mass magnesium chloride. Calculate the mass (g) magnesium chloride in the mixture.
Calibration and collection of equilibrium data are different experiment. Why could you use the calibration curve for getting equilibrium data?
Light containing wavelengths of 400 nm, 500 nm, and 650 nm is incident from air on a block of crown glass at an angle of 25.0°. Calculate the angle of refraction in each case to verify your answer
Determine the freezing point depression of a solution that contains 30.7 g glycerin (C3H8O3, molar mass = 92.09 g/mol) in 376 mL of water.
Once ignited a small rocket motor on a space craft exerts a constant force of 10 N for 7.80 s. During the burn the rocket causes the 100-kg craft to accelerate uniformly. Determine that acceleration
At 500 degrees celsius, cyclopropane rearranges to propene. How many minutes does it take for the concentration of cyclopropane to drop to 0.01 M?
Assuming the final temperature of the horseshoe plus water plus steam is 100°C (_ 373 K), how much of the water is converted into steam?
What is the average molecular weight of the mixture? What would be the mass (kg) of a sample containing 25.0kmol of ethyl acetate?
What must the minimum muzzle velocity of the dart have been for the hunter to hit the monkey before it reached the ground?
Two subway stops are separated by 1100 m. If a subway train accelerates at + 1.2m/s2 from rest through the first half of the distance and decelerates at - 1.2m/s2 through the second half, what are (a)
If a closed vessel is charged with 88000.0 Pa of nitric oxide and allowed to react with excess liquid bromine, what is the equilibrium partial pressure of the product?
How does the energy of two photons corresponding to a wavelength of 451 nm (blue light) compare with the energy of three photons corresponding to a wavelength of 704 nm (red light)?
A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 53.0° above the horizontal at a point 24.0 meters from the base of the building wall. The ball ta