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When it is at the bottom of the circle, the ball has a speed of 13.7m/s. Calculate the magnitude of the tension in the cable when the mass is at the bottom of the circle.
An electrolytic cell is set up with Cd(s) in Cd(NO3)2(aq) and Zn(s) in Zn(NO3)2 (aq).Initially both electrodes weigh 5.00g. After running the cell for some time the electrode in the one half-cell we
Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
A bicycle and its rider together has a mass of 75 kg. What power output of the rider is required to maintain a constant speed of 3.6 m/s (about 8.1 mph) up a 5.0% grade (a road that rises 5.0 m for
A 45.0 g Super Ball traveling at 30.0 m/s bounces off a brick wall and rebounds at 16.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 4.50 ms, what is the
What is the enthalpy change when 40.1 mL of 0.400 M sulfuric acid reacts with 19.5 mL of 0.133 M potassium hydroxide?
What mass of lithium is required to react completely with 57.6 mL of N2 gas at STP?
We want to launch the package in such a way that it will never come back, and when it is very far from the asteroid it will be traveling with speed 225 m/s. We have a large and powerful spring whose
Why is R2 important for a reliable standard curve? What would you consider to be an acceptable correlation>0.85?>0.95?>0.985?.
Calcualte the density of oxygen gas at 75.0 Celsius and 867mm Hg.
calculate the mass and volume of 150 mmol of 2-metylcyclohexanol as well as the theoretical and percent yields if you were to perform a dehydration of 150 mmol of 2-methylcyclohexanol and you obtain
What volume and mass of steam at 100degrees celsius and 760 torr would release the same amount of energy as heat during condensation as 65.5 cm(cubed) of liquid water would release during freezing?
A coordination complex in which the ligands exhibit an octahedral geometry about the central metal ion has the formula, [CoCl2(NH3)4]. How many geometric isomers of this compound should exist?
A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, dete
The letters TC and TD on volumetric glassware indicate whether it is calibrated to contain or to deliver a given volume.
Calculate the pH of stock sodium acetate solution, given the concentration is 0.9727 mol/L.
A sample of natural gas at 670mmHg contains 85% methane 10%ethane and 5.0% propane. What are the partial pressures of each gas in this mixture?
Compare the pH vs. volume curve for HCl and acetic acid. Discuss any differences in the shape of the curves. Compare these two curves to one of the curves prepared for the unknown.
What concentration of NH3 is needed to lower the Cu2+(aq) to 6.4 x 10-14 M in a solution that was originally 1.43 x 10-4 M in Cu2+(aq)? Assume that there is no volume change as NH3 is bubbled throug
0.791 g acetone reacted with 1.044g benzaldhyde to produce experimentally 1.00 g dibenzalacetone. Calculate the theoretical and percentage yield
calculate the final temperature of a mixture of 130.0g of ice initially at -22.5 Celsius and 310.0g of water initially at 80.5 Celsius.
A 50.0 g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.50 ms, what is the
Calculate the pH of the stock acetic acid solution if [Acetic Acid] = 1.012 mol/L. pKa of acetic acid = 4.75.
What mass of sucrose should be combined with 464 g of water to make a solution with an osmotic pressure of 8.35 atm at 320 K? (Assume the density of the solution to be equal to the density of the so
Which of the following correctly lists these four types of interactions/forces according to increasing strength (weakest to strongest)?