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A student placed a mixture of BaO and CaO in a 1.46 L flask containing carbon dioxide gas at 35.0 degrees celsius and 746 mmHg. After the reactions were complete, she found that the CO2 pressure had
A piston exhibits simple harmonic motion with an amplitude of .1m. If it passes through the center of its motion with a speed of .5m/s what is the period of oscillation?
You pull a 70 kg block up a 400 incline so that the tension of the rope is parallel to the incline. The block starts from rest and the incline has a coefficient of friction of 0.4. The tension is su
A solid mixture contains MgCl2 and NaCl. When 0.5000 gof this solid is dissolved in enough water to form 1.000 L ofsolution, the osmotic pressure at 25.0oC is observed tobe 0.3950 atm.
A car speeds along the curved exit ramp of a freeway. The radius of the curve is 78 m. A 76 kg passenger holds the arm rest of a car door with a 220 N force to keep from sliding across the front sea
Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?
A 15.00 kg block starts from rest at the top of a 25.0 m long 30.0° incline. Its kinetic energy at the bottom of the incline is 1837.5 J. How much work is done by friction?
Find the location of the center of mass of a nonuniform rod 0.44 m in length if its density varies linearly from 0.90 g/cm at one end to 5.35 g/cm at the other end. Specify the center-of-mass locati
Write the summation as an integral, and simplify the integral as much as possible. State explicitly the range of yourintegration variable. Evaluate the integral.
In a photoelectric effect apparatus, light of wavelength 650 nm illuminates a metal surface. The resulting current is stopped completely when - 0.4 V is applied to the anode. What is the maximum kin
A sample of CO2 gas has a mass of 0.2 kg. (Atomic mass of C = 12; of O = 16). It is originally at T = 450 K and V = 0.1 m3 . It undergoes a free expansion to twice its original volume in a chamber
"De-icing salt" is used to melt snow and ice on streets. the highway department of a small town is decideing whether to by NaClor CaCl2 for the job. The town can obtain NaCl for$0.28/kg. What is
An ideal gas is in an initial state of 35 C, 150 kPa and 0.2 m3. It undergoes a quasi-static isothermal expansion until its pressure is 95 kPa.
If 250 ft3/s of air at 122 degrees F and approximately atmospheric pressure is preheated for a combustion process to 932degrees F, what rate of heat transfer is required?
A parallel-plate capacitor is charged with 0.220 C. If the area of each of its plates is 0.620 m2, what is the electric field energy density between the plates?
A 1.50 mm-diameter glass bead is positively charged. The potential difference between a point 1.50 mm from the bead and a point 3.60 mm from the bead is 460V . Note: The given distances are measure
The electric field strength between the "plates" of this capacitor is 6.11×105 V/m. If the dielectric were replaced with a vacuum, what would the strength of this electric field become, assumin
Gasoline is delivered to a farmer for use in the farm's combines. Acylindrical storage tank with a circumference of 5.8 ft is used to store the gasoline until it isused. The farmer uses a yardstick
A Carnot engine operating between energy reservoirs at temperatures 300 K and 525 K produces a power output of 1040 W. What are each of the following?
Calculate the pH at the equivalence point for the titration of 0.20M aniline (C6H5NH2,kb=3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to aniline solu
A coin (floating in outer space) of mass m and radius R is initially spinning around the axis perpendicular to its plane, with angular speed w3.
The free end of the stick is pivoted on a pole and the sphere rolls on the ground without slipping with its center moving in a circle of radius R with frequency Ω. What is the normal force bet
A hydrogen atom undergoes an electronic transition from the n=4 tothe n=2 state. In the process the H atom emits a photon. This photon then strikes a cesium metal surface and ejects an electron.The
What if the track had been considerable off level? How much energy would have lost to work against gravity as M traveled a distance h down the track when the track slanted uphill at some angle theta
Human bodies are actually open systems, and the main mechanism ofheat loss is through the evaporation of water. What mass of watershould be evaporated each day to maintain constant temperature?