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Calculate the concentration in mg/L a solution that wasprepare by adding 3.00 mL of a 3.85*10-4 stock solution of Allura redto a 50.00 mL volumetric flask and then filling to the mark with DIwater.
Two points charges attract each other with an electric force of magnitud F. If one charge is reduced to one third its original value and the distance between the charges is doubled, what is the resu
A bucket filled with water has a mass if 54 kg and is hanging from a rope that is wound around a 0.050 m radius stationary cylinder. If the cylinder does not rotate and the bucket hangs straight dow
The superball is now replaced with a clay ball that has the same mass and is dropped from the same height. What would be the average force exerted on the clay ball?
0.22 litre of an idealmonatomic gas (Cv = 3R/2) initially at 12 deg C and 1.7 atmpressure undergo an expansion against a constant external pressureof 1.01 atm, and do 2.3 kJ of work.
What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You will e
53.576 g Magnesium Sulfate di hydrate are dissolved in 250.00 mL of1.50 M Barium nitrate solution to produce BaSO4 precipitate. How many grams of barium sulfate were formed after the reaction?
If all of the atoms in a penny were to form a very thin coating on another object, a monolayer that is one atom thick with all atomstouching their neighbor atom , estimate the area(in squaremeters)
A 6cm diameter horizontal pipe gradually narrows to 4cm. Whenwater flows throught this pipe at a certain rate, the guagepressure in these two sections is 32.0kPa and 24kPa respectively. What is the
In a 5.00 km race one runner runs at a steady 12.0km/h and another runs at 14.5 km/h. How long does the faster runner have to wait at the finish line to see the slower runner cross?
The solubility product constant for A(IO3)2is 1.55x10^-6. What volume (in mL) of 5.29x10^-2 MS2O32- would be required totitrate a 1.250x10^1 mL sample of the saturated solution ofA(IO3)2?
A woman walks 250m in the direction 300 east of north, then 175m directly east. Find (a) the magnitude and (b) the angle of her displacement from the starting point. (c) Find the distance she walks.
To determine the solubility product constant (Ksp) at 50oC forNi(IO3)2, a chemist prepares a saturated solution of the salt at this temperature.
A pump is required to lift a mass of 820kg of water per minute from a well of depth 14.7 m and eject it with a speed of 17.3m/s . a-How much work is done per minute in lifting the water
It goes like this : "A 20.0g piece of aluminum at 0.0 degree Celsius is dropped into a beaker of water. The temperature of the water drops from 90.0 degrees Celsius to 75.0 degrees Celsius.
A jewler wishes to make solid gold cylindrical charms with a heightof 2.0cm and a radius of 5.25mm. Gold has a density of 19300kg/m3 and is $1095 per oz. The volume of a cylinder isπr2h. How much
The coefficient of kinetic friction between the ramp and the incline is 0.254. The suitcase travels a distance 4.20m along the ramp. a-Calculate the work done on the suitcase by the force
45.0g og magnesium carbonate is added to water to prepare a 250.0mlsolution. 15.0ml of this solution has 50.0ml of water added. what is the concentration of magnesium carbonate in the second soluti
At a certain temperature 15.0 moles of nitrogen gas and7.00 moles of hydrogen gas are placed in a 20.0 L glass vessel.When equilibrium is reached, 3.00 moles of ammonia gas arefound.
Are the interactive forces between propanol and watermolecules weaker than, stronger than, or equal to the interactive forces between the pure substance? Explain.
Find the components of the velocity and the speed of the ball when it reaches the wall:
If the coefficient of static friction between the glider and the track is = 0.65, what is the maximum initial speed that the glider can be given and still remain at rest after it stops instantaneous
A sample of benzene,C6H6, which contains a total of 5.50 mol of carbon Calculate the number of molecules present in each of the following samples.
A factory worker pushes a 30.2kg crate a distance of 4.5m along a level floor at constant velocity by pushing downward at an angle of 29 below the horizontal. The coefficient of kinetic friction be
A 1280- car and a 2250- pickup truck approach a curve on the expressway that has a radius of 204 . a) At what angle should the highway engineer bank this curve so that vehicles traveling at 59.1 can