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Why does the pink color of phenolphthalein fade away and is soda pop acidic. Why
If the pH of a solution is 4.2 (at 25 degrees C) what is the hydronium and hydroxide ion concentrations, and the pOH of the solution
Suppose a star experiences an outburst in which its surface temperature doubles but its average density, By what factors do the star's radius and luminosity change
Two satellites are in circular orbits around a planet that has radius 9.00*10^6 m. One satellite has mass 77.0kg , What is the orbital speed of this second satellite
A 0.150 M solution of an enantiomerically pure chiral compound D has an observed rotation of 0.12° in a 1-dm sample container. The molar mass of the compound is 135.0 g/mol. (a)What is specific
A 1480{\rm kg} car pulls a 320{\rm kg} trailer. The car exerts a horizontal force of 3900{\rm N} against the ground in order to accelerate. What force does the car exert on the trailer
One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas
A block with a weight of 7.7 N is at rest on a horizontal surface. What is the magnitude of the force of the block on the horizontal surface
A solenoid is 8.93 cm long, 1.56 cm in diameter, and has 310 turns. find the magnetic flux through one turn of the solenoid
A solenoid of length 3.06 cm and diameter 0.663 cm is wound with 170 turns per cm. what is the magnetic flux through one of the windings of the solenoid
One mole of an ideal gas at 25C and 1 bar is allowed to expand adiabatically against a constant external pressure of 1.00 bar from 1.00 dm^3 to 10.00 dm^3. Calculate the final temperature
A solenoid is made of 302 turns of wire, wrapped around a hollow cylinder of radius 1.25 cm, What is the self-inductance of the solenoid
A container is filled to the brim with 1.6 L of mercury at 20°C. As the temperature of the container and mercury is increased to 49°C, compute the linear expansion coefficient of the material
During an experiement, 225 mL of Wet H2 was collected over water at 29 Celcius, with a total pressure of 748 torr. How many grams of Zinc were consumed as a result
An object's temperature increases, and in so doing its radiation power increases by a factor of 2.00.find the ratio of the new temperature to the original temperature
One mole of a van der Waal's gas is compressed isothermally and reversibly from 20 dm^3 to 1 dm^3. a=.556 Pa mol^6/m; b=.064 dm^3/mol. Calculate w,q, and delta_U.
A 1 cm long section of the Achilles tendon stretches to 1.005 cm, What is the strain in this segment of tendon
A certain reaction has an equilibrium constant of 300 at 25 degrees celsius and 309 at 35 degrees celsius. What is deltaH^0 per mole for this reaction
A rifle shoots a 4.50g bullet out of its barrel. The bullet has a muzzle velocity of 965 m/s just as it leaves the barrel. For how long a time is the bullet in the barrel
In the process of recrystallization, sometimes, it's necessary to scratch the side of the flask with a glass rod. What does this do
In an experiment, a 1.5 kg lab cart moving to the right at 0.080 m/s collides with a 0.5kg lab cart moving to the right at 1.3 m/s. How fast is the 0.5 kg lab cart moving after the collision
A ball rolls horizontally off the edge of a tabletop that is 1.40 m high. What was its speed at the instant it left the table
Draw the structural formula of an alkane that has eight carbons and only primary hydrogens.
The potential energy U(r) between any two atoms, when given as a function of the distance between their centers, do the atoms behavemost like a simple harmonic oscillator
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 53° above the horizontal. how far is this point horizontally from the end of the ramp