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An alcohol solution contains 50.0 g of1-propanol (C3H7OH) and 155.0 g of ethanol (C2H5OH).Calculate the mass percent and the mole fraction of each alcohol.
Find the cost to operate one such string 24.0 h per day for the Christmas season (two weeks), using the rate $0.14/kWh.
Am infinetly long line charge having a uniform charge per unit length λ lies a distance d from point O. Determine the total electric flux through the surface of a sphere of radius R centerd a
Take the potential of the negative plate to be zero. If the potential halfway between the plates is then +4.0 V, what is the electric field in the region between the plates? (Take directly towards t
How many mL of 0.2 M sodium acetate should be added to 200 mLof 0.1 M acetic acid to make a buffer of pH 5? What will the total concentration of acetate be in the solution (acetate + aceticacid)?
The magnetic field inside a 4.0cm diameter superconducting solenoid varies sinusoidally between 8.0T and 12.0T at a freqency of 10Hz. a) What is the maximum electric field strength at a point 1.5cm
Calculate the boiling point of a solution containing 50.00g ofsodium phosphate dissolved in 175.0g of dihydrogen monoxide.
Two balls, of masses ma= 36 g and mb= 68 g are suspended from the horizontal on a string 30 cm. Ball a is pulled away from ball b at an angle of 60 degrees with the vertical and released. a) what i
Pure benzene has a freezing point of 5.45 C and a boiling point of80.2C. Its constants for freezing point depression and boilingpoint elevation are -5.07 C/m and +2.53 C/m .
What electric field strength and direction would allow the honeybee to hang suspended in the air?
A solid conducting sphere of radius 2.00 cm has a charge 10.90 µC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a c
Half way through grading last semester's final, your illustrious instructor got really depressed and decided that Barbancourt 5-Start would help.
An atomic mass unit has been defined as 1/12th the mass of an atom of C-12. Suppose one atomic mass unit was redefined as being equal to 1/36th mass of a C-12 atom.
The initial velocity of the kit is 14 m/s at an angle of 60° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the
What would be the partial pressure of all species if No andBr2 at an initial pressure of 0.30 atm, were allowed to come to equilibrium at this temperature?
When 0.100L of 2.0M potassium hydroxide and 0.100L of 2.0M nitricacid are mixed in a coffee-cup calorimeter, the temperatureincreases from 20.210C to 28.480C. Calculate the enthalpy change for the n
A 189 lb man eats an order of FrenchFries consuming 250 Cal of food energy. Afterwards he feels guiltyand decides to work off the excess calories by walking upsix flights of stairs 3.0 times.
A very dilute solution contains 116 mg of fructose (M=180.16 gmol-1) in 1.000 liter solution. it is placed in a semipermeablemembrane bladder, which is then suspended by a support in some purewater.
Caustic soda is 19.1m NaOH and is diluted for householduse. What is the household concentration if 10mL of the concentrated solution is diluted to 400mL?
What will be the percentage change in power output if the voltage drops to 105 ? Assume no change in resistance. How would the actual change in resistivity with temperature affect your answer?
Calculate the amount of methanol that you would use to recrystallize the sample. If the crystals arecollected at 25oC, what is the maximum possible recovery?
A charge of 40pC is distributed on an isolated spherical conductor that has a 4cm radius. Point a is 1cm from the center of the conductor and point b is 5cm from the center of the conductor. Determ
The elemental analysis of an organic solid extracted from gumarabic showed that it contained 40% C, 6.7% H, and 53.3% O. Asolution of 0.650 g of the solid in 27.8 g of the solvent diphenylgave a fre
The punter on a football team tries to kick a ball so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degree above the
Calculate the molality of commercial available HCl from the following data formula weight 36.465, density of the solution(g/ml) 1.19, weight % 37.2 and Molarity 12.1