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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
What is the coefficient of static friction between the book and the tabletop? What is the coefficient of kinetic friction between the book and the tabletop?
Positive charge is distributed uniformly throughout a large insulating cylinder of radius R = 0.500 m. The charge per unit length in the cylindrical volume is lambda = 9.00×10-9 C/m. Calculate
The solubility of nitrogen gas at 25 degrees and a nitrogenpressure of 522 mmHg is 4.7 x 10-4 mol/L. What is the value of the Henry's Law constant in mol/L(atm)?
What is the speed of the student apporaching the wall? Use 340 m/s as the speed of sound in air.
A 1200-kg car accelerates from rest to 20m/s in 7.8 s, moving in a straight line with constant acceleration. (a) What is the net force acting on the car? (b) If the car then rounds a bend 85 m in ra
An aluminum can is cut into small pieces. A .74 gram sample of the aluminum "chips" is used to prepare potassium alum according to the procedure described in this experiment.
A mass of 12.96 gram of (NH4)2SO4(molar mass= 132.06g/mol) is dissolved in water. After the solutionis heated, 25.11grams of Al2(SO4)3 18H2O (molar mass = 666.36 g/mol) is added.
Calculate the gravitational force between the Sun and Jupiter. The mass of the Sun is 1.99×1030 kg. The mass of Jupiter is 19000×1023 kg. The distance between them is 77.8×1010 m.
How many liters of the antifreeze ethylene glycol would you add toa car radiator containing 6.50L of water if the coldest winter temperature is -26.0 degrees Celsius?
A person with a blackbelt in karate has a fist that has a mass of 0.58 kg. Starting from rest, this fist attains a velocity of 7.8 m/s in 0.22 s. What is the magnitude of the average net force appli
In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.4 at an angle of 15 below the horizontal. It is released 0.90 above the floor. Wha
The compound trans-2-chlorocyclohexanol reacts rapidly with NaOH to form an epoxide. The cis stereoisomer is relatively unreactive, and does not form an epoxide.