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A proton (mass 1.67 x 10^27kg) is moving at 1.55 x 10^6m/s directly toward a stationary helium nucleus (mass 6.64 x 10^27kg). what is the helium's velocity
Eugenol can also be isolated from cloves using extraction with CO2. discuss the advantages and disadvantages of distillation versus CO2 extraction.
Amongst the following pairs, predict which one would be the best nucleophile and justify your answer.i) CH3OH vs. CH3O-
A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 7.14 103 W. How much energy does it extract from the outside air
How much energy in kJ is needed to heat 5.00g of ice from -10.0oC to 30.0oC? The heat of fusion of water is 6.01 kJ/mol and the molar heat capacity is 36.6 J/(oK.mol) for ice and 75.3 J/(oK.mol) for
4.48 L of an ideal gas is initially at a temperature of 303oC. While the volume is kept constant, Determine the new temperature of the gas
What is the concentration of [Cl?] in a solution of 10 mL of 12 M HCl when 6 mL of water is added
A liquid with a density of 1680 kg/m3 flows through a horizontal pipe with varying cross section. Determine the pressure in the second section
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. determine how fast will the disk be turning
a feed mixture of ethanol and water is 40 mole $ ethanol. the feed is at 200 degrees C and is at a high enough pressure that it is a liquid. It is input into the column through a valve, where it fla
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
Compound A is C4H9Cl and shows two 13C NMR resonances. Compound B is an isomer of compound A; it shows four 13C NMR resonances, and in the spin-coupled mode the resonance farthest downfield is a dou
A 2.0m length of metal wire is connected to a 1.5 V battery, and a current of 5.0mA flows through it. What is the diameter of the wire
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 75%. What is the warmer temperature
A Carnot engine extracts 550 J of heat from a high-temperature reservoir during each cycle, compute the efficiency of the engine
The following results were obtained for the determination of sulfur in a coal sample. The average for 4 trials was 1.94 %S with a standard deviation of 0.04 %S. Based on these data, report the 95% c
A sealed 88 m3 tank is filled with 4000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. find The final pressure of the gas
A sealed 37 m3 tank is filled with 6000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. find The initial pressure of the gas
Magnesium can be obtained by precipitating Mg^2+ as Mg(OH)2(s). The Ksp of Mg(OH)2 is 6.0*10^-10. The magnesium ion concentration is 0.059M. If a sample of solution is treated so its [OH-] concentra
A sealed 62 m3 tank is filled with 6000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. find the mass density of the oxygen gas
a 0.1kg ball moving at 10 m/s collides with a 1 kg block that is initially at rest. Find the ratio of the kinetic energies of the two objects after collision
An iron ore was found to contain 92.0% pyrite (fool's gold). Pyrite has the formula FeS2and is 46.5% iron. How many grams of iron are there in 65.8 grams of iron ore
A hoop and a disk, both of 0.36- m radius and 4.0- kg mass, are released from the top of an inclined plane 3.1 m high and 8.9 m long. What is the speed of the disk
How many atoms are there in a cubic centimeter of a solid and what is the velocity of the motorist relative to the police car and what is the velocity of the police car relative to the motorist?