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H(fusion)=842.2 cal/mol at mp 84.45K; H(vaporization)=4487 cal/mol at bp 231.04K; S=9.95 eu for heating solid propane from 0K to 85.45K; S=21.06 eu for heating liquid propane from 85.45K to 231.04K.
Chlorine gas will react with nitrogen gas to yield NCl(g). At 500 K, I mix 1.00 g of chlorine and 1.00 g of nitrogen in a 2 L flash and allow them to react until equilibrium is reached.
The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 2.45 x 10-5 T. What is the acceleration of an electron due to this field comp
A large evacuated tank whose volume is 10,000ft3 is to be filled with carbon dioxide gas at atmospheric pressure (14.7psia (lbf/in2). The CO2 is stored in cylinders of volume 2 ft2 at a pressure of
Now, consider both shells are fired at an angle greater than 45 degrees with respect to the horizontal. Remember that enemy ship A is closer than enemy ship B A) Which shell is launched with a great
A 14.1 g sample of CaCl2 is dissolved in 125 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming th
A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at
"Suppose a reversible heat pump transfers heat from the outdoors at 0 degrees C to a room at 20 degrees Celsius. For each Joule of work input to the heat pump, how much heat will be deposited in th
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 14.5 rad/s2. Find the speed of a point on the blade 2.15 m from the axis of rotation when the blade has
A 2.00L sample of O2 (g) was collected in a flexible container, like a balloon, over water at 25 degrees celcius and an atmostpheric pressure of 785 torr.
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.440 m. Find the final speed v of the sphere's center of mass.
A mercury thermometer consists of a small glass bulb containing mercury metal connected to a glass capillary tube. when the volume of mercury increases, the mercury moves up the capillary.
Iron is biolagically important in the transport of oxygen by red blood cells from the lungs to the various organs of the body. In the blood of an adult human, there are approximately 2.60 x 10^13 re
A 1.90 cm X 1.90 cm parallel-plate capacitor has a 2.40mm spacing. The electric field strength inside the capacitor is 1.50×10^5 V/m. A) What is the potential difference across the capacitor?
The total pressure of a mixture of oxygen and hydrogen is 1.4 bar. The mixture is ignited and the water removed. The remaining is pure hydrogen and exerts a pressure of 0.30 bar when measured at teh
Calculate the freezing-point depression (Kf = 31.8K-kg/mol), the relative vapor-pressure lowering, the osmotic pressure of the solution at 25 C, and the molecular weight of the substance.
In one experiment, 0.865 mol of NO is mixed with 0.502 mol of O2. Determine which of the two reactants is a limiting reactant. Calculate also the no. of moles of NO2 produced.
Twenty grams of a solute is added to 100g of water at 25 degrees C. The vapor pressure of pure water is 23.76mm; the vapor pressure of the solution is 22.41mm.
An infinitely long line of charge has a linear charge density of 3.50×10^-12 C/m . A proton is at distance 13.0 cm from the line and is moving directly toward the line with speed 2200 m/s . Ho
Calculate the work done by the spring when it is stretched from its equilibrium position to 0.056m past its equilibrium. Answer in units of mJ.
Calculate the tensional force inside Io, as a result of Jupiter's gravitation.
The edge of a cube consist of equal resistors of resistance R, which are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance?
One contains 0.2 mol Pb(CH3COO)2 , the second contains 0.1 mol Na2S , and the third contains 0.1 mol CaCl2 . what is the ionic equation for the precipitation reaction or reactions that occur. and Wh
What is the total mechanical energy present at the height given? What is its speed just as it left the ground? What is its maximum height?
A superconductor wire has a critical temperature of 90K. If the wire is at 77K, and an electromotive force of 6.0V is attached to the wire, how much energy is lost to heat per second if a current of