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How do you calculate the effective temperature of jupiter if the sun is its only source of heat given that jupiter is 7.8*10^8 km from the sun and has an albedo of 0.73.
If the earths average temperature is 288K,what fraction of the atmosphere absorbed infrared radiation? What is the temperature of this atmospheric layer?
Could you do anything in this experiment to improve your yield? How do you account for the change in mass of the copper wire? Where does the mass go to or come from?
How many moles of copper do you predict will be used up in the reaction? How many grams of copper? How does your prediction in question 4 compare to the actual amount of copper used up? How do you exp
A gaseous mixture containing 0.220 mol fraction of carbon tetrachloride (CCl4) and 0.780 mol fraction of dry air is initially at 60.0°C and 1127 mmHg.
A production facility heats various equipment using a network of heated air and water vapor lines. A boiler produces a 169.0 mol/hr stream consisting of 0.590 mol fraction of water and 0.410 mol fra
A 500 mg tablet of antacid (all 500mg is calcium carbonate) is put into 250 ml of 0.12M hydrochloric acid. What volume of gas is produced at STP and how many moles of excess H3O+ are left over?
A researcher suspects that the pressure gauge on a 49.9-L gas cylinder containing nitric oxide is broken. An empty gas cylinder weighs 135 lb. The weight of the partially full cylinder is 164.2 lb.
At high temperatures phosgene (COCl2) decomposes to give carbon monoxide CO and Cl2. In a typical experiment, 0.631 g of COCl2 is injected into a flask of volume 472 cc.
Once leaving the cylinder, a regulator reduces the pressure to 15.0 psig, and a valve allows 1.000 mL/s of ethylene at 25.0°C to flow into the reactor.
Blood cholesterol levels are generally expressed as milligrams of cholesterol per deciliter of blood. What is the approximate mass percent of cholesterol in a blood sample having a cholesterol level
If the propane and air streams enter the chamber at 25.0°C and 1.20 atm (absolute), and the products leave the chamber at 290.0°C and 2.90 atm (absolute), what is the volumetric flow rate of
A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 110g of solution. The reaction caused the temperature of the solution to rise from 21.0
Which mixture would not be expected to be homogeneous? pentanol and hexane, KBr and water, acetic acid and methanol, ethylene glycol and water, octane and heptane?
Grams and centimeters in the metric system have been defined so that the density of water at 3.98 C is exactly 1. At 20 C, the density of water is 0.9982 g/ml.
Write a differential mole balance on phosphoric acid and provide an initial condition. [Start by defining np (kmol) to be the total quantity of phosphoric acid in the tank at any time.]
In 2 solutions of equal volume and mass, but with solutes of different identities, we learned that the solution that has the solute with a lower molecular weight will have a higher bioling point bec
The land area of Greenland is 840,000 mi2 with 132,000 mi2 free of ice. The average thickness of ice is 5000 ft. The density of the ice is 0.917 g/ml. Calculate the mass of ice in tons. Please expl
You want to know the detergent composition of an extract of a shampoo. You spot the sample on a TLC plate and develop it in dichloromethane and observe a single spot at Rf 0.95.
If the melting point of the compound is unknown the melting point measurement could take an exceedingly long time if the rate of heating of 2C/min is followed over the entire range from room tempera
What gas escaped during the sodium bicarbonate washing? Write balanced equations for two reactions that took place during this operation.
Let us model a pi-electron in a tyrosine, by assuming it is a particle trapped in a 2-dimensional square box. As you should know, the maximum of absorption is at about 280nM.
Consider two aqueous solutions, A and B (which contain different solutes). Is it possible for solution A to have a greater concentration than solution B in terms of mass percent, but a smaller conce
A mole of hydrogen gas was found to have an average De Broglie's wavelength of 1A (10^-10m), the approximate length of the H-H bond. What temperature is the gas kept at?
Provide an expression for the relative probability of finding a population of particles in the box in the second excited state relative to the ground state at 10000K