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The sun is a sphere with an estimated mass of 2.0X10^30kg. If the radius of the sun is 7.0X10^5km, what is the average density of the sun in units of grams per cubic centimeter? The volume of a sphere is (4/3)?^3.
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
Determine the moles of H2O lost. E. Write the empirical formula for hydrated alum, based on your experiment.
The average molecular weight of the protein by gel permeation is 525000 g mass/g mol. Calculate the mole fraction of each component in solution.
Calculate the partial pressure (in atmospheres) of each gas, Assuming that the total pressure of the gases is 1.34atm{rm atm} and that their mole ratio is 94 : 4.0 : 1.5 : 0.50,
If the speed limit is 75 mph, could the driver of the car reasonably evade a speeding ticket by invoking the Heisenberg uncertainty principle?
Determine How much Na2EDTA x 2 H2O must be weighed to form exactly two litres of 0.0500 M solution? FW=372.24
Based on the Hume-Rothery Rules, speculate on the possible driving forces behind the tendency for ordering in this system.
Is PH3 polar or nonpolar, and why? Some sources say it's polar because of the lone pair. Others say it's nonpolar
the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule?
The standard enthalpy of formation of carbon monoxide is more esothermic than the sum of the standard enthalpies of formation of methane and water.
what tempreture must 0.040 moles of water vapor be heated in a 500ml flask before the pressure in the flask becomes 2 atm.
Explain why p-nitrophenol is a stronger acid than phenol itself. P-methoxyphenol and acidity
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