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1. Cyclohexane, C6H12 has a density of 0.7785g/ml 20 degree Celsius. What would be the volume of cyclohexane vapor formed at 100 degree Celsius and 1atm when 1.00ml of liquid is vaporized? Howdoes your value compare with the volume of the flask you used?
2. Why should the flask be immersed in boiling water as much aspossible? What effect will it have in determining the molecularweight? Explain.
What mass of HCl gas must be added to 1.00L of a buffer solution that contains [acetic acid]= 2.0M and [acetate]= 1.0M
Using a device similar to a mass spectrometer, a sample of an ancient wooden object was found to have a ratio
If toluene(density 0.87) were used to extract ethylene bromohydrin (density 2.41) from an aqueous solution.
When the one ore lead (ii) sulfide burns in ixygen, the products are lead (ii) oxide and sulfur dioxide A. How many grams of oxygen are required to react with 0.126 mole lead (ii) sulfide?
The Ka for boric acid is 7.3 x 10-10. What is the pKa of boric acid?
Calculate the work of expansion of the gas in joules (1 J = 9.87 10-3 atm·L). Assume all the energy is used to do work.
Calculate the molar solubility of lead thiocyanate in .900M KSCN ,when the Pb(SCN)2 has a Ksp value =2.00X10^-5, Calculate the molar solubility of MX (Ksp rate =1.27X10^-36) in pure water.
What is the molarity of a solution that is 7.00% by mass magnesium sulfate and has a density of 1.071.
A toothpaste contains 0.24 % by mass sodium fluoride, NaF and 0.30 % by mass of triclosan, C12H7Cl3O2. The mass of one tube of toothpaste is 119 g.
Describe Alkene Products, When tert-pentyl bromide is treated with 80% ethanol, the amounts of alkene products indicated below are detected on analysis.
what is the lewis structure and molecular geometry of pernitrate and carbonate ion?
Nitric oxide has a density = 1.782 g/L at the temperature of 12.64 degree celsius and pressure of 670.7 mm Hg determine the mass percent of Sulfur dioxide?
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