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Calculate the mass of vapour present in a room of volume 250 meter cube that contains air at a temperature of 23 degree centigrade on a day when the relative humidity is 53%.
When chlorine reacts with 2-methylpropane and replaces only one hydrogen with chlorine
a 200 gram sample of a large biomolecule was dissolved in 15 grams of carbon tetrachloride. the boiling point of this solution was determined to be 77.85 degees celcius. calculate the molar mass of the biomolecule.
Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
On treatment of Compound D with an alcoholic solution of silver ammonium hydroxide, a silver mirror was formed within a few minutes. Identify the hydrocarbon A and Compounds B-D.
As a food chemist for a major potato chip company, you are responsible for determining the salt content of new potato chip products for the packaging label.
If the total pressure is 1.8 atm, what is the partial pressure of ethanol?
How many moles of oxygen are needed for the complete combustion of 9.88* 10^21 molecules of hexane?
What is the minimum flow rate of water (? = 0.990 g/mL) required to scrub out 90.0% of the incoming NH3? What is the mole fraction of NH3 in the scrubbed waste gas stream?
How many grams of oxygen are required to completely burn 5.90g of C3H8 in the following unbalanced
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
Calculate the pH for 5 x 10-10 M HClO4. Please show work. The answer should come out to pH7 when auto-ionization of water is factored
Calculate the freezing point of an aqueous solution formed by dissolving 4.22 g of KCl in 25.00 mL of water. Kf for water is -1.86 degrees C/m. Assume the density of water
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