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The physical separation of crude petroleum into fractions is based on boiling point differences among components present
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL of solution. How many mL of the drug should the patient receive?
If you mix 50mL of 0.34M HCN with 100mL of 0.17M KOH what is the pH of the resulting solution. (Ka=4.0 x 10^-10)
How many molecules of ethanol are present in 125mL of ethanol? The density of ethanol is 0.789g/cm^3.
You dissolve 650.0 g of sugar (C12H22O11) in 726 mL of water. The density of wat is 1.00 g/mL.
Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n = 4 and the atom emits a photon of light with a wavelength of 486 nm.
The density of a 23.0% by mass ethylene glycol (C_2 H_6O_2) solution in water is 1.03 g/mL. What is the molarity of the solution?
A carbonated beverage is made by saturating water with carbon dioxide at 0 C and a pressure of 3.0 atm. The bottle is then opened at room temperature (25 C), and comes to equilibrium with air in the room containing carbon dioxide CO2(PCO2=3.4x10?4..
Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 12.0 torr at 35C. The vapor pressure of pure ethanol at 35C is 1.00x10^2 torr.
the solution has an osmotic pressure of 4.18mm Hg at 25C,what is the molar mass of new protein?
Consider a linear string of five hydrogen atoms, H^5. Determine the net overlap for each molecular orbital and classify it as bonding, nonbonding, or anti-bonding.
If the pressure exerted by ozone, O3, 3.0x10-3 atm and the temperature is 247 K , how many ozone molecules are in a liter.
Octane is a liquid component of gasoline. Given the following vapor pressures of octane at various temperatures,estimate the boiling point of octane in Leadville, Colorado, where the atmospheric pressure is 496 mmHg.
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