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aBenzene, toluene, and CCl4 are fed to a tank. The mixture is 20% benzene by volume. A densitometer gives the density of the mixed stream to be 1.1 g/mL. What are the mass fractions of all three species?
The outdoor concentration of radon is 1 pCi/L. Develop a mass balance for this problem and estimate the steady-state radon concentration in the crawl space (in pCi/L).
Strontium-90 is one of the products of the fission of uranium-235. This strontium isotope is radioactive, with a half-life of 28.1 yr.
When a monosaccharide reacts to give the pyranose form from its open-chain form, how many distinct pyranose forms are possible?
Given the concentration of either hydrogen ion or hydroxide ion, use the ion product constant of water to calculate the concentration of the other ion at 298K.
A first order reaction has an activation energy of 65.7 kJ/mol and a frequency factor (Arrhenius constant) of 2.36 x 1013 sec -1. Calculate the rate constant at 18 oC
A certain sample of the mineral galena weighs 12.4 and has a volume of 1.64 mL. What is the density of galena?
How many grams of F- must be added to a cylindrical water reservoir having a diameter of 8.88 × 102 m and a depth of 78.88 m? (b) How many grams of sodium fluoride, NaF, contain this much fluoride?
Write balanced molecular equations for all of the chemical reactions involved in the copper cycle experiment. There are eight of them. (Note that four reactions are descibed in the recovery
flask shaken until the solution was uniform. A sample of 25.0 mL of this glucose solution was diluted to 0.500 ml then determine how many grams of C6H12O6 are in 100 mL of the final solution?
The solubility of nitrogen gas in water at 0 degree celcius and 1.0 atm is 23.54 mL per liter of the solution. (a) Calculate the Henry Law constant at 0 degree celcius
Solids generally expand as the temperature increases. Such an expansion results from an increase in the bond length between adjacent atoms as the vibrational amplitude increases.
When 0.097 moles of Magnesium hydroxide (Mg(OH)2) is dissolved in water, how many moles of ions are released into the solution ?
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