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What is the rate constant of a first-order reaction that takes 288 seconds for the reactant concentration to drop to half of its initial value?
Compute the vapor pressure at the temperature of 25 degree Celsius of H 2 O above a solution formed by mixing 100.
Concentration Units Conversions, Lethal concentration (50 percent kill): 2,485 mg/m3/4 hour... this is for a rat
Which of the following compounds is soluble in water ? A) BaSO4
Describe clearly why a single indicator solution in only useful for measuring pH over a rather narrow range. Use a specific indicator of solution
What is the molality of a solution that contains 80.0 g Al2(SO4)3 in 625 g H2O?
if the initial concentration of the reactant in a first-order reaction A-> products is 0.64 mol/L and the half-life is 30.0 s. what is the concentration after 60 s.
Three gases, hydrogen, helium, and krypton are confined in a 10.0 L vessel at a pressure of 6.00 atm. The vessel contains 4.00 moles of hydrogen, 3.00 moles of helium, and 5.00 moles of krypton.
The [H3O+] is 1*10-6M in a solution. Calculate the [OH-]
A substance has a solubility of 350 ppm. How many grams of the substance are present in 1.0 L of a saturated solution.
In a laboratory experiment, students synthesized a new compound and found that when 14.10 grams of the compound were dissolved in 208.0 grams of ethanol, the solution began to boil at 78.9510C
the fact that the relative reactivity of C-H bonds of an alkane for free-radical chain halogenation is tertiary > secondary > primary?
Atmospheric pressure decreases as altitude increases. In other words, there is more air pushing down on you at sea level, and there is less air pressure pushing down on you when you are on a mountain
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