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Problem- Sulfur 35 is a radioactive isotope used in chemical and medical research. A 0.48 mg sample of S-35 has an activity of 20.4 Ci. What is the decay constant in 1/sec?
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a 10.0 long cylindrical glass tube sealed at one end is filled with ethanol. the mass of ethanol needed to fill the
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water. Enter your answer in kilojoules per mole of compound t..
Indicate which layer( aqueous or organic) each component in the reaction will mainly reside in ( for both products and reactants ) for all the following three reactions: (1)Show the reaction of 1-naphthylamine hydrochloride with sodium hydroxide.
A sample of nitrogengas has a volume of 32.4 L at 20 degrees celcius. The gas is heated to 220 degrees celcius at a constant pressure. What is the final volume of nitrogen
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A student needs 65g of butonic acid for a reaction. The student has 450g of a 43% in ethanol.
An optical pure alkyl chloride has a rotation of [alpha]d of +12.3 while the coresponding alcohol has [alpha]d +10.8. in a reaction of this alkyl chloride with NaOH the resulting alcohol shown alpha d = -8.4. how much of the substituion proceeded b..
A student tried to detect the presence of calcium ion in milk by adding Na2SO4 solution to a sample of milk. What is the likely results of her experiment? What would she observe. Would she be able to detect Calcium ion
To what volume should you dilute 122 mL of an 8.05 M CuCl2 solution so that 51.0 mL of the diluted solution contains 4.61 g CuCl2
How many chiral centers are there in aldosterone. How many total stereoisomers are there in aldosterone
At 25 degrees C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.1 kJ per gram of carbon monoxide consumed. What is the value of ^H for the balanced reaction?
2 tanks xy of gas are connected by a closed valve. tank x is 5 liters and has oxygen gas at a pressure of 24 atm. tank
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