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Calculate the activity of Uranium-238 in 100 grams of uranium ore containing 5 weight percent U308. What is the expected activity of Uranium-234 in the ore?
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A scuba diver creates a spherical bubble with a radius of 2.5 cm at a depth of 30.0 m where the total pressure (including atmospheric pressure) is 4.00 atm. What is the radius of the bubble when it reaches the surface of ...
An analysis of an oxide of nitrogen with a molecular weight of92.02 amu gave 69.57% oxygen and 30.43 % nitrogen. What is the empirical formula of the compound?
The Earth receives approximately 2 x 1014 kJ/s of solar energy. What mass of solar material is converted into energy each second to produce this much energy
Do you notice any trends or can you make any generalizations about where certain types of liquids fall on the pH scale?
Carbon-carbon single bonds in organic molecules have energies about350. kJ/mol. What is the corresponding wavelength? Could UV lamps(248 nm) be used to break these bonds?
Label each of the following phase changes as either exothermic or endothermic. i. H 2 O( s ) + heat H 2 O( l ) (1 point) ii. H 2 O( g ) H 2 O( l ) + heat (1 point)
An 18g ice cube initially at -10C is dropped into 120 g of water initially at 25C. What is the final temperature of the system after all of the ice has melted? Use the data provided in the reference data sheet and assume ...
Silver nitrate has the molecular formula AgNO3. In a 109.0 g sample of silver nitrate, how much of that mass (in g) is from the silver atoms?
What would an increase in the metal wire mass indicate when the metal wire starts to form copper on it from a chemical reaction from 6M HCl and copper (II) sulfate pentahydrate? What would a decrease in the metal wire ma ...
Magnesium metal(0.100 mol) and a volume of aqueous hydrochloric acid that contains0.500 mol of HCl are combined and react to completion. How manyliters of hydrogen gas, measured at STP, are produced? Mg(s) + 2HCl(aq) --- ...
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