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Problem- The intensity of raidoactivity depends on the distance of the recipient from the soucre of radiation. Generally it falls as the inverse of the square of the distance separating the source and the object. For example, if the intensity of radioactivity is 1000millirem when the object is 1.0 meter away from the source, the object will be exposed to 100millirem of radiation when it is 10 meters away from the source. Suppose an object receives 234 millirem of radiation when it is 100 meter from the source, calculate the distance if the object is now subject to 135millirem.
Explain each and every step in detail. I need proficient help in the above problems.
suppose the flame on a gas burner emits light just like a blackbody. The flame appears blue, emitting most of its light at a wavelength of 475 nanometers.
What is the percent ionization of a 0.177 M solution of this acid?
Lakes that have been acidified by acid rain can be neutralized by the addition of limestone (CaCO3). How much limestone in kilograms would be required to completely neutralize a 5.2 x 109 L lake containing 5.0 x 10-3 g of H2SO4 per liter
if 16.87 grams of nitric acid are reacted with a large amount of aluminum metal what volume of hydrogen gas would be
Derive an expression for the time dependence of the degree of polymerization for a stepwise polymerization in which the reaction is acid-catalysed by the -COOH acid functional group. The rate law is d[A]/dt = -kr[A]2[OH].
A 32.22 g sample of a metal that looks like aluminum is heated to 99.8 C in hot water. The metal is then quickly transferred into exactly 50.0 ml of water at 22.9 C in a calorimeter
1. a coordination compound is formed from rutheniumii chlorideand ammonia. what is the correct formula for this
What is the specific heat constant if 621 g of Metal A raises the temperature of water by 3.20°C and releases 1.20 kJ of heat
A compound contains only C, H, N and O . Combustion of a 1.48g sample in excess oxygen yields 2.60g of CO2 as well as 0.799g ofH2O. A separate experiment shows that a 2.43gsample contains 0.340g of N. Explain what is the empirical (simplest) formu..
The Kc for the reaction of hydrogen and iodine to produce hydrogen iodide equals 54.3 at 430 C. Calculate the quilibrium concentrations of H2,I2, and HI if the intial concentrations are H2=I2=0M and HI=.525M.
Esters as well as acid chlorides can also be converted into alcohols, however they require two equivalents of organometallic reagents to accomplish the conversion.
Show the reaction mechanism when 2-methyl-2-butanol, sulfuric acid(H2SO4), and water are in a mixture
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