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Approximate the dose from gamma radiation to a prostate gland about 5cm in diameter arising from the implant of a Tc99m source at the center of the gland that has an initial count rate of 100,000 Bq. Tc99m has a 6 hour half life also decays via low energy IT and a 140 keV gamma ray.
a graduated cylinder contains 154 of water. a 15.0 piece of iron density 7.86 and a 18.0 piece of lead are added.
carbonyl chloride cocl2 also called phosgene wasused in world war i as a poisonous gas. the equilibriumconcentrations
A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.
Calculate the equilibrium concentration of each substance in the reaction. b.) Calculate the equilibrium constant for the reaction.
The solubility of magnesium phosphate at a given temperature is 0.936 g/100 mL. Calculate the Ksp at this temperature.
An experiment was performed to determine the solubility and the solubility product constant of gallic acid, a monoprotic organic acid (gmm=170.12). The equilibrium involved is: C6H5O3COOH(s) C6H5O3COO-(aq) + H+(aq)
a box contains a mixture of small copper spheres and small lead spheres. the total volume of both metals is measured by
Disulfur dichloride is produced by reacting chlorine gas with molten sulfur. What is the percent yield if 3.25 g S2Cl2 is isolated from the reaction of 5.0 g S8 and 3.75 g Cl2
Which ions were present in the original solution? Write net ionic equations for the formation of each of the precipitates observed.
Calculate the molarity of a solution made by taking 25.0 mL of 3.95 M. CaCl2 and diluting it to a final volume of 200. mL
Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304 x 10^-3 in.) can be produced from the copper in 6.95 lb of covellite, an ore of copper is 66.0% copper by mass
What volume of CO2 would be produced each day? Suppose the gas mixture produced by the decomposition is trapped in a container at 17 degree celcius
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