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Approximate the dose from gamma radiation to a prostate gland about 5cm in diameter occurs 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 as well as decays via low energy IT and a 140 keV gamma ray.
The pressure of a gas is 817 torr at 55°C. The quantity of the gas is fixed and the volume remains constant as the pressure is adjusted to 102 torr. What is the resulting temperature of the gas?
a battery has a volume of 1.78l and contains 3.28x10^3 grams of sulfuric acid, what is the density of sulfuric acid in g/ml?
What is the theoretical yield (in mol) of carbon monoxide when 2.62 mol oxygen reacts with 2.08 mol of ethanol (CH3CH2OH) to produce carbon monoxide and water
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
a student rinsed a burette with deionized water but not with na2s2o3 before filling the burette with na2s2o3 to
Red phosphorus is fairly stable, while white phosphorus will ignite spontaneously in air above 50 C. Determine the change in entropy for the conversion of the white form to the red form
Liquid water is fed to a boiler at 24°C and 10 bar and is converted at constant pressure to saturated steam. While operating, this process produces 10,000 m3/h of steam, which is discharged through a pipe with an inner diameter of 10 cm.
the density of titanium is 7.51 g/cm^3. What is the volume (in cubic inches) of 3.5 lb of titanium?
commercial grades of stearic acidc17h35cooh usually contain some palmiticacid c15h31cooh as well. a 1.115-g sample of a
What is the molar solubility of silver bromide in a solution that also contains 0.050M Ag+ ions at 25 °C? The Ksp of AgBr is 5.4 × 10-13.
the addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in
A bottle containing 330 of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
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