An isotope of the element thallium tl-206 undergoes beta
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. Assume you begin with 1.0 grams of the thallium isotope, what mass of the isotope will be left after 9.3 minutes have elapsed?
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In the Bohr model of hydrogen, the electron moves in a circular orbit around the nucleus. Determine the angular speed of the electron
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the specific heat of aluminum is .215 calories per gram per degree celcius. calculate the amount of heath required to raise the temperature
Analyze the external environments (e.g. customer, competitor, economic, etc.) in which Walmart operates. How well has Wal-mart monitored these eight different environments? Be sure to give examples of how it has succeeded, or not.
An isotope of the element Thallium, Tl-206, undergoes beta decay with a half life of 3.1 minutes. what mass of the isotope will be left after 9.3 minutes have elapsed
A cylinder fitted with a frictionless piston contains 2 kg of superheated refrigerant R-134a vapor at 350 kPa, 100oC. The cylinder is now cooled so that the R-134a remains at constant pressure un- til it reaches a quality of 75%.
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When CuCl2 is heated to 100C, the compound is dehydrated. If 0.235g of CuCl2 * x H20 yields 0.185 g CuCl2 on heating, what is the exact formula of the hydrate
Assume that the wall separating the steam and seawater is 4 mm of steel, with con- ductivity of 15 W/m K, and that a maximum 5oC difference between the two fluids is allowed in the design.
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