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complete the transmutation equation shown below. assume that there is only one unknown product. u92235→he24+?

a particular radioactive isotope has a half-life of 5.0 s. what fraction of the original amount of isotope will remain in a sample after 20.0 s?

samarium-146 (s146m) can decay to form neodymium-142 (n142d). each atom of s146mthat decays produces one atom of n142d and one alpha particle. if the mass of 1 mol s146mis 145.9130 g, the mass of 1 mol n142d is 141.9077 g, and the mass of 1 mol alpha particles is 4.0015 g, how much mass is lost during the decay of 1 mol s146m to n142d?

Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, pbutane, alone. to do this, consult a reference and record the partial pressure of the water vapor, pwater, at the temperature you recorded. use the following formula to compute the partial pressure of the butane. pbutane = atmosphere - pwater use the following combined gas law formula and compute the volume that the butane sample will occupy at stp. (hint: convert both temperatures to kelvin.) pbutane x voriginal = pstandard x vfinal troom tstandard use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. grams of butane you used “x” grams of butane ml of butane corrected to stp = 22,400 ml compute the theoretical molar mass of butane based on its formula and the atomic masses on the periodic table. compare your experimental results from #3 to the theoretical value of #4, computing a percent error of your findings using this formula: % error = measured value - accepted value x 100 accepted value use the following ratio and proportion formula to determine the mass of butane needed to occupy a volume of 22.4 l at stp. need asap