Write balanced nuclear equations for the following:(a) β⁻ decay of sodium-26(b) β⁻ decay of francium-223(c) Alpha decay of ²¹²₈₃Bi
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- Calculate the coulomb energy for the following three nuclei using the semi-empirical mass formula. a) 19F b) 48Tİ c) 63CuIdentify the unknown particle X in the following nuclear reaction equations. (Enter your answers in the form A X Z .) (a) 21H + 32He → 42He + XA compound with empirical formula C2H5O was found in a separate experiment to have a molar mass of approximately 90 g. What is the molecular formula of the compound?
- A 10.00 mg sample of technetium-93 (92.91024898 u) is used to heat 125.4 g of water from 23.4 degree C to 87.4 degree C. How many minutes will be required to heat the water if all of the energy generated from the decay is used to heat the water?238. 234. 14) Uranium-238 ( 92") decays to form thorium-234 ( 90 h) with a half-life of 4.5 x 10° years. How many years will it take for 75% of the uranium-238 to decay? а) 9.0х 10 years с) 9.0х10° years b) 4.5 x 10° years d). 3.8 х 10° усаrsThe half-life of 1311 is 8.04 days. (a) Convert the half-life to seconds. (b) Calculate the decay constant for this isotope. s-1 (c) Convert 0.550 µCi to the SI unit the becquerel. |Bq (d) Find the number of 1311 nuclei necessary to produce a sample with an activity of 0.550 μCi. | 1311 nuclei (e) Suppose the activity of a certain 131I sample is 7.10 mCi at a given time. Find the number of half-lives the sample goes through in 40.2 d and the activity at the end of that period. (Enter your answer for the number of half-lives to at least one decimal place.) half-lives mCi
- What mass of gallium oxide, Ga2O3, can be prepared from 29.0 g of gallium metal? The equation for the reaction is 4Ga + 3O2 ⟶ 2Ga2 O3.Ethylene oxide is produced industrially from the reaction of ethylene with oxygen at atmospheric pressure and 277 oC, in the presence of silver catalyst.C2H4(g) + O2(g) → C2H4O(g) (unbalanced)Assuming 100 % yield, how many kg of ethylene oxide can be produced from 34600 L of a mixture containing ethylene and oxygen in 1:1 molar ratio?Copper(II) acetate containing 6Cu is used to study brain tumors. This isotope has a half-life of 12.7 hours. If you begin with 25.0 ug of "Cu, what mass remains after 63.5 hours?