b It turns out that gallium 67 actually undergoes electron capture and then

B it turns out that gallium 67 actually undergoes

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b) It turns out that gallium-67 actually undergoes electron capture and then gamma emission. Write a balanced nuclear equation for both of these steps. Include an atomic number, mass number, and symbol for each reaction component.c) If 69.8% of a gallium-67 sample remains in a patient after 1.69 days, what is its half-life? d) A dose of 10miliCi Ga-67 citrate is recommended with imaging 72 hours after the dose. How many moles of Ga-67 citrate should be administred to achieve this dosage? 6 8 e) It turns out that the rate of nuclear decay is independent of temperature. What does this imply about the activation energy of the process? (Circle one) E a = 0 f) Circle one:True or False: If Ea= 0, a reaction cannot be catalyzed.a) 69Ga and 71Ga are the two stable isotopes of gallium. Circle ALL of the type/s of nuclear decay that the isotope 67Ga is likely to undergo: 6
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CHEM 230 Sp17 PREP Final Exam Blank p36 1) F2(g), Ne(g), and O2(g)are each added to separate 5.0 L rigid flasks to a pressure of 1 bar at 273 K.a) Circle ALL of the properties listed below that are the same (equal) in each flask. i) moles of gas ii) density iii) v rms iv) particle density v) collision frequency vi) ideal heat capacity vii) van der Waals "a" viii) van der Waals "b" ix) entropy b) Circle ALL of the properties listed below that are ranked: Ne < O 2 < F 2 c) Circle ALL of the properties listed below that are ranked: Ne < F 2 < O22) Match the following enthalpy changes with the correct substance.Write one letter in each box. c = combustion A) -1300 kJ/mol B) 62.4 kJ/mol C) 31 kJ/mol D) 0 kJ/mol 3) 0.75 moles of H 2 O (g) are condensed isothermally and reversibly at 100 o C to liquid water (H 2 O (l) ) at a constant pressure of 1 atm. The enthalpy of vaporization of water at 100 o C is +40.7 kJ/mol and the density of liquid water at 100 o C is 0.958 g/mL. Find Δ H, q, w, Δ G T, K and Δ S for this condensation. Δ H = kJ q = J w = J Δ G T = kJ K @100C = Δ S = J/K Pay attention to units and signs. 12 8 16 Δ H o f C (s,graph) Δ H o f Br 2(g) Δ H o f I 2(g) Δ H o c C 2 H 4(g) i) moles of gas ii) density iii) v rms iv) particle density v) collision frequency i) moles of gas ii) density iii) v rms iv) particle density v) collision frequency vi) ideal heat capacity vii) van der Waals "a" viii) van der Waals "b" ix) entropy vi) ideal heat capacity vii) van der Waals "a" viii) van der Waals "b" ix) entropy
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CHEM 230 Sp17 PREP Final Exam Blank p37 4) Acetic acid forms a dimer in the gas phase. The dimer is held together by two hydrogen bonds (shown as dashed lines in the picture), each with a bond enthalpy of 31.4 kJ/mol.OH3COH2OHOCH3OH2 C2H4O2(g)<--> C4H8O4(g)a) What is the oof the dimerization reaction? O H 3 C Δ H
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