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# Plutonium isotope ${ }^{239}$ Pu decays by alpha decay with a halflife of $24100 mathrm{y}$. How many milligrams of helium are produced by an initially pure $12.0 m... ## Question ###### Plutonium isotope${ }^{239}$Pu decays by alpha decay with a halflife of$24100 mathrm{y}$. How many milligrams of helium are produced by an initially pure$12.0 mathrm{~g}$sample of${ }^{239} mathrm{Pu}$at the end of$20000 mathrm{y}$? (Consider only the helium produced directly by the plutonium and not by any by-products of the decay process.) Plutonium isotope${ }^{239}$Pu decays by alpha decay with a halflife of$24100 mathrm{y}$. How many milligrams of helium are produced by an initially pure$12.0 mathrm{~g}$sample of${ }^{239} mathrm{Pu}$at the end of$20000 mathrm{y}$? (Consider only the helium produced directly by the plutonium and not by any by-products of the decay process.) ## Answers #### Similar Solved Questions 5 answers ##### Exercise 5 [10 marks] Let (Tn) nGN be a sequence of real numbers such that I1 > 0 and Tn+l for all n eN. Prove that Tn > 2 for all n > 2. Prove that (Tn neN is a COntractive sequence and find lim nAo In" Exerclse 6., [10 marks] By using the Archimedean Property; prove directly from the definitions (do not use aY limnit theorems) that V2n tends to T-00 nCN (2) (2n 72)neN tends Lo Exercise 5 [10 marks] Let (Tn) nGN be a sequence of real numbers such that I1 > 0 and Tn+l for all n eN. Prove that Tn > 2 for all n > 2. Prove that (Tn neN is a COntractive sequence and find lim nAo In" Exerclse 6., [10 marks] By using the Archimedean Property; prove directly from th... 5 answers ##### Score: = of 2 pts2 0f 12 ccmnata6.2.5Fund Ine #te4 6l Ine shaded region Tht graph tne righl depcts Sureg nf ? Jult antaen Ecordr Clck Io Yiem Di7o cttha Ji Cickn viE N page 2 oLine tatlenormally dis nbuted Kth , nian of 100 and elanomm Gotaion0'ThrArns pitne : uUcd rcoionEInoidAnur dCri-plcornocna Score: = of 2 pts 2 0f 12 ccmnata 6.2.5 Fund Ine #te4 6l Ine shaded region Tht graph tne righl depcts Sureg nf ? Jult antaen Ecordr Clck Io Yiem Di7o cttha Ji Cickn viE N page 2 oLine tatle normally dis nbuted Kth , nian of 100 and elanomm Gotaion0' ThrArns pitne : uUcd rcoionE Inoid Anur dCri-... 5 answers ##### (20 points) Evaluate Jf R (3x 4y) dA where R is the region enclosed by the right half circle with center the origin and the radius 5,and y 2 x (20 points) Evaluate Jf R (3x 4y) dA where R is the region enclosed by the right half circle with center the origin and the radius 5,and y 2 x... 5 answers ##### Draw thc mechanism for thc rcactions_Ph;P-CH,CH,CH;2 eq: H,o. H(CH;hNHmild acid Draw thc mechanism for thc rcactions_ Ph;P-CH,CH,CH; 2 eq: H,o. H (CH;hNH mild acid... 5 answers ##### Refer t0 the Venn diagram above wnere represents the number of students who like apples represents the number of students who Iike blueberries and represents the number of students who Ilke cherries. Given that among 100 students, 40 like apples; 39 like blueberries, 31 like cherries Iike apples and blueberries, 15 like blueberries and cherries; 6 Iike apples and cherries 'like all threâ‚¬ fruits cardinality cach funda Menta product labeled |-VIII in the Venn diagram_Vili: Refer t0 the Venn diagram above wnere represents the number of students who like apples represents the number of students who Iike blueberries and represents the number of students who Ilke cherries. Given that among 100 students, 40 like apples; 39 like blueberries, 31 like cherries Iike apples and... 5 answers ##### Hydrogen atoms absorb energy so that electrons can be excited to the n = 7 energy level. Electrons then undergo these transitions, among others: (a) n =7 5 n =5 (6) n=6 - n=5 (c) n=7 - n=6 Which transition produces a photon with the least energy? Which transition produces a photon with the highest frequency? (iii) Which transition produces a photon with the shortest wavelength? Hydrogen atoms absorb energy so that electrons can be excited to the n = 7 energy level. Electrons then undergo these transitions, among others: (a) n =7 5 n =5 (6) n=6 - n=5 (c) n=7 - n=6 Which transition produces a photon with the least energy? Which transition produces a photon with the highest f... 5 answers ##### 1) Total number of valence electrons 2) VSEPR Formula 3) Electron pair geometry 4) Molecular geometry 5) Bond Angle 6) Polar (P) Non-polar (NP) 7) Total number of unsharcd pairs of electrons O the CORE atom 1) Total number of valence electrons 2) VSEPR Formula 3) Electron pair geometry 4) Molecular geometry 5) Bond Angle 6) Polar (P) Non-polar (NP) 7) Total number of unsharcd pairs of electrons O the CORE atom... 5 answers ##### Quesen 16pteCeneder {e combustion 0f ethane: 2 C,Ho * 7 02 4 COz 6+io #eograms 0f ethane (molar mass 0f 30 grams/mol) reaci how many males of CO; Jre produced? Quesen 16 pte Ceneder {e combustion 0f ethane: 2 C,Ho * 7 02 4 COz 6+io #eograms 0f ethane (molar mass 0f 30 grams/mol) reaci how many males of CO; Jre produced?... 5 answers ##### IeachtmatndCentaniRcxlot Topicaconien of iron ore cun be determined by (itration will etanauTO The Tron KMnO solution The iron orc dissolved in HCI; and all the iron Eeduceo ions: This solution then titrated with KMnO. solution producing Fe"+and Mn- tons acidic solution. Ifit required 30.38 mL of 0.0438 M the maSS petccnt = ofiron KMnOa ttrute solution made from 0.5770 of iron Ore, whatthe iron ore?Mase percent =Retry Entir Groupmoro group atempts remainingGubrniit astot"ZrodZredZicqZr Ieachtmatnd Centani Rcxlot Topica conien of iron ore cun be determined by (itration will etanauTO The Tron KMnO solution The iron orc dissolved in HCI; and all the iron Eeduceo ions: This solution then titrated with KMnO. solution producing Fe"+and Mn- tons acidic solution. Ifit required 30.38 ... 5 answers ##### 5 . What is the vertex of the function y =(x+u? +4?If this graph were reflected across the y-axis, what would be the coordinates of the vertex after this reflection?(-lb) (-1 4)d) 5 . What is the vertex of the function y =(x+u? +4? If this graph were reflected across the y-axis, what would be the coordinates of the vertex after this reflection? (-l b) (-1 4) d)... 5 answers ##### 12 The graph of y=f(x) is shown to the left: (3 pts) On the same set of axes, sketch the graph of y-f'(x) =6. (1 pt) Put dots on the graph to indicate the approximate location of two inflections points of the graph of y=f(x)13.The 'graph ofthe derivative y-f'(x) is shown to the right: (1pt) Approximately what is the X-value ofthe critical point ofthe original function y=f(x) that is a local max?The Derivative6. (1 pt) How many inflection points does y=f (x) have?c. (1 pt) Suppose 12 The graph of y=f(x) is shown to the left: (3 pts) On the same set of axes, sketch the graph of y-f'(x) = 6. (1 pt) Put dots on the graph to indicate the approximate location of two inflections points of the graph of y=f(x) 13.The 'graph ofthe derivative y-f'(x) is shown to the rig... 5 answers ##### Fountains The height of a fountain's water stream can be modeled by a quadratic function. Suppose the water from a jet reaches a maximum height of 8 feet at a distance 1 foot away from the jet.Suppose a worker increases the water pressure so that the stream reaches a maximum height of 12.5 feet at a distance of 15 inches from the jet. The water now lands 3.75 feet from the jet. Write a new quadratic function for$H(d) .$How do the changes in$h$and$k\$ affect the shape of the graph?
Fountains The height of a fountain's water stream can be modeled by a quadratic function. Suppose the water from a jet reaches a maximum height of 8 feet at a distance 1 foot away from the jet. Suppose a worker increases the water pressure so that the stream reaches a maximum height of 12.5 fe...
##### Acrate slides down a rampOnce reaching the bottom of the ramp the crate slides 15m horizontally across the floor toa wall: The crate reaches the wall 2.5 s after leaving the ramp: Ifthe rampis at an elevation angle of 158 how long is the ramp?Ignore friction
Acrate slides down a ramp Once reaching the bottom of the ramp the crate slides 15m horizontally across the floor toa wall: The crate reaches the wall 2.5 s after leaving the ramp: Ifthe rampis at an elevation angle of 158 how long is the ramp? Ignore friction...
##### Uxe H awviFmnbe far Te astuzon traet ' tfsbbouid IBVPs: (i) 6=3uzx, Uk,)-=Pk) , ulot)=ubt)-o; Cii)_U+ =4Uzz , u6,o) = (lz) , Uz(o,t)=u(I,+)=o; (M) Ut =Uzz V6,0)=p6) Ux(t)=k(2,t)=0. (Hint : It z=#+m uG,t)-U(#;t)E:6.+)).
Uxe H awviFmnbe far Te astuzon traet ' tfsbbouid IBVPs: (i) 6=3uzx, Uk,)-=Pk) , ulot)=ubt)-o; Cii)_U+ =4Uzz , u6,o) = (lz) , Uz(o,t)=u(I,+)=o; (M) Ut =Uzz V6,0)=p6) Ux(t)=k(2,t)=0. (Hint : It z=#+m uG,t)-U(#;t)E:6.+))....
##### 35. Describe competitive inhibitor with respect to the active site 36. Compare competitive and noncompetitive Inhibitor based on binding site 37. Propose how an inhibitor may Or may not be an allosteric effector based on competitive; noncompetitive, and uncompetitive Unhibition
35. Describe competitive inhibitor with respect to the active site 36. Compare competitive and noncompetitive Inhibitor based on binding site 37. Propose how an inhibitor may Or may not be an allosteric effector based on competitive; noncompetitive, and uncompetitive Unhibition...
##### 6. Of the 200 books in a sale bin, 114 are fiction, 100 are Canadian, and 70 are about the military. It is also known that 48 of these books are Canadian fiction, 41 are about the Canadian military, 27 are military fiction, and 17 are Canadian fiction about the military.a) Use a Venn diagram to organize this data.a) How many of these books are not in any of the listed categories?b) How many of these books are Canadian only?c) Determine n(Canadian or fiction)d)There are eight girls and five boys
6. Of the 200 books in a sale bin, 114 are fiction, 100 are Canadian, and 70 are about the military. It is also known that 48 of these books are Canadian fiction, 41 are about the Canadian military, 27 are military fiction, and 17 are Canadian fiction about the military.a) Use a Venn diagram to orga...