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a) Radium-230 has a half-life of 93 hours. Which one of the following statements is true?...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one of the following statements is true? a. It is not possible to know exactly how much remains after 45 hours because the rate of decay depends on the initial amount. b. After 45 hours have elapsed, all of the nuclide will have decayed. c. After 45 hours have elapsed, 1/8 of the original amount remains d. After 45 hours have elapsed, 1/4 of the...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one of the following statements is true? After 45 hours have elapsed, 1/8 of the original amount remains a. After 45 hours have elapsed, 1/4 of the original amount remains. Ob. It is not possible to know exactly how much remains after 45 hours because the rate of decay depends on the initial amount. Oc. After 45 hours have elapsed, all of the nuclide will...
a) Use the tabulated half-cell potentials to calculate AGº for the following balanced redox reaction. (F=...
a) Use the tabulated half-cell potentials to calculate AGº for the following balanced redox reaction. (F= 96,485 C/mol e) 2Li(s) + Cl2(g) → 2 Cl-(20) + 2Li *(90 E Li (ag) +_ Li(s) -3.04V Cl: (g) + 2e_2 +1.36 V Cl(aq) -8.49 x 10 sk] b. -425 kJ a. C. +324 k] d. -849 kJ | b) Name the following coordination complex: [Fe(H 20) 4F 2]F a. tetraaguadifluoroiron(II) fluoride O b.tetraaquadifluoroiron(III) fluoride c. diflugrotetrahydroiron(II) fluoride O d. difluorotetrahydrgironfluoride c) How...
Which of the following nuclides is most likely to decay via beta decay? Cr-51 P-27 Mo-109 Si-22...
Which of the following nuclides is most likely to decay via beta decay? Cr-51 P-27 Mo-109 Si-22 Which of the following compounds can exhibit cis-trans isomerism? a. [Cu(CO) 5Br] + b. [Pt(H 2O) 2(CN) 2] c. [Cr(NH 3) 5(OH)] 2+ d. [Mn(H 2O) 6]3 + The half-life of I-124 is 4.2 days. Which one of the following statements is true? a. After 12.6 days have elapsed, ¼ of the original amount remains b. After 12.6 days have elapsed, 1/8 of the...
(Show the work for these questions) 35. What is the half-life of a medication for which...
(Show the work for these questions) 35. What is the half-life of a medication for which only 12.5% remains after 24 hours? A. 4 hours B. 8 hours C. 16 hours D. None of the above 36. What is the half-life of an orally administered medicated syrup if its level is down to 61⁄4 % after 12 hours? A. 6 hours B. 4 hours C. 3 hours D. 2 hours 37. When a 500-mg medical dosage has degenerated to approximately...
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010...
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010 years. Calculate the age of the fossil if (5.7x10^1)% of rubidium-87 remains in the sample. Report your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer units Question 2 (1 point) Thallium-201 is used to diagnose heart disease. The half-life of thallium-201 is 72.9 hours. If a patient takes 7.7 ug,...
Applications of Exponential Equations Many real-life situations can be modeled by an exponential ...
ANSWER ALL PLEASE!
Applications of Exponential Equations Many real-life situations can be modeled by an exponential growth function of the form A(t) Ao ett constant that affects the rate of growth or decay, and t represents time. Using your knowledge of writing exponential equations that you did in the beginning of this chapter, what would A or an exponential decay function of the form A(t)-A ett where k represents the represent? 1. The amount of carbon-14 present in animal bones...
An atom of which of the following elements has the highest electron affinity? Select one: a....
An atom of which of the following elements has the highest electron affinity? Select one: a. Br b. Cl c. Rb d. As e. Se An atom of which of the following elements is not diamagnetic in the ground state? Select one: a. Rn b. Ca c. Pt d. Cd e. All are diamagnetic. The general electron configuration for the outermost electrons of the halogens is Select one: a. ns2np4 b. ns2np5 c. ns2np6 d. ns2np2 e. ns2np3 What...
Which of the following statements about the half-life of a reaction are true? Ob. None of...
Which of the following statements about the half-life of a reaction are true? Ob. None of the above are true. O a. The half-life of a first-order reaction increases with time. Oc. A zero-order reaction doesn't have a half-life. d. The half-life doesn't depend on the order of the reaction. The half-life of a second-order reaction is independent of time. e. A given reaction has rate law rate = k[A]2[B]1/2. If the instantaneous rate of reaction is 0.034 Mis when...
just the answers please thank you 27. If the half-life of a radioactive element is 500...
just the answers please thank you
27. If the half-life of a radioactive element is 500 years and the original sample is 24 grams, how much of the sample will remain after 1500 years? A. 12 B. 6 C. 3 D. 1.5 30. Nickel-cadmium batteries are used in rechargeable electronic calculators. Which substance is oxidized in the following balanced reaction for recharging a NiCd battery? Ca(OH)2 (s) + Ni(OH)2 → Cd (s) + NiO2 (s) + 2H20 (1) A. H20...
Sodium-24 is used to study blood circulation and has a half-life of 15 hours. Which one of the following statements is true? After 45 hours have elapsed, 1/8 of the original amount remains a. After 45 hours have elapsed, 1/4 of the original amount remains. Ob. It is not possible to know exactly how much remains after 45 hours because the rate of decay depends on the initial amount. Oc. After 45 hours have elapsed, all of the nuclide will...
a) Use the tabulated half-cell potentials to calculate AGº for the following balanced redox reaction. (F= 96,485 C/mol e) 2Li(s) + Cl2(g) → 2 Cl-(20) + 2Li *(90 E Li (ag) +_ Li(s) -3.04V Cl: (g) + 2e_2 +1.36 V Cl(aq) -8.49 x 10 sk] b. -425 kJ a. C. +324 k] d. -849 kJ | b) Name the following coordination complex: [Fe(H 20) 4F 2]F a. tetraaguadifluoroiron(II) fluoride O b.tetraaquadifluoroiron(III) fluoride c. diflugrotetrahydroiron(II) fluoride O d. difluorotetrahydrgironfluoride c) How...
A fossil was dated using rubidium-87, which undergoes beta decay and has a half-life of 4.75x1010 years. Calculate the age of the fossil if (5.7x10^1)% of rubidium-87 remains in the sample. Report your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer units Question 2 (1 point) Thallium-201 is used to diagnose heart disease. The half-life of thallium-201 is 72.9 hours. If a patient takes 7.7 ug,...
ANSWER ALL PLEASE!
Applications of Exponential Equations Many real-life situations can be modeled by an exponential growth function of the form A(t) Ao ett constant that affects the rate of growth or decay, and t represents time. Using your knowledge of writing exponential equations that you did in the beginning of this chapter, what would A or an exponential decay function of the form A(t)-A ett where k represents the represent? 1. The amount of carbon-14 present in animal bones...
Which of the following statements about the half-life of a reaction are true? Ob. None of the above are true. O a. The half-life of a first-order reaction increases with time. Oc. A zero-order reaction doesn't have a half-life. d. The half-life doesn't depend on the order of the reaction. The half-life of a second-order reaction is independent of time. e. A given reaction has rate law rate = k[A]2[B]1/2. If the instantaneous rate of reaction is 0.034 Mis when...
just the answers please thank you
27. If the half-life of a radioactive element is 500 years and the original sample is 24 grams, how much of the sample will remain after 1500 years? A. 12 B. 6 C. 3 D. 1.5 30. Nickel-cadmium batteries are used in rechargeable electronic calculators. Which substance is oxidized in the following balanced reaction for recharging a NiCd battery? Ca(OH)2 (s) + Ni(OH)2 → Cd (s) + NiO2 (s) + 2H20 (1) A. H20...
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