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Part I-Essay questions Please show all your work for complete credit 21. If a certain radioisotope...
please show all formulas/work 5. The decay constant of a radioactive source is 0.300/minute. - How...
please show all formulas/work 5. The decay constant of a radioactive source is 0.300/minute. - How much time must elapse before the activity is reduced to… (a) 85%? (b) 25%? (c) 5%? B) The half-life of a radioactive source is 14.0 minutes. - How much time must elapse before the activity is reduced by… (a) 70%? (b) 45%? (c) 20%? C) Radon-222 has a physical half-life of 30.0 days. A 10.24 microgram piece of this source is placed in storage....
Question 21 6 pts Please show your work for full credit. Platinum-170 has a half-life of...
Question 21 6 pts Please show your work for full credit. Platinum-170 has a half-life of 14.0 ms. How long in milliseconds) would it take for a sample of 170Pt to become 75.0 % decayed? D Question 22 9 pts Please show your work for full credit. For the following reaction: + HBr = ? A. (4 pts) Name the organic reactant. B. (5 pts) Provide the structure of the product (Note: You must clearly draw this on your paper...
D. Complete the following stoichiometry problems. Show ALL of your work to receive full credit. Equations...
D. Complete the following stoichiometry problems. Show ALL of your work to receive full credit. Equations and mole-to-mole relationships 21. For the following reaction: 4Cr(s) + 302(g) → 2Cr2O3(s) a. How many moles of oxygen (O2) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4g of Oz, how many moles of Cr203 can be produced: c. How many grams of Cr metal would be needed to produce 38.2g of chromium (III) oxide? 22. Sulfuric acid (H2SO4) is...
These questions are to guide your studying. They do not cover all of the topics that...
These questions are to guide your studying. They do not cover all of the topics that may be on exams. Using the Internet, find out how many isotopes of Carbon exist in nature. Which are the three most abundant? Consult a periodic table. Determine the atomic numbers and mass numbers for: An atom of oxygen with 8 neutrons. An atom of Phosphorus with two more neutrons than protons. An atom of Aluminum with 14 neutrons.^32P is an unstable isotope of...
7.10. Please answer all the questions and show your work. Jane, whose mass is 50.0 kg,...
7.10. Please answer all the
questions and show your work.
Jane, whose mass is 50.0 kg, needs to swing across a river (having width D) filled with person-eating crocodiles to save Tarzan from danger. She must swing into a wind exerting constant horizontal force F vector, on a vine having length L and initially making an angle theta with the vertical (see below figure). Take D = 48.0 m, F vector = 115 N, L = 40.0 m, and theta...
show all work please Roughly 12000 people in a certain country are diagnose a thyroid cancer...
show all work please
Roughly 12000 people in a certain country are diagnose
a thyroid cancer every year which accounts for 1% of all cancer
cases that occurs in women 3 times as frequently as men fortunately
thyroid cancer can be treated successfully and many cases with
radioactive iodine or I-131 this unstable form of iodine has a 1/2
life of 8 days and is given in small doses measured in
milicuries
A)suppose a patient is given initial dose of...
please help Answer the questions in the blue book in order. You must show all working for full credit. R- 0.08206...
please help
Answer the questions in the blue book in order. You must show all working for full credit. R- 0.08206 Latm/mol.K 1. Initial rate data at 25.0 °C for the reaction: NH4+ (aq) + NO2 (aq) ----> N2(g) + H20 (1) are shown below: Expt. [NH4+lo [NO2 lo Initial rate/Ms 0.24 0.12 0.12 0.10 0.10 0.15 7.2 x 10-6 3.6 x 10-6 iii) 5.4 x 10-6 Determine the rate law from the data and calculate the rate constant k...
I just need the last part h) Please show all your work. I'll rate. Thank you...
I just need the last part h) Please show all your work. I'll
rate. Thank you in advance!
Physics 1122 Quiz 4E – Exp. 7 October 22 - 24, 2019 DIRECTIONS: Work the problem. You must show all work to receive credit, and you must return this sheet. The problem is worth 20 points. If you have to construct a graph, use the graph paper provided in the laboratory. Solve the problem using only symbolic algebra and then report numerical...
please show all work. Thank you 145 140 130 Alpha decay Beta (-) decay 125 207...
please show all work. Thank you
145 140 130 Alpha decay Beta (-) decay 125 207 Pb 80 85 90 95 Enter the correct nuclide symbol in each open tan rectangle in Figure, which shows the sequences of decays in the natural radioactive series starting with the long-lived isotope uranium-235 and ending with the stable nucleus lead-207. Please use the online period table. Sym Naine 2 Li 6.96 Be 90122 14.007 15 18 998 20 180 21 22 Mn Fe...
Plzz answer and show all work for the questions below. Including any Free body diagrams. A...
Plzz answer and show all work for the questions below.
Including any Free body diagrams.
A 0.50 kg ball is attached to al and the entially ch, the ball is at point A (with the rod horizontal) 2.00 m/s: The ball has an internal thruster s attached to a light rod of radius R (-1.20m). When the experimenter starts her stonwatch the ball is at point A and the ball is moving with speedy. 2.00 m/s: The ball has an...
Question 21 6 pts Please show your work for full credit. Platinum-170 has a half-life of 14.0 ms. How long in milliseconds) would it take for a sample of 170Pt to become 75.0 % decayed? D Question 22 9 pts Please show your work for full credit. For the following reaction: + HBr = ? A. (4 pts) Name the organic reactant. B. (5 pts) Provide the structure of the product (Note: You must clearly draw this on your paper...
D. Complete the following stoichiometry problems. Show ALL of your work to receive full credit. Equations and mole-to-mole relationships 21. For the following reaction: 4Cr(s) + 302(g) → 2Cr2O3(s) a. How many moles of oxygen (O2) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4g of Oz, how many moles of Cr203 can be produced: c. How many grams of Cr metal would be needed to produce 38.2g of chromium (III) oxide? 22. Sulfuric acid (H2SO4) is...
These questions are to guide your studying. They do not cover all of the topics that may be on exams. Using the Internet, find out how many isotopes of Carbon exist in nature. Which are the three most abundant? Consult a periodic table. Determine the atomic numbers and mass numbers for: An atom of oxygen with 8 neutrons. An atom of Phosphorus with two more neutrons than protons. An atom of Aluminum with 14 neutrons.^32P is an unstable isotope of...
7.10. Please answer all the
questions and show your work.
Jane, whose mass is 50.0 kg, needs to swing across a river (having width D) filled with person-eating crocodiles to save Tarzan from danger. She must swing into a wind exerting constant horizontal force F vector, on a vine having length L and initially making an angle theta with the vertical (see below figure). Take D = 48.0 m, F vector = 115 N, L = 40.0 m, and theta...
show all work please
Roughly 12000 people in a certain country are diagnose
a thyroid cancer every year which accounts for 1% of all cancer
cases that occurs in women 3 times as frequently as men fortunately
thyroid cancer can be treated successfully and many cases with
radioactive iodine or I-131 this unstable form of iodine has a 1/2
life of 8 days and is given in small doses measured in
milicuries
A)suppose a patient is given initial dose of...
please help
Answer the questions in the blue book in order. You must show all working for full credit. R- 0.08206 Latm/mol.K 1. Initial rate data at 25.0 °C for the reaction: NH4+ (aq) + NO2 (aq) ----> N2(g) + H20 (1) are shown below: Expt. [NH4+lo [NO2 lo Initial rate/Ms 0.24 0.12 0.12 0.10 0.10 0.15 7.2 x 10-6 3.6 x 10-6 iii) 5.4 x 10-6 Determine the rate law from the data and calculate the rate constant k...
I just need the last part h) Please show all your work. I'll
rate. Thank you in advance!
Physics 1122 Quiz 4E – Exp. 7 October 22 - 24, 2019 DIRECTIONS: Work the problem. You must show all work to receive credit, and you must return this sheet. The problem is worth 20 points. If you have to construct a graph, use the graph paper provided in the laboratory. Solve the problem using only symbolic algebra and then report numerical...
please show all work. Thank you
145 140 130 Alpha decay Beta (-) decay 125 207 Pb 80 85 90 95 Enter the correct nuclide symbol in each open tan rectangle in Figure, which shows the sequences of decays in the natural radioactive series starting with the long-lived isotope uranium-235 and ending with the stable nucleus lead-207. Please use the online period table. Sym Naine 2 Li 6.96 Be 90122 14.007 15 18 998 20 180 21 22 Mn Fe...
Plzz answer and show all work for the questions below.
Including any Free body diagrams.
A 0.50 kg ball is attached to al and the entially ch, the ball is at point A (with the rod horizontal) 2.00 m/s: The ball has an internal thruster s attached to a light rod of radius R (-1.20m). When the experimenter starts her stonwatch the ball is at point A and the ball is moving with speedy. 2.00 m/s: The ball has an...
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