A typical chest X ray exposes a patient to an effective dose of 0.05 mSv. A) How many rem is this? Express your answer to two significant figures and include the appropriate units.   B)How many chest X rays would a patient have to receive before biological effects would be observed? (The limit is >25 rem.) Express your answer using two significant figures.

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A: Disinfection  Disinfection is a secondary  process in this mainly chlorination and uv treatment of…

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A:

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A:

Q: NUCLEAR CHEMISTRY: Consider the nuclei 117 50Sn. Determine its mass defect in kilograms if its…

A:

Q: A brain scan uses the radioisotope oxygen-15. The recommended dosage is 50 mCi . A supply of 230 mCi…

A: Recommended dosage = 50 mCisupply of 250mCi correspond to 40ml

Q: 1.Methane was combusted at 100.0 degrees C and 1.00 atm. The following data table was used to…

A:

Q: Methane was combusted at 100.0 degrees C and 1.00 atm. The following data table was used to collect…

A: Number of mole (n) of substance is calculated by dividing mass of substance (m) to molar mass (M) of…

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A: If it is unstable to be heated than reactivity grade is 1.

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A: Here we are required to find the initial amount of the element.

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A: Given : Radiation rate in city = 6 mSv/hour And duration given = 1 year

Q: 2. In a Mars Direct mission, the astronauts would return home in an Earth Return Vehicle (ERV)…

A:

Q: What is the isotope that is used in carbon dating? What is its half-life?

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: What did you notice about the relationship between anobjects Mass and its volume

A: Given What did you notice about the relationship between anobjects Mass and its volume

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A:

Q: Show all your work on a sheet of paper to solve the following significant figures. You can earn…

A: 6.02*1023 atoms = 1 mole  4.75* 1024 atoms = 7.89 mole of Ar

Q: If you started with 7.25 bsh, how many bgt is equal to this?

A:

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A: A numerical problem based on density measurements, which is to be accomplished.

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A: Solution                          Given that  Determine the number of times per year when an…

Q: If a field was sprayed with 2.5 x 104 g DDT per acre, how many years would it be for the…

A: Given the initial amount of DDT, No = 2.5*104 g  Final amount after time "t", N = 50.0 g

Q: The mass defect for the reaction shown below is amu. The atomic masses are 3He (3.0160), 4He…

A: The considered reaction is, 2He23→He24 + 2 H11

Q: What is reservior in environmental chemistry? What are O1D (O singlet D) and O3P( O priplet P)? Not…

A: As follows.

Q: Which practice is NOT used to gauge accuracy? raw data and results from calibration checks B.…

A: Correct option is (e) sample rejection .

Q: Thallium-201 is a radioisotope used in brain scans. If the recommended dose is 3.0 mCimCi and a vial…

A:

Q: What will be the cost in dollars for photocopies if you have 32 pages in a booklet you need 175…

A: No. of pages in a booklet = 32No. of booklets = 175Cost of each copy = 4.5 cents

Q: How many grams of water vapor is formed as a result of the reaction? How many liters of carbon…

A: Given Methane = 774 g

Q: How does the 1966 Fahrenheit 451 move portrayed censorship? Provide details and examples

A: Adaptation of the Ray Bradbury novel about future society that banned all books. Fahrenheit 451…

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A:

Q: A large freshwater (total mass of water 10^5 kg) lake contains no lithium. A sudden spill releases a…

A: •Weight of water = 1×105 Kg. •Lithium flow rate = 3.98×108 mg/hr •We have to calculate time required…

Q: 58. Apply Graph mass versus volume for the data given in the table wh slope of the line? Volume…

A: The slope of a plot is =dYdX =Change in YChange in X =Y2 - Y1X2-X1

Q: proton ratio describes a radioactive element's half-life. up this concept because they wanted to…

A: We will choose Correct option

Q: (A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true…

A: True false