A chemist attached a NFPA symbol (illustrated below) on the bottle of a newly manufactured chemical. If the chemical is unstable if heated, what must be the reactivity grade of the hazard in the posted area?

Q: Radioactive sodium-24, administered as 24NaCl, is given to treat leukemia. If a patient must receive…

A: Given that: amount of sodium-24 needed by patient = 190 μCi/kg amount of sodium-24 in the solution…

Q: Nuclear Equations

A:

Q: Stephanie is a radiation worker, as part of her job she spent 2 weeks fixing a valve in high level…

A: 3.3 Ci/cm = 3.3 x 109 Bq/cm 2.5 mSv/Bq x (3.3 x 109 Bq/cm) = 8.25 x 108 mSv 8.25 x 108 mSv = 8.25 Sv…

Q: 9. Who discovered optical activity? a) J. H. van't Hoff b) J. A. LeBel c) L. Pasteur d) Kekule

A: The characteristic of a molecule due to which it is able to rotate the plane-polarized light is…

Q: Write a chemical equation for each of the following radioactive decay processes:  thorium-232 decay…

A:

Q: brain scan uses the

A: The recommended dosage is only 40mCi. Since we know that 260 mCi corresponds to only 40 mL

Q: How many protons and neutrons are present in the following nuclide:     2041Ca  ?How many protons…

A: The correct answer is given below

Q: Can you identify the acceptable exposure limits for affected populations in occupational and…

A: Occupational exposure limits (OELs) are defined as the time-weighted average concentration of a…

Q: Which radioactive element if ingested is primarily Incorporated  into bone tissue A. Uranium B.…

A: Uranium has little health hazard till it is not inhaled or ingested in human body.   It is…

Q: Directions: Use the graph to answer the question. Strontium-90 is a radioactive form of the element…

A: The question is based on the concept of chemical kinetics. we have to determine the time required by…

Q: What compound is C8H11NO MW=137, using the picture below

A:

Q: One vial of COVID-19 vaccine, when thawed, contains 0.45 mL of solution. Before it is administered,…

A: Given: Concentration of NaCl = 0.154 M  Volume of vaccine = 0.45 mL = 0.00045 L…

Q: TRUE OR FALSE 1. The age of fossils can be traced using isotopes C12 and C14 called Carbon dating…

A: Radiocarbon dating is based on the simple principle that all living things absorb carbon from the…

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

A: True false

Q: The mercury-201 nuclide radioactively decays by electron capture. Write a balanced nuclear chemical…

A: Electron capture : In electron capture,  the inner shell electron is pulled into the nucleus where…

Q: A 0.82 gram sample of impure aluminum carbonate liberated carbon dioxide gas when HCI was poured…

A:

Q: 6. A certain drug is effective in treating a disease if the concentration remains above 100 mg/L.…

A: Solution Consider the statement, The description about a certain drug being effective in treating a…

Q: Sea water contains an average of 1.08 x 10 ppm of Na". Calculate the molar concentrations of Na…

A:

Q: a 25-mL sample of chronium-51 contains 1.00 mCi. If a paitent is to recieve a 50-uCi dose to undergo…

A: The conversion of 50-uCi to mCi is shown below:

Q: Radioactive sodium-24, administered as 2"NaCl, is given to treat leukemia. If a patient must receive…

A: The dose of the sodium-24 isotope (leukemia treatment) needed by the patient = 190µCi/kg Activity of…

Q: Why toxic effects of carbon monoxide are strong in case of human beings?

A: Carbon monoxide is a neutral oxide which does not show basic or acidic properties when dissolved…

Q: - calculate the dose in mcg/kg/min.

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Fill in the missing symbol in this nuclear chemical equation. 147 143 Sm 62 60 Nd +

A: we need to fill the missing element

Q: The mercury-201 nuclide radioactively decays by electron capture. Write a balanced nuclear chemical…

A: We have to predict the reaction of mercury capturing electron.

Q: Draw atomic depictions for(a) ⁴⁸₂₂Ti; (b) ⁷⁹₃₄Se; (c) ¹¹₅B.

A: The structure of atom shows that it contains electrons, protons and neutrons. Neutrons and protons…

Q: Fill in the missing symbol in this nuclear chemical equation. "c - 0+ e 14

A: The reaction given is, => 146C -------> AZX + 0-1e Where AZX is the missing symbol.

Q: Chemically active surfaces are seen on alumina-containing zeolites. Interpret this statement.

A: Answer -

Q: A drug has a half life of 12 hours. How much of the drug will remain in the patient 36 hours after…

A:

Q: Which Isotope has the same number of neurons as phosphorus-31

A: Isotopes are the elements having same atomic number but different mass number i.e. different number…

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

A:

Q: Thallium-201 is a radioactive isotope used in brain scans. If the recommended dose is 3.8 mCi and…

A: Given thallium-201 is a radioactive isotope used in brain scans, we are asked to calculate the…

Q: Fill in the missing symbol in this nuclear chemical equation. cher 0+HHe +e bio 20

A:

Q: Differentiate between the followings. 1. Atomic number and mass number: 2. Isotope and radioisotope…

A: Atomic number Mass number The atomic number is the total number of protons in the atom or ion.…

Q: In the Styrofoam ball investigation, when the plastic rod is rubbed on the cat's fur, it is…

A: When plastic rod is rubbed against cats fur, the fur acquire positive charges and due to this the…

Q: A substance has a half-live of 5 minutes.  We have 50 grams of substance.  If 60 minutes has passed,…

A: The solution is as follows :

Q: 2. 370

A:

Q: Numerate the most important chemical hazards?

A: Chemical hazards can be defined as a substance that causes harmful effects on human health.

Q: lodine-131 is used to treat Graves disease, a disease of the thyroid gland. The amount of 1311 used…

A: Dose is 86 microcuries per gram of thyroid gland.

Q: A patient is given a 0.05 of 6 hours. How long will it be until mg dose of e which has a holf-life…

A:

Q: Fill in the missing symbol in this nuclear chemical equation.

A: Given  92 U^238+ [] ->  92 U^239

Q: nuclear equations

A:

Q: Studying the decay of radioactive isotopes in dead organisms helps scientists to identify fossilized…

A: A nuclear reaction involves the conversion of the nucleus with the emission of certain nuclei or…

Q: You have a 11.5 mg sample of blood that contains various proteins. Hemoglobin is the only protein in…

A: from the quantitative analysis we can get the idea about the amount of Hb present in the blood .

Q: Radioimmunoassay: Various hormones are tested using radioimmunassays. Radioactive tracers are…

A: Given: High amount of hormone of interest To find: Expected radioactivity reading in a sample

Q: Which route would be better: one that produces a small amount of hazardous waste or one that…

A: The correct answer is given below

Q: 20290942 I Herbisites IL Insectisides III. Fungusides Which of the terms above include into the…

A: Introduction :  Pesticides can be defined as the any substance that kill pests, pesticides are…

Q: What are the elements formed in big bang nucleosynthesis? 2. What are the elements formed in Stellar…

A: The process of formation of the new nuclei from already existing ones is called nucleosynthesis. It…

Q: If a patient takes a drug with a half life of 20 hours in the body, after how much time with 1/16 of…

A: The half-life of the drug is 20 hours. For a first-order reaction, the half-life time does not…

Q: What symbol is missing from the equation: 235 25° U 92 4 He + ??? 2

A: The above reaction is a nuclear reaction. When heavy unstable nuclides collide each other then it…

Q: If a patient takes a drug with a half-life of 20 hours in the body, after how much time will 1/16 of…

A: Given data  half life : t1/2 = 20 hr final drug remain = 1/16 of initial Use the following formula…