Unit 5 Health and Toxicology Case Study 2-revised

What Do you think the old stuff and the new stuff on the chemical reaction it makes a sparker light up

Engaging ActivitiesACTIVITY 1Directions: Identify the element described in each statement.___________1. An element with 26 protons and 30 neutrons.___________2. Has a mass number of 11 and an atomic number of 5.___________3. Has 117 neutrons and an atomic number of 78.___________4. Has 69 neutrons and 50 protons.___________5. Has 125 neutrons and an atomic number of 85.

I Write a balanced equation for * 106 pd(a,p) 109 46 47

Hydrochloric acid can be prepared by the following reaction: 2NACI(s) + H2SO4(aq)2HCI(g) + Na2SO4(s) What mass of HCI can be prepared from 2.00 mol H SO4 and 150. g NaCl? Multiple Choice 2.57 g 167 g 93.6 g 11 asus COLLECTION prt sc delete 112/A insert f7 f8 f11

A Water Quality Standard will be developed for radioactive isotope “Iron-55” which has physical (radioactive) and biological half-lives of 2.7 and 1.6 years, respectively. Through toxicological studies scientists decided “spleen” as the critical organ and the critical accumulation of Iron-55 in spleen has been determined to be 0.5 gram. Assuming radioactive exposure is only due to drinking water consumption and average life expectancy is 75 years. a) What should be the Maximum Concentration Level (MCL) as mg/L for Iron-55 in drinking water.  b) How long does it take to eliminate 95% of this radioactive isotope from human spleen after the person gives up on drinking water contaminated with Iron-55?

Which of the following statements is true regarding the picture below. 18 19 20 21

Please help me answer these subunits!

Experiment 4: Preparation and Properties of Hydrogen and Oxygen Gases Toriana Mieer -Jones Name: Section: Lab Instructor: L/26 Date: Pre-Lab Exercise 4 1. In this experiment, simple chemical reactions are used to generate small quantities of hydrogen and oxygen gases. These methods would be too expensive and too complicated if large quantities of these gases were needed, however. Use your textbook, a chemical encyclopedia, or an online source to look up the major industrial methods of preparing very large quantities of these gases. Summarize your findings here. ono od te led bateono to n

20 Balance the following equation and identify the reaction type (Spelled Correctly!): 02 Reaction type 18 21

18   Which of the following releases Hydrogen Sulfide? a. Solar Energy b. Biomass Energy c. Wind Energy d. Geothermal Energy

Numerate the most important chemical hazards?

Create a model that explains a nuclear reaction within the context of its application :  Nuclear fission reactors  An equation for the nuclear reaction in your model  A visual representation of the nuclear reaction occurring  A written explanation of the reaction and how energy and matter are transformed and conserved throughout the reaction  The context and/or application of the nuclear reaction  Where does the reaction occur?  What impact or relevance does this reaction have to society?

#33

It is found that 2.0 x 10-5 mol 222Rn (t/2 = 3.82 d, atom mass = 222) has seeped into a closed %3D %3D basement with a volume of 2.0 x 103 m3. How many atoms of 222Rn will remain after 24 hours? A. 2.5 x 1018 B. 1.0 x 1019 C. 8.5 x 1018 D. 4.3 x 1020

For this question you will need to work all of your answers on scratch paper. Once completed, upload an image of your answers showing all work and dearly identifying your answers. Use the Browse My Computer button to upload an image. The following data was collected for the formation of N205. By reaction of NO2 and 0₂ 4NO2 02 2N₂Os Time in Mantes 10.0 20.0 30.0 40.0 50.0 60.0 70.0 10.0 90.0 100.0 [0₂] units of Molarity 0.0078 0.0077 0.0075 0.0072 0.0065 0.0063 0.0057 0.0048 0.0056 0.0021 0.0010 a. Show all your work, what is the average rate of the reaction? b. Show all your work, what is the instantaneous rate from 10.0 to 40.0 minutes? c. Show all your work, what is the instantaneous rate from 30.0 to 60.0 minutes? d. Show all your work, what is the instantaneous rate from 50.0 to 90.0 minutes?

Nuclear __________ powers the sun and hydrogen bombs.     fission     fusion

How is randon gas 222 dangerous?

Name: Course/Year/Sec Instructor/Professor Group No: Date Performed: Date Submitted: Activity No. 4 CHANGES IN MATTER OBSERVATION / DISCUSSION: A. Physical and Chemical Changes Process 1. heating naphthalene Observations Type of Change Explanation 2. heating iodine 3. iron filings + HCI 4. heating copper sulfate 5. silver nitrate + sodium chloride 6. igniting magnesium ribbon 24

Unit 3: Energy Changes & Rates of Reaction Topic 1: "Nuclear reactors should be used instead of burning fossil fuels to supply electrical energy". Do you agree or disagree? Justify your answer from economic, environmental, and scientific perspectives. Be sure to include a description of how nuclear reactors work.

Only 100% sure experts solve it correct complete solutions each okk take 24hrs but solve all okkk must accurate students own words okk don't use Ai okk.

Can you identify the acceptable exposure limits for affected populations in occupational and nonoccupational environments?

SS C cm 1 GtG tC FCX in SH U njmpLGQQmzAe4FI77iAeY/edit#slide%-id.g112e600b836_0_44 个 Help Accessibility Last edit was 2 hours ago Arial 21 BIUA work Day 1- 18 What were some potential human errors that could have occurred when calculating the mass before and after the reaction? Add these to your drawing on page 60.

Compare nuclear energy to solar energy and fossil fuels in terms of safety and greenhouse gas emissions.

None

3) Carbon-14 is constantly being produced in the upper atmosphere, and the amount is in equilibrium. As long as an organism is alive, it keeps its carbon isotopes in balance with the atmosphere, but at soon as it dies, it stops taking up new 14C, and so the geologic clock starts. You found a shell buried in sedimentary layers, which has 6% of its original 14C left. Determine the age of the shell. Show your work.

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