Garcia Module Three Major Activity Database Documentation

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.

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.

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

Question : Some deposits were observed in water preserved in aluminum containers after two to three days. What could the deposit be ? What is the reason for the formation of these deposits ?   Kindly Do not Spam or Copy from Other Websites Give Proper Answer with Correct Explanation Asking this Question with a hope to get correct answer Bored of Seeing Internet Answers All the Best for Solving this Question

Which one is it?

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?

Part A Which route would be better: one that produces a small amount of hazardous waste or one that produces a large amount of nonhazardous waste? Which green chemistry metric accounts for this dilemma? Match the items in the left column to the appropriate blanks in the sentences on the right. Reset Help minimize The best route is because it should the E-factor and maximize the effective mass yield. the one that produces a small The accounts for this dilemma as it looks at the amount of relative to amount of hazardous waste the amount of E-factor product made the one that produces a large amount nonhazardous waste materials used difficult to choose hazardous reagents used waste produced Submit Previous Answers Request Answer

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?

You will research how the energy is extracted or produced and try to be very detailed about the process and the chemistry involved (stating equations and reactions). You will also research the impact on the environment when using or producing fuels. Investigating fossil fuel: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words Investigating nuclear energy: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words Investigating biofuel: How is it produced? What is the chemistry involved (stating equations and reactions)? What is the impact on the environment? 300-400 words

Answer question 1 please

+ terface/acellus_engine.htm?ClassID=1467683063 Use the data below to determine the mass ratio of iron to oxygen for compound 2. Compound 1 2 Et onal Academy of Science. All Rights Reserved. Mass Fe (grams) 15.55 20.98 [20:1 Enter the answer that belongs in the green box. Iron Ratio Cmpd 2 Mass O (grams) 4.45 9.02 Sh Enter

Dr. X claims that she has found a new remedy (carrot extract) to cure acne. She scores an interview with the science writer for a local newspaper, and gets a brief article written about her and her claims in that newspaper. The article does not contain any experimental evidence, but mentions that Dr. X accidentally splashed some carrot extract on her face and found that the acne was reduced a few days later. Student Y finds the article and cites it as a source for a paper he is writing for class, as evidence that acne has been cured. (a) Is this finding a fact, a theory, a hypothesis, or an observation? Explain why you think so. (b) Was it OK for Student Y to use the newspaper article as evidence for his paper? Explain why or why not.

Firefox File Edit View History Bookmarks Tools Window Help my.CSMD.edu I Module 12 HW Chi wr NWP Assessme X De Module 9 HW Cha W NWP Assessment I Module 11 HW Che w NWP Assessment O 8 https://education.wiley.com/was/ui/v2/assessment-player/index.html?launchld=b0085ec6-77d3-4053-89d4-c26a8188beb3- E Module 12 HW Chapter 21 - Selected Exercises Question 5 of 8 -/1 E Starting with diethyl malonate, and using any other reagents of your choice, show how you would prepare the following compound: Fill 1) ? 2) ? Que Multi EtO 3)? 4) ? 5) ? Choose from the following list of reagents: OEt HO. Ques Multipa Questi A B D Multistep CH3Br LIAIH4 LDA NaOEt / EtOH Viewing Multipart Question E G H. Molecular Dra NaOH EtBr MgBr, H,O H20, heat heat Question 7 Multipart Question 8 Multistep MacBook Air esc F2 F3 F4 FS F10 @ 23 $ % & 1 2 3 4 7 8 W E R Y tab A S D F caps lock C V shift alt coms control option command

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

CD Page view O₂N A Read aloud 1015MSC Chemistry of Biological Systems II 2020 OH TAdd text Dra

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

3) You're wandering around and come upon an interesting looking rock. The rock is slightly radioactive, so you analyze it. The resulting data is as follows: Elapsed Time (s) Counts 962 50 891 100 718 150 598 200 531 250 448 300 413 350 334 400 308 450 287 500 202 550 178 600 154 a. Calculate the value of k using any two of the above data points. b. Use your value of k to determine the half-life of this sample.

Compare and contrast acid rain with the concept of acid mine drainage. How are these similar and different in terms of sources, environmental impact, and remediation? encoded answers please

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.

12-15 please

View History Bookmarks People Tab Window Help S, Amaya K - Outlo x B Chapter 5- CHEM-1110-941- x Question 20 - Chapter 5- Con x education.com/ext/map/index.html?_con%3con&external_browser%3D0&launchUrl=https%253A%252F%252Flms Saved 3 attempts left Check my work Enter your answer in the provided box. It takes 155 s for an unknown gas to effuse through a porous wall and 97 s for the same volume of N2 gas to effuse at the same temperature and pressure. What is the molar mass of the unknown gas? g/mol ... 115 MAR 1664 18 ottv A

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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.

In 2021, Beta Corporation earned gross profits of $790,000. a. Suppose that Beta was financed by a combination of common stock and $1.03 million of debt. The interest rate on the debt was 9%, and the corporate tax rate in 2021 was 21%. How much profit was available for common stockholders after payment of interest and corporate taxes? b. Now suppose that instead of issuing debt, Beta was financed by a combination of common stock and $1.03 million of preferred stock. The dividend yield on the preferred was 7%, and the corporate tax rate was still 21%. Recalculate the profit available for common stockholders after payment of preferred dividends and corporate taxes. Note: Do not round intermediate calculations. Enter your answers in dollars not millions and round your answers to the nearest whole dollar amount.

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

A population numbers 16,000 organisms initially and decreases by 8.9% each year.please type answer in words don't image upload thank you.

口 A docs.google.com Classroom | Google for Education Alchemy Lesson 20 & 21 Worksheet Andres Carrill Andres Carrillo - Alchemy Lessons 20 & 21 Worksheet Update Apple ID S Some account servi available until you sig File Edit View Insert Format Tools Add-ons Help Last edit was 2 days ago 100% Normal text Arial 11 BIUA E = E = EE E - E E X 1 2 3 4 .. 6 I 7 O 8 1 IC 5 AIV-20: Getting Connected (Writing lonic Compounds) Part 1: Putting together lonic Compounds lonic compound Metal Number of cation nonmetal number of anion total total charge = 0 valence valence number of electrons electrons valence electrons NaF, sodium fluoride Na Na + (+1)+(-1) = 0 F- 8. MgO, magnesium oxide Mg 02- (+2) + (-2) = 0 MgCl2, magnesium chloride Mg CI 7 16 (+2) + 2(-1) = 0 Ne, neon Ne 8 BeF2, beryllium fluoride Be MgS, magnesium sulfide CaCl,, calcium chloride Na Br K Se Al Al203, aluminum oxide Al Al F

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Please do question 5 for me and please don’t return in it just write one sentence for each box

Activity 3 Evidences of Chemical Change Objective: Identify signs that chemical changes are taking place. Write down the evidences which prove that the chemical change occurs in each process. You can use Google or YouTube to search for the possible results of the given chemical system. Chemical System 1. Decaying of food. Evidence of Chemical Change 2. A silver spoon tarnishes. 3. An iron nail rusts. 4. Cooking of adobo. 5. Lithium in cell phone battery 6. Coconut water turning sour. 7. Pineapple juice ferments. 8. Ripening of green mango. 9. Liquid milk is added to vinegar in a glass. 10.A firecracker explodes. 7

Dear tutor please reword whats writeen and add more details to the explanation