100+ Master’s Level Experts in Chemistry And Related Subjects Will Do Your Written Homework in 3-6 Hours

No matter what kind of academic paper you need, it is simple and secure to hire an essay writer for a price you can afford at Chemhomeworkhelp. Save more time for yourself.

1

HAPPY CUSTOMERS

%

SATISFACTION RATE

ACTIVE WRITERS

Basic features

  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support

Ondemand options

  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading

Paper Format

  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Affordable prices

HIGH SCHOOL
FROM

$10 / PAGE

COLLEGE
FROM

$13 / PAGE

Our prices depend on the urgency of your assignment, your academic level, the course subject, and the length of the assignment. Basically, more complex assignments will cost more than simpler ones. The level of expertise is also a major determinant of the price of your assignment.

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

 

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26

Chemistry Homework Help- Chemistry Answers

College students looking for chemistry homework help tend to find specific topics uncomfortable and difficult to comprehend. Hiring experts online becomes the best option as they provide comprehensive and procedural solutions enabling students to grasp readily. Besides, it results in the submission of top-quality chemistry assignments suitable for students to score excellent grades in the subject. If you find any chemistry assignment tricky and with the potential to earn you undesirable grades, considering chemistry homework help online is essential.

With chemistry homework help, students get a seamless approach to submitting flawless and high-quality papers that significantly boost their overall score. Yet, it is essential to learn about a platform that delivers the best chemistry assignment help services. Here is what to know about an online assignment help service that gives first-rate chemistry solutions.

 

Get Quality Chemistry Homework Help Online

Most students term chemistry as an intriguing science subject full of exigent formulas, atoms, elements, chemicals, molecules, and compounds. Some students even find the subject challenging during the introductory period before getting to study independent concepts. Such a reputation has led students often asking, ‘can you do chemistry homework and deliver good quality papers?’ to anyone capable of helping them.

Chemhomeworkhelp.com understands such scenarios hence comprises a well-informed, passionate, and experienced team of chemistry helpers. They understand the chemistry subject well and can provide homework help to students seeking professional chemistry help online. Our chemistry experts can handle the assignment efficiently while providing explanations for a better understanding. Coupled with perfectly formatted, unique, and immaculate chemistry papers, you get top-quality chemistry papers that earn you the grade you desire.

 

Find Chemistry Help for All Your Chemistry Problems with Ease

Several chemistry homework help platforms promise to deliver the best services, but a few keep their end of the bargain. Unlike such services, Chemhomeworkhelp.com never disappoints whenever you need help with chemistry homework on our platform. But what makes us unique from the competition?

  • Guaranteed Excellent Grades: Different students have varying chemistry assignments that can affect their final results when they score low. Our chemistry homework helper can help submit the best paper for top grades.
  • Money-Back Guarantee: Whenever you pay for chemistry assignment help, you expect the best worth your money. Chemhomeworkhelp.com ensures you get the best service; if not, we’ll refund your money. We also offer refunds if you make double payments to ensure you are always satisfied with us.
  • Save Time: Getting research materials and finding time to write your paper can be time-consuming. The best approach is hiring an expert to help you with such instances and save you valuable time.
  • 24/7 Customer Support: When getting help with chemistry homework, you may, at times, require detailed solutions from company representatives. We ensure you get prompt customer support as we have reliable customer support to answer queries and complaints around the clock.

 

Untitled design 26

Find the Best Chemistry Homework Helpers for Your Chemistry Tests and Exams

Typically, most students find chemistry subject overwhelming, more so when assigned assignments that seem undoable. Some even have a bad attitude towards the subject, making it even harder to solve simple tests. This is the primary reason why most of them opt for chemistry homework help websites that offer such services.

When you hire the right platform, you gain access to the best chemistry tutor or helper who can make the subject enjoyable, simple, and exciting. Notably, you’ll get new ideas on how to handle such problems prepared procedurally. Online chemistry tutors can provide stepwise approaches while allowing you to get detailed explanations on some topics you find problematic. In turn, students can attend different chemistry exams and score high in this subject.

The Process of Paying Someone to Do My Chemistry Homework for Me

If the deadline is imminent and you have a chemistry assignment yet to be completed, hiring an expert becomes the best possible solution. But you can become confused wondering how to access professionals at Chemhomeworkhelp.com. The process is straightforward, whether you need high school or college chemistry homework help. However, paying our exerts depends on your assignment’s nature; soft copy, hard copy, or online class.

  • Soft Copy Chemistry Assignment: If you have a soft copy assignment in PDF, word document, or any other format, you can readily attach your chemistry assignment through the order form or mail it to us. Our customer support will evaluate your assignment and provide a quote. After payments, a chemistry paper will get to work on your paper immediately.
  • Hard Copy Assignments: For hard copy chemistry assignments, you need to take a clear and high-quality photo of the homework and attach it through our order form. In case you experience any difficulties, feel free to contact us for assistance.
  • Chemistry Online Classes: We also offer online classes for chemistry problems, which are solved in real-time. With this, you need to provide your login credentials, and we’ll assess your assignment and later provide a price quote. After settling your payments, our chemistry tutors will work on your assignment and deliver within your timeframe.

Finding Chemistry Homework Help Is Easy.

Today, chemistry homework help has become an essential tool for students to succeed in the subject. This is because online chemistry helpers simplify existing problems, making them seem simpler. Sequentially, students discover effective means of handling such problems and score high grades.

So, the next time you say, ‘I need help with my chemistry homework,’ Chemhomeworkhelp.com is the place to be as you’ll never regret choosing us. Let us know what you need, and we’ll gladly assign our proficient writers specializing in the topic to handle the problem for you. That said, our chemistry experts can provide below academic help within the subject.

Help with Analytical Chemistry Homework

Analytical chemistry is an approach used in science to determine a given substance or material’s chemical composition. It involves loads of lab work to separate, extract, residue, and filtrate while using different instruments to analyze either qualitative or quantitative. Lab reports hence come in to showcase your results to your professor. If you find it hard to do so, Chemhomeworkhelp.com can help you submit the best lab report.

Help with Physical Chemistry Homework

This is where physics interacts with chemistry, and students unfamiliar with physics basics are likely to fail. Typically, this chemistry concept focuses on molecular levels and energy exchange, which are the most difficult assignments. When you face such problems, the first thing is trying to learn where to get help with chemistry homework and get the grades you desire. We can help you understand the principles of physics chemistry and submit quality assignments.

Help with Quantum Chemistry Homework

It is no doubt quantum chemistry is the most complex topic as it combines both theory and lab reports, including quantum mechanics and physical models. It also includes computation chemistry and quantum theories, atoms and molecules. When assigned a quantum chemistry homework, you may become bemused and begin searching ‘quantum homework help chemistry,’ intending to find helpers online. Save the hassle and stress and hire a quantum chemistry expert at Chemhomeworkhelp.com.

Help with Organic Chemistry Homework

Organic chemistry is the study of organic compounds, including finding individual structures and learning how they react. Several organic concepts, such as planar geometry and hybridization, are challenging to students. With this, it requires organic chemistry homework help to enable students to ease through complex concepts. Chemhomeworkhelp.com consists of organic chemistry tutors to provide real-time solutions and written solutions from our top-rated chemistry helpers.

Help with Inorganic Chemistry Homework

Homework help high school chemistry, including colleges and universities, applies to inorganic chemistry, which involves compounds without C-H bonds. Like organic chemistry, students struggling with inorganic chemistry assignments can use our services to get prompt solutions from our experts. Chemhomeworkhelp.com hires the best team to ensure you get the best from us for inorganic chemistry assignment help.

Help with Chemistry Homework on Any Topic

Several other chemistry topics, including polymer chemistry and surface chemistry, can be uncomfortable to students. At Chemhomeworkhelp.com, we can help you get through any topic as we have highly qualified and chemistry experts on our platform. Besides, we offer chemistry homework help chat that ensures we remain in touch with your writer or interact with a chemistry tutor swiftly.

Can You Make My Homework Look Better?

Nothing makes Chemhomeworkhelp.com stand out in the industry than delivering premier chemistry assignments to students from different study levels. Whether you need AP chemistry homework help or have a problem with particular topics, we are who call. We have the best writers who provide procedural solutions to the problems while writing it perfectly without any grammatical errors. Besides, we provide comprehensive checking, editing, and proofreading services to guarantee authentic and flawless assignments even when you seek chemistry homework help balancing equations.

That said, yes! We can make your homework better and with higher chances of earning better grades. Our online chemistry tutors also play a vital role in providing real-time solutions to assignments on our websites, unlike using a chemistry help app. Chemhomeworkhelp.com, therefore, is the best platform that gives the best chemistry homework help in the industry.

Chemistry homework help has proven to become essential for students finding specific chemistry assignments tricky. Besides, it accompanies several benefits than getting top-quality papers to earn an A or B in the overall score. Chemhomeworkhelp.com, therefore, remains the right platform that gives unrivaled chemistry homework solutions to different students.

Delivery

We know how important any deadline is to you; that’s why everyone in our company has their tasks and perform them promptly to provide you with the required assistance on time. We even have an urgent delivery option for short essays, term papers, or research papers needed within 8 to 24 hours.

We appreciate that you have chosen our cheap essay service, and will provide you with high-quality and low-cost custom essays, research papers, term papers, speeches, book reports, and other academic assignments for sale.

24/7 support

We provide affordable writing services for students around the world. That’s why we work without a break to help you at any time, wherever you are located. Contact us for cheap writing assistance.

"; Nuclear Decay Experiment 5 Lab Report - Chem Homework Help
Nuclear Decay Experiment 5 Lab Report

I’m working on a chemistry report and need support to help me understand better. Please provide data tables, graphs and answer all questions with calculations if needed!

Virtual General Chemistry Laboratory

 

Activity

Age

Sample

(counts/sec)

(yr)

Present-day materials

  
 

wood

 

0

paper

 

0

bone

 

0

Archaeological objects

  
 

bone, Bering land bridge

  

wood, tomb of pharoah Zoser

  

bone, La Brea tar pits

  

paper, Dead Sea scrolls

  

skull, Laguna Beach, CA

  

wooden timber, Stonehenge

  

bone, Pedra Furada, Brazil

  

wooden beam, India

  

word image 802Nuclear Chemistry

Experiment 5 – Radiocarbon Dating

Name ___________________

Nuclear Decay

The action of the particles in the nucleus of atoms are not very well understood, but we do have a picture of what these particles can do.

We do know that a nuclear particles can convert to other particles. Unstable nuclei (radioisotopes), which means that the nucleus will change to become more stable, decay by emitting radiation to get rid of excess energy. The radiation can be emitted as positively charge alpha particles (α), negatively charged beta particles (β), or gamma rays (γ) Neutrons can also be released and x-rays are sometimes a byproduct of a decay.. These are all high energy ionizing radiation, meaning they have enough energy to remove an electron from an atom. We know this as electron binding energy or ionization energy.

Individually, we know an α particle is the same as a helium nucleus with two protons and two neutrons. A β particle is an electron, and γ rays are not particles at all but are electromagnetic radiation. A neutron is the nuclear particle we are familiar with.

Other particles involved in nuclear decay are positrons (an antielectron) and neutrinos (and antineutrinos). We give these names to particles and events that we do not completely understand, but research is being done to better know what is going on in terms of quantum physics.

We use the decay of radioisotopes to perform radiocarbon dating. By using the β-emitter, C-14, we can estimate the age of an artifact. In nature the C-14 reacts with oxygen in the atmosphere to form carbon dioxide, which eventually makes its way into the biosphere where it is taken up by plants during photosynthesis. Animals eat the plants—and we eat both animals and plants—ultimately exhaling the C-14

again as CO2. In this way a steady concentration of C-14 is maintained in living tissue and in the atmosphere. (Although C-14 emits ionizing radiation, and can therefore damage cells, the natural abundance of C-14 is very small: there exists only one atom of C-14 in every 1012 atoms of carbon.)

Once an organism dies the C-14 is no longer replenished, and the amount of C-14 steadily decreases as it undergoes β-decay. Thus, when a sample of that scroll, the mummy, or the bone is measured for its C-14 content, there is less of it than in a living organism. If we assume that the person who was mummified had the same amount of C-14 in her tissues when she was alive as we do today, and we know the rate at which C-14 decays, we can determine her age.

The half-life of a radioisotope is the time it takes for one-half of a sample to decay. Carbon-14 has a halflife of 5730 years, which means that after that period of time, only half of the C-14 that was originally present in an organism would remain. After another 5730 years, only half of that quantity would be present, or one-quarter would remain, and so on. If we were to start with 12.0 g of C-14, the amount remaining after several half-lives is shown below.

Time Elapsed

0 yr

5,730 yr

11.460 yr

17,190 yr

Number of half-lives

0

1

2

3

Amount of C-14

12.0 g

6.0 g

3.0 g

1.5 g

Fraction remaining

1

½

¼

 

 

Similarly, the radioactivity of a sample (as measured by a Geiger counter) will decrease by the same fraction. Note that if a sample is either too young or too old, this method will not work. If a piece of bone is only a couple years old, the process cannot be used because there will have been too little decay of C-14 for us to be able to measure a decrease. Likewise, if it is more than about 40,000 years old, there will be too little C-14 left to measure accurately.

What we do know is about the energy and the effects of these decay processes and in this investigation we will look at the individual decay particles. This investigation is adapted from an activity written by David R. Anderson at the University of Colorado at Colorado Springs.

Prelab Questions:

  1. Write the balanced equation for the beta decay of !”C.

 

 

  1. Write the balanced equation for the alpha decay of #$%U.

 

 

  1. Another type of decay is electron capture. Write the balanced equation for electron capture in #&’Bi.

 

 

  1. Another type of decay is neutron capture. Write the balanced equation for neutron capture in !”N.

 

 

 

Procedure (experiment 1):

  1. Go to: https://uccs.edu/vgcl/nuclear-chemistry/experiment-1-radiation-and-matter. You will need to have Flash enabled.
  2. Click on the apparatus to start the lab. (If you are using Internet Explorer, you will have to click once to activate the control, then click again to start the lab.) The experimental setup includes three radioactive sources (one each of an α, β, and γ emitter), different types of shielding, and the apparatus to measure the radioactivity. On the right is a Geiger counter that will measure radiation in counts per second. On the left is a holder for the radioactive source, and in the middle is a holder for the shielding material.
  3. Click on the drop-down list of radioactive sources and choose radon-222, an α emitter. Drag the source into the sample holder. (There is information on each nuclide in the box that pops up. After reading it, you can close the box, or it will close on its own when you click on something else.)
  4. Click on the Geiger counter switch to turn it on. Read the activity from the gauge. (The needle on the gauge may move around a bit. You should try to get an average reading. Note that the scale on the gauge is not linear.) Record the activity of the sample in counts/sec in the data table below.
  5. Click the switch again to turn it off.
  6. Click on the drop-down list of shielding materials and choose one. Drag the shielding into its holder in the apparatus.
  7. Again click on the Geiger counter switch, and again record the activity in the appropriate column in the data table.
  8. Repeat steps 6 and 7 using the other types of shielding material. Record the activity values in the appropriate cells of the data table.
  9. Repeat steps 3–8 for the other radioactive sources: iron-59 (β) and strontium -85 (γ).

Data Table:

 

Source

Type of Radiation

  

Activity (counts/sec)

 

No shielding

Paper

1 mm Cardboard

1 mm

Aluminum

1 mm Lead

Radon-222

α

 

 

 

 

 

Iron-59

β

 

 

 

 

 

Strontium-85

γ

 

 

 

 

 

 

Analysis:

  1. What was the effect of the type of shielding on alpha particles? What kinds of materials would provide sufficient to protect a person working with alpha emitting sources?

 

 

  1. What was the effect of the type of shielding on beta particles? What kinds of materials would provide sufficient to protect a person working with beta emitting sources?

 

 

  1. What was the effect of the type of shielding on gamma particles? What kinds of materials would provide sufficient to protect a person working with gamma radiation?

 

 

  1. From your data, which particle has the greatest penetrating power? Justify your answer considering the physical decay particles.

 

 

 

  1. Iodine-131, used for the imaging of the thyroid and for the treatment of goiter, hyperthyroidism, and thyroid cancer, emits both beta particles and gamma rays. What type of shielding should be used when working with I-131? Why?

 

 

 

 

 

Procedure (experiment 2):

    1. Go to: https://uccs.edu/vgcl/nuclear-chemistry/experiment-2-types-of-radiation. You will need to have Flash enabled.
    2. Click on the apparatus to start the lab. (If you are using Internet Explorer, you will have to click once to activate the control, then click again to start the lab.) The experimental setup includes a number of radioactive sources, different types of shielding, and the apparatus to measure the radioactivity. On the right is a Geiger counter that will measure radiation in counts per second. On the left is a holder for the radioactive source, and in the middle is a holder for the shielding material.
    3. Click on the drop-down list of radioactive sources and choose a nuclide. Drag the source into the sample holder. Record the name (e.g., iron-59) or the symbol (e.g., Fe) of the source in the data table. (There is information on each nuclide in the box that pops up. After reading it, you can close the box, or it will close on its own when you click on something else.)
    4. Click on the Geiger counter switch to turn it on. Record the activity of the sample in counts/sec. (The needle on the gauge may move around a bit. You should try to get an average reading. Note that the scale on the gauge is not linear.)
    5. Click the switch again to turn it off.
    6. Click on the drop-down list of shielding materials and choose one. Drag the shielding into its holder in the apparatus.
    7. Again click on the Geiger counter switch, and again record the activity in the appropriate column in the data table.
    8. Repeat steps 6 and 7 for the other types of shielding material.
    9. Repeat steps 3-8 until you have identified the type of radiation given off by several nuclides. Try to find at least one for each type of radiation: α, β, and γ.

Data Table:

Source

No shielding

Paper

1 mm

Cardboard

1 mm

Aluminum

1 mm Lead

Type of Radiation

Justification

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Analysis:

Table 1 – Approximate Penetration Depths of Radiation in Various Materials

 

α

β

γ

Body Tissue

0.05 mm

5 mm

>50 cm

Aluminum

0 mm

2 mm

30 cm

Lead

0 mm

0.4 mm

30 mm

 

1) From your data and the information in Table 1, determine the type of radiation emitted by each of the radioactive sources and enter it in the table and give a justification.

 

Procedure (experiment 4):

    1. Go to: https://uccs.edu/vgcl/nuclear-chemistry/experiment-4-radiation-and-distance. You will need to have Flash enabled.
    2. Click on the apparatus to start the lab. (If you are using Internet Explorer, you will have to click once to activate the control, then click again to start the lab.) The experimental setup includes the radioactive source (gallium-67, a γ emitter), a ruler to measure the distance from the source to the detector, and a Geiger counter to measure the radiation in counts per second.
    3. Click on the drop-down list to retrieve the source. Drag the source into the holder.
    4. Click on the 1-cm mark on the ruler to position the source holder at 1 cm distance from the detector.
    5. Click on the Geiger counter switch to turn it on. Record the activity of the sample in the appropriate cell in the data table. (The needle on the gauge may move around a bit. You should try to get an average reading. Note that the scale on the gauge is not linear.) 6) Click the switch again to turn it off.
    6. Click at a point on the ruler to move the source a distance away from the detector.
    7. Again click on the Geiger counter switch, and record the activity in the appropriate cell in the data table.
    8. Repeat steps 6 and 7 for the other distances in the data table.

 

Data Table:

Distance (cm)

Activity (counts/sec)

1

 

2

 

3

 

4

 

5

 

6

 

7

 

8

 

9

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

1000

Activity (counts/sec)

 

 

0

0 2 4 6 8 10

Distance (cm) Analysis:

  1. Draw a graph of your data.
  2. What is the relationship between radiation intensity and distance? Derive a mathematical expression for the relationship.

 

 

 

 

 

  1. When a sample of phosphorus-32 (a β-emitter used to treat leukemia and pancreatic cancer) was placed 1 cm from the detector, the intensity of the radiation was measured to be 491 counts/sec. What would the activity be 2 cm from the detector? 5 cm? The effect of distance on all types of decay particles are similar.

 

 

 

 

 

Procedure (experiment 5):

    1. Go to: https://uccs.edu/vgcl/nuclear-chemistry/experiment-5-radiocarbon-dating. You will need to have Flash enabled.
    2. Click on the apparatus to start the lab. (If you are using Internet Explorer, you will have to click once to activate the control, then click again to start the lab.) The experimental setup includes a number of samples of C-14 isolated from objects discovered in archaeological excavations, and the apparatus to measure the radioactivity. On the right is a Geiger counter that will measure radiation in counts per second. On the left is a holder for the sample.
    3. Click on the drop-down list of samples and choose one. Drag the sample into the sample holder. (There is information on each sample in the box that pops up. After reading it, you can close the box, or it will close on its own when you click on something else.)
    4. Click on the Geiger counter switch to turn it on. Record the activity of the sample in counts/sec. (The needle on the gauge may move around a bit. You should try to get an average reading. Note that the scale on the gauge is not linear.) 5) Click the switch again to turn it off.
    5. Repeat steps 3-5 for the other samples.
    6. For one of the present-day materials, type its activity in the “Initial Activity” cell and hit Enter. This will generate a decay curve for C-14 based on that starting activity.
    7. For each of the archaeological objects made of that material, estimate its age using its activity and the C-14 decay curve.
    8. Repeat steps 7-8 for the other materials.
    9. Submit the completed excel file along with this lab report.

Data Table: Record your data in the Excel file nucl_expt_5_1.

 

Analysis:

  1. In what year, approximately, did the person die whose skull was discovered in Laguna Beach, CA?

In what year was the tree cut down that was used for the wooden timber in Stonehenge? (Include A.D. or B.C.)

 

 

 

  1. Given the inaccuracies in reading the Geiger counter scale and in estimating the age of an object from the graph, give a rough estimate of the error (+/- years) in the age you determine in question 1.

 

 

Order a unique copy of this paper
(550 words)

Approximate price: $22