Chemistry Homework Help- Chemistry Answers

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.

ORDER NOW

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.

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

Type of paper needed:

Pages:

550 words

Academic level:

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.

PROCEED TO ORDER

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.

PROCEED TO ORDER

Organic Chemistry Synthesis of Bromobutane Lab Report

S_N2: Synthesis of 1-Bromobutane

Alkyl halides can be prepared from their corresponding alcohols via an acid catalyzed substitution reaction. The mechanism of these acid catalyzed substitution reactions are labeled as S_N1 (substitution, nucleophilic, unimolecular) and S_N2 (substitution, nucleophilic, bimolecular). Tertiary alcohols follow the S_N1 route, primary alcohols follow the S_N2, route and secondary alcohols can follow either path.

Figure 1 Conversion of 1-butanol into 1-bromobutane by an S_N2 mechanism

The S_N2 reaction for converting 1-butanol to 1-bromobutane involves rapid protonation of the alcohol along with a concerted step where the nucleophile attacks the carbon, displacing water. The backside attack by the nucleophile is favored for primary substrates and less ideal for secondary and tertiary substrates.

The product will be verified by gas chromatography by comparing the chromatograms of the starting material, 1-bromobutane standard, and your product. Confirmation of your product,
1-bromobutane can also be performed by reacting the product with a solution of sodium iodide in acetone. The primary alkyl halide will react by means of an S_N2 mechanism with the sodium iodide to form an insoluble precipitate. The appearance of a precipitate indicates a positive result suggesting the presence of a primary alkyl halide.

OBJECTIVES

In this experiment, you will

Synthesize 1-bromobutane via an S_N2 reaction.
Confirm the presence of a primary alkyl halide using the sodium iodide test.
Verify the product by gas chromatography.

MATERIALS

Part I Synthesis of 1-bromobutane

18 150 mm test tube	1-butanol, reagent grade
two 250 mL beakers	sodium bromide
10 mL graduated cylinder	sulfuric acid, concentrated
disposable Pasteur pipets and bulb	saturated sodium bicarbonate solution
heating mantle	saturated sodium chloride solution
ring stand and utility clamp	sodium sulfate, anhydrous
sand	DI water
boiling stone	ice
5 mL glass vial and cap

Part II Analyze by Gas Chromatography

LabQuest or computer interface	acetone
LabQuest App or Logger Pro	1-butanol, reagent grade
Vernier Mini GC	1-bromobutane
1 L glass syringe	product from Part I
Kimwipes^® or paper towel

Part III Sodium Iodide Test for Primary Alkyl Halides

three 13 100 test tubes	1-bromobutane
test tube rack	product from Part I
disposable Pasteur pipettes and bulb	15% sodium iodide in acetone solution
hotplate	Wide-Range Temperature Probe or
250 mL beaker	thermometer
DI water

PROCEDURE

Part I Synthesizing 1-bromobutane

1. Obtain and wear goggles. Protect your arms and hands by wearing a long-sleeve lab coat and gloves. Conduct this reaction in a fume hood.

2. Set up the reaction.

Obtain an 18 150 mm test tube and place a boiling stone inside.

Weigh out 2.0 g of sodium bromide and transfer it to the test tube. Record the mass to the nearest 0.001 g.

Add 1 mL of water to the test tube.

Add 2.0 mL of 1-butanol to the test tube.

3. Prepare an ice water bath using the 250 mL beaker and cool the test tube.

4. Slowly add 1.5 mL of concentrated sulfuric acid to the solution in the test tube. CAUTION: Handle concentrated sulfuric acid with care. Can cause painful burns if it comes in contact with the skin.

5. Clamp the test tube to a ring stand and lower into the sand bath in the heating mantle.

6. Gently heat the mixture to boiling. Allow the mixture to reflux for one hour. Note: When refluxing the mixture, do not let the condensation ring rise higher than 2 cm to avoid the loss of reactants and product.

7. After the reflux is complete, carefully remove the test tube from the sand bath and allow it to cool.

8. Remove the lower acid layer using a Pasteur pipet. Transfer this layer to your 250 mL waste beaker.

9. Wash your synthesized 1-bromobutane with 2 mL of distilled water and remove the water with a Pasteur pipet. Discard the wash in the waste beaker. Note: 1-Bromobutane is denser than water.

10. Repeat the wash with 2 mL of a saturated sodium bicarbonate solution. Discard the aqueous layer in the waste beaker.

11. Repeat the wash with 2 mL of a saturated sodium chloride solution. Discard the aqueous layer in the waste beaker.

12. Add a pea-sized amount of anhydrous sodium sulfate to the test tube to dry your synthesized
1-bromobutane. Allow the product to dry for five minutes.

13. Carefully pipet your product into a tared 5 mL vial. Record the mass in your data table.

Part II Analyze the Product by Gas Chromatography

14. Obtain 1-butanol and 1-bromobutane standards for analysis. Be sure to label the vials.

15. Prepare the Vernier Mini GC for data collection:

Turn on the Mini GC and connect it to the USB port on your computer or LabQuest.
Choose New from the File menu of the data collection program.
To bring up the Temperature-Pressure profile, tap ► in LabQuest or click Collect in Logger Pro.
Set the Temperature-Pressure values to:

Start temperature	90C
Hold time	1 min
Ramp rate	10C/min
Final temperature	100C
Hold time	5 min
Total length	7.0 min
Pressure	9.0 kPa

Select Done to initiate the Mini GC warm up. Continue with Step 16 during warm up.

16. Clean and flush the syringe with acetone. Important: The glass syringe and needle are fragile. Handle with care. Never pull the plunger back more than 50% of its total volume.

17. Follow the process in Step 16 to clean and flush the syringe with 2-butanone.

18. Prepare for injection and the start of data collection.

Collect 0.2 L of 1-butanol for injection.
The Mini GC should now have reached the correct start temperature and pressure and the LED turned to green.
Insert the needle of the syringe into the injection port as shown in Figure 2.
Simultaneously, depress the syringe plunger and select Collect to begin data collection. Pull the needle out of the injection port immediately.

19. While the data collection proceeds, repeat Step 16 to thoroughly clean the syringe and needle.

Figure 2

word image 1194

20. Analyze your chromatogram to determine the retention time and record your result.

21. Save the file, if desired.

22. Repeat Steps 1721 for the 1-bromobutane standard and your synthesized 1-bromobutane.

23. When you have completed your final data-collection run, turn off the Mini GC.

Part III Sodium Iodide Test for Primary Alkyl Halides

24. Set up a 50°C hot water bath in a 250 mL beaker. Monitor the temperature using a
Wide-Range Temperature Probe or thermometer.

25. Set up the reaction.

Obtain three 13 100 test tubes and label 13.
Pipet 10 drops of distilled water into Test Tube 1.
Pipet 5 drops of 1-bromobutane into Test Tube 2
Pipet 10 drop of your product into Test Tube 3.

26. Add approximately 1 mL of the 15% sodium iodide in acetone solution to each test tube. Swirl each test tube to mix the contents. The presence of a precipitate indicates the presence of a 1° halide. Record your observations in the data table.

27. If no precipitate is observed after five minutes, place the test tubes in the hot water bath. After five minutes, remove the test tubes and cool to room temperature. Record your observations. Note: Do not boil the solutions.

28. At the end of the experiment, discard the solutions as directed by your instructor.

DATA TABLE

Part I Synthesizing 1-bromobutane

Mass of sodium bromide (g)
Volume of 1-butanol used (mL)
Mass of product (g)

Part II Analyze the Product by Gas Chromatography

Compound	Retention time (min)
1-butanol
1-bromobutane
Product

Part III Sodium Iodide Test for Alkyl Halides

Test tube	Compound	Observations (room temp)	Observations (50°C)
1	water
2	1-bromobutane
3	product

DATA ANALYSIS

1. What is the theoretical yield of 1-bromobutane in your synthesis? What is the actual yield?

2. Why is the S_N2 mechanism favored for primary substrates and less likely for a tertiary substrate?

3. What experimental evidence proves your product is 1-bromobutane?

S_N2: Synthesis of 1-Bromobutane

Figure 1 Conversion of 1-butanol into 1-bromobutane by an S_N2 mechanism

OBJECTIVES

In this experiment, you will

Synthesize 1-bromobutane via an S_N2 reaction.
Confirm the presence of a primary alkyl halide using the sodium iodide test.
Verify the product by gas chromatography.

MATERIALS

Part I Synthesis of 1-bromobutane

18 150 mm test tube	1-butanol, reagent grade
two 250 mL beakers	sodium bromide
10 mL graduated cylinder	sulfuric acid, concentrated
disposable Pasteur pipets and bulb	saturated sodium bicarbonate solution
heating mantle	saturated sodium chloride solution
ring stand and utility clamp	sodium sulfate, anhydrous
sand	DI water
boiling stone	ice
5 mL glass vial and cap

Part II Analyze by Gas Chromatography

LabQuest or computer interface	acetone
LabQuest App or Logger Pro	1-butanol, reagent grade
Vernier Mini GC	1-bromobutane
1 L glass syringe	product from Part I
Kimwipes^® or paper towel

Part III Sodium Iodide Test for Primary Alkyl Halides

three 13 100 test tubes	1-bromobutane
test tube rack	product from Part I
disposable Pasteur pipettes and bulb	15% sodium iodide in acetone solution
hotplate	Wide-Range Temperature Probe or
250 mL beaker	thermometer
DI water