Order
Toll-free 24/7:
+1 725-224-8795
Order

Environmental Chemistry Assignment | Professional Essay Writers

Author:
February 20th, 2020

1. How long will it take for 15% of the U−238 atoms in a sample of U−238 to decay?

Save Time On Research and Writing
Hire a Pro to Write You a 100% Plagiarism-Free Paper.
Get My Paper

Custom Assignment Help

Express your answer using two significant figures.

2. If a sample of U−238 initially contained 1.7×1018 atoms when the universe was formed 13.8 billion years ago, how many U−238 atoms will it contain today?

Custom Assignment Help

Save Time On Research and Writing
Hire a Pro to Write You a 100% Plagiarism-Free Paper.
Get My Paper

Express your answer using two significant figures. Get Chemistry help Today

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Homework Writing Services
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Computer science
Excellent.
Customer 462387, April 4th, 2022
English 101
Excellent.
Customer 458101, April 23rd, 2022
Ethics
Good Job!
Customer 454777, July 8th, 2020
Psychology
Good job.
Customer 453707, May 8th, 2022
Other
Good job.
Customer 459155, May 31st, 2022
Business
Thank you for following all instructions. Good piece
Customer 463337, March 1st, 2023
Military
Good job
Customer 456821, January 11th, 2023
Military
GOOD WORK.
Customer 456821, June 11th, 2022
Human Resources Management (HRM)
GREAT Effort.
Customer 463035, July 8th, 2022
Other
The PowerPoint Presentation is PHENOMENAL! The writer went above and beyond my expectations! Thank you so much.
Customer 452455, February 15th, 2023
SEO
Well-written and well-researched content. Followed the instructions to the letter. Good job mate!!
Customer 463679, April 27th, 2023
Psychology
The writer followed all instructions and superseded my expectations!!! This paper was beautifully written and I am thoroughly impressed!! Thank you to the writer for doing a phenomenal job and thank you to customer service for ensuring I received a quality paper.
Customer 452455, May 5th, 2023
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend
OUR GIFT TO YOU
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat
Show more