Class Notes (867,167)
CA (523,475)
UNB (334)
CHEM (47)
CHEM1006 (24)
Lecture 6

CHEM1006 Lecture 6: Chem2_6

1 Page

Course Code
Reeves Valerie

This preview shows half of the first page. Sign up to view the full page of the document.

Loved by over 2.2 million students

Over 90% improved by at least one letter grade. are saying about us

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Lecture 6 History of the Law of Definite Composition or Proportions. French chemist Joseph Proust proposed the law of definite composition or proportions based on his experiments conducted between 1798 and 1804 on the elemental composition of water and copper carbonate. In 1806, Proust summarized his observations in what is now called Proust's Law. It stated that chemical compounds are formed of constant and defined ratios of elements, as determined by mass. Carbon dioxide is composed of one carbon atom and two oxygen atoms. By mass, carbon dioxide can be described by the fixed ratio of 12:32, or simplified as 3:8. At the time, Proust's theory was a controversial one and disputed by a number of chemists, most notably another French chemist, Claude Louis Berthollet. Berthollet supported the concept that elements could mix in any ratio. The English chemist John Dalton's formulation of atomi
More Less
Unlock Document
Subscribers Only

Only half of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
Subscribers Only
You're Reading a Preview

Unlock to view full version

Unlock Document
Subscribers Only

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.