#atomic weight

[lindahall]

Theodore Richards – Scientist of the Day

Theodore William Richards, an American chemist, was born Jan. 31, 1868.

read more...

[lindahall]

Stanislao Cannizzaro – Scientist of the Day

Stanislao Cannizzaro, an Italian chemist, was born July 13, 1826.

read more...

[mathproblemz]

What is required to neutralize 4 grams of NaOH❓👀 #math #stoichiometry

[mathproblemz]

What will 1 standard gram-mole of As₂O₃ with carbon form ❓ #maths #stoichiometry

[theenglishnook]

Born September 6, 1766, John Dalton reshaped science and English itself. From atomic weight to Daltonism, his terms gave structure to chemistry and remain vital in the language of science and culture today.

Birth of John Dalton – Atomic Theory and the Evolution of Scientific English

[mission-to-dietitian]

[mrsfanky]

Many of us grew up being taught that the standard atomic weights we found in the back of our chemistry textbooks or on the Periodic Table of the Chemical Elements hanging on the wall of our chemistry classroom are constants of nature. This was common knowledge for more than a century and a half, but not anymore. The following text explains how advances in chemical instrumentation and isotopic analysis has changed the way we view atomic weights and why they are no longer constants of nature.

Wow, I’ve been labouring under a misapprehension my whole teaching life. But of course, isotope abundances will change with location - otherwise carbon dating wouldn’t work, right?

[your-jose-felix]

2019 year of the periodic table

2019 year of the periodic table

Dimitriv Ivanovich Mendeliév a Russian who 150 years ago presented a periodic table to gather all the elements including those that were to be discovered.

  The United Nations has declared 2019 as the International Year of the Periodic Table of Chemical Elements (IYPT2019).In the mid-nineteenth century 69 elements were known but they were not organized. In 1860, if he fixed the concept of…

View On WordPress