Senin, 04 Mei 2009

Laut Sumber Emas...

Water has great abundance on the Earth, and of that abundance about 97% is sea water, Tuhan telah menganugrahkan buanyak hal kepada manusia melalui air laut.Betapa kayanya dunia dengan adanya laut. Selain sumber ikan, air laut dapat pula diekstrak membentuk garam selain itu kandungan mineral yang terkandung dalam air laut sangat besar salah satunya adalah emas. Sehingga memungkinkan laut sebagai sumber emas....
Here is the chemical composition of seawater..Log on this website..

Kamis, 30 April 2009

Colors

Hidup penuh warna.....
Bagaimana warna-warna itu dapat kita lihat?
Our eyes are sensitive to light which lies in a very small region of the electromagnetic spectrum labeled "visible light". This "visible light" corresponds to a wavelength range of 400 - 700 nanometers (nm) and a color range of violet through red. The human eye is not capable of "seeing" radiation with wavelengths outside the visible spectrum. The visible colors from shortest to longest wavelength are: violet, blue, green, yellow, orange, and red. Ultraviolet radiation has a shorter wavelength than the visible violet light. Infrared radiation has a longer wavelength than visible red light. The white light is a mixture of the colors of the visible spectrum. Black is a total absence of light.

Rabu, 29 April 2009

Chemistry In Our Daily Life

Have u ever eat Ice Cream?
Ofcourse u did ,Right?
Para penjual es puter biasanya menaburkan garam dapur pada es batu disekeliling wadah es puternya? Mengapa demikian?
Salt is used to make homemade ice cream. Salt also used on sidewalks and roads, used to melt the ice and snow and keep it from refreezing.In both cases, the salt works by lowering the melting or freezing point of water. The effect is termed 'freezing point depression'.
Penambahan garam justru akan membuat es meleleh, es yang ditambah garam akan memiliki titik beku yang lebih rendah daripada air murni. Sehingga membutuhkan panas yang lebih untuk meleleh. When salt is put on ice, it dissolves on the ice's watery surface. In the process, heat is absorbed. The salt also causes the ice to melt quickly—another process that absorbs heat from the surroundings.So, es krim yang berada disekitar es yang ditaburi garam tersebut dapat membeku.

Jumat, 17 April 2009

Eat Metals to Keep Our body Healthy

Do you know that metals is very important to our body? Now ,paling tidak telah diakui 14 elemen renik yang berperan esensial bagi kehidupan hewan dan manusia (Cotzias GC, Miller ST dkk, 1976), yaitu besi, iodium, tembaga, seng, mangan, kobalt, molibdenum, selenium, kromium, nikel, timah, silikon, dan vanadium.
Those element are needed to metabolism process in our body....
To be continued....

Eat Metals to Keep Our body Healthy

Do you know that metals is very important to our body? Now ,paling tidak telah diakui 14 elemen renik yang berperan esensial bagi kehidupan hewan dan manusia (Cotzias GC, Miller ST dkk, 1976), yaitu besi, iodium, tembaga, seng, mangan, kobalt, molibdenum, selenium, kromium, nikel, timah, silikon, dan vanadium.
Those element are needed to metabolism process in our body....
To be continued....

Rabu, 18 Maret 2009

"Green Tea, Powerful anti-oxydant"

Do you like to drink tea?
There are several health benefits linked to the consumption of green tea, and in the last few decades several studies have been conducted to see just how widespread these benefits are. Green Tea is believed to help maintain weight, promote weight loss, decrease the risk of various cancers and prevent heart disease.
Several studies have been conducted all over the world regarding the health benefits of regular green tea consumption. Many of the studies are still underway, and include theories that green tea will help stop neurodegenerative diseases, prevent cancer, and treat multiple sclerosis. Although many of the theories have yet to be proved; many swear that regular drinking of green tea will produce long-term health benefits.



Jumat, 27 Februari 2009

Molecular Orbital Energy Levels Diagram

HCl is a simple heteronuclear diatomic molecule. The valence ao’s for this molecule are simply the H 1s and the 3s, 3px, 3py, 3pz ao’s of chlorine.
This following are the molecular orbital energy levels diagram of hydrogen chloride....


HCl has four pairs of valence electrons, yields the electronic configuration
(3s)2 (σ3px)2 (π3py)2 (π3pz)2 (σ3p*)
And shows three lone pairs (the 3s and pπn pairs) and one bond pair (from pσ)

I have been looking for the KF molecular orbital energy levels diagram, but I found HF ones. Here it is.........




I still lack of knowledge about MOT
I have’nt understood
Would you mind to give me an explanation....
Thankyou so much...
Cu in the next project for KF diagram
I'll do it as soon as possible....