Avogadro constant challenge

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Avogadro constant challenge.

We would like to invite you to participate in the Analytical Challenge, a series of puzzles to entertain and challenge our readers. This special ABC feature has established itself as a truly unique quiz series, with a new scientific puzzle published every other month. Readers can access the complete collection of published problems with their solutions on the Analytical and Bioanalytical Chemis...

متن کامل

Solution to the Avogadro constant challenge.

The Avogadro constant has long been defined as the number of molecules of a substance in a gram molecular weight [1]. In a modern parlance, it is a fundamental physical constant representing the number of entities comprising 1 mol. It is clear that any modification to the definition of macroscopic (kilogram) or microscopic mass scales (atomic mass) will affect the numerical value of the Avogadr...

متن کامل

Avogadro and his Constant

Avogadro’s constant is the number of molecules in a mole, or the ratio of the molar mass to the molecular mass. Its great importance is that it provides a link between the properties of individual atoms or molecules and the properties of bulk matter. For example, it links the energies of individual atoms and molecules, which can be determined from spectroscopy, to the thermodynamic energies of ...

متن کامل

Avogadro Constant Determination for a Redefined Kilogram

Today the mass unit kilogram is still defined by the mass of an artefact, the international prototype of the kilogram. The Avogadro constant can be used to define the kilogram in terms of a fundamental constant. The International Avogadro Coordination determined the Avogadro constant in a new approach by ‘counting’ the atoms in 1 kg single-crystal spheres, which are highly enriched with the Si ...

متن کامل

CBOT: our constant challenge

CBOT: o nosso desafio constante Recently, we had another Brazilian Congress of Orthopedics and Traumatology (CBOT), this time in the city of Rio de Janeiro, with its beauty and joyfulness and the warmhearted competence of its inhabitants. Rio has a great tradition of congresses, starting with the one at the Quitandinha, the first major Brazilian congress, and continuing to today's international...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Analytical and Bioanalytical Chemistry

سال: 2010

ISSN: 1618-2642,1618-2650

DOI: 10.1007/s00216-010-3558-2