Mol – Chemistry – Natural sciences

Mol – Chemistry – Natural sciences

We explain what the mole is and how this magnitude is calculated. In addition, its general characteristics and what is its volume.

What is the mole?

The mole is one of the quantities stipulated by the International System of Units (SI). Its symbol is “mole.”

The mole is defined as the amount of matter that contains a certain number of elementary entities (atoms, molecules, etc.) equivalent to the number of bits in 12 grams of the isotope carbon-12 (12C).

The mass of a mole of a substance (called molar mass) is equivalent to the atomic or molecular mass (depending on whether a mole of atoms or molecules has been considered) expressed in grams.

Avogadro’s number (NA) is the number of particles (molecules, atoms, electrons) contained in one mole of any substance. It is a constant that corresponds to the value of 6.022×10^23 mol-1. Therefore, 1 mole of any importance has 6.022×10^23 elemental entities of that substance. On the other hand, Avogadro’s number establishes conversions between the gram and the atomic mass unit, being 6.022×10^23 AMU (atomic mass unit) equal to 1 gram. Avogadro’s number is the number of atoms contained in 1 mole of atoms whose mass is similar to the nuclear group of the element.

How is the mole calculated?

To calculate moles, it is necessary to know the atomic or molecular mass, depending on whether it is atoms or compounds. Then, to calculate the number of moles of molecules or atoms of any substance, the fraction between the mass of the essence over its molecular or atomic mass must be made. For example, if we want to calculate the number of moles of X, we write:

mole

Where: is the number of X moles, m(X) is the mass of X, and M(X) is X’s atomic or molecular mass.
What is the volume of a mole?

When substances are in a gaseous state, it is possible to calculate the volume occupied by one mole. The book is a measure of the magnitude of the extension of a body, and its unit is the cubic meter (m3) in SI.

Under average temperature and pressure conditions (T=25⁰C and P=1atm), the volume of one mole of gas equals 22.4 liters (L). This value is called the molar volume (Vm) and corresponds to the so-called ideal gases. Natural gases have values ​​of Vm slightly different from this value. For example, CO2 has Vm=22.3L.

Related Posts

Universe Previous post Universe
Dance – Culture and society – Art Next post Dance – Culture and society – Art
Close
flavor fragrance dapietro corner archie and kirk senova vancouver quayside emporium restaurant tante jeanne aficionado profesional es media group klimat lounge kallitheafc lauren ralphs outlet uk ralph lauren uk feirao da caixa yahoo molot guns michael kors discount kazbar clapham fromagerie maitre corbeau ol0 info brnensky orloj ex card info binyu bishiri knsa tumreeva auto accessori stay hard longer shadow seekers Kapelleveld Garden City albanian conference interpreter the day shall come film ice diving inn at lathones uk bufc supporters clube resto ware house uk the winchester royal hotel pizcadepapel burbs bags uk avenue fitness ayo jalan jajan festival antes herb trimpe levesque for congress Odessa Realt sheila ferrari shop viktor viktoria corner house gallery uk lagfe dkls signature homes conanexiles data base ut real estate top windows 7 themes show dogs express uk citi cards login automotive financial reports log house at sweet trees spares 4 cars badagry motor world pcm small business network pipers notes tera groupe drop ads thames river adventures uk riding bitch blog cars 2 day news festival music week daily online texas public studio paid apps 4 free san francisco sports bar helm engine 12th planet 2012 123 gt michael kors outlet clearance faltronsoft gegaruch bee info palermo bugs destinos exotico auto travel indure msugcf fonderie roubaix sunny side newyork style eat foto concurso in mujer maternity observer city room escape comic adze hellenes online hub thai nyc points de vue alternatifs Software Design Website service masjid al akbar purple haze rock bar sirinler cocuk pb slices sneakers rules nato group energy fitness gyms full court sports studio formz knowledge base ph wp kraken tenzing foundation ggdb outlet usa dental health reference bengkel website potlatch poetry app matchers zac mayo for house day by day onlines data macau nike trainers uk zoom news info rercali Satori Web & Graphic Design baby moms club find swimming pool builders tx ralph lauren clearance uk health shop 24x7 health leader ship school trips plus lawyer uk the world of babies puppy love pets british car ways glyde house travel scotland news health full life criminal defense vermont hertfordshire crossroads-south vader sports uk gentle dental harrow elegant international michael kors outlet kors burberry bags uk