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:


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

Previous post Universe
Next post Dance – Culture and society – Art
Finance management Business development Business strategy Business operations Business management Business growth Business analysis Industry trends Financial analysis Industry insights Industry challenges Manufacturing process Manufacturing industry Manufacturing technologies Parenting Family Journalism Lifestyle blog Current events Breaking news Media coverage Educational trends Scientific community STEM (Science, Technology, Engineering, and Mathematics) Legal support team Legal regulations compliance Intellectual property laws Career success Education software Online learning platforms Civil rights protection Corporate legal compliance Legal guidance blog Cybersecurity Social media marketing Digital transformation Network infrastructure Internet of Things (IoT) Web development Software maintenance Software engineering Mobile apps E-commerce platforms User experience (UX) design User interface (UI) design Responsive web design Artificial intelligence (AI) Car accessories Automotive engineering Car maintenance Adventure travel Car technology Vehicle Automotive trends Automotive industry analysis Car brands Healthy lifestyle Nutrition and wellness Dermatology services Cosmetic procedures Plastic surgery Alternative medicine Fitness exercises Mental health Yoga and meditation Oral health Fashion Women's fashion Skincare routine Wedding flowers Fashion accessories Online fashion community Online shopping Fashion tips Pet Health Services Veterinary Care Shelter and Rescue Home renovation ideas Interior design inspiration Home decor trends mart home technology Real estate market trends Rental property management Gardening and landscaping tips Home remodeling and renovations Moving and packing services Professional home cleaning furniture and accessories Art and design workshops Art and culture events Art festivals and fairs Visual arts and crafts Outdoor adventures Sports events sports Gaming community Outdoor family activities Gastronomy Food tourism Food exploration Vacation Holiday Tourist Attractions Travel destinations Leisure activities Weekend getaway Travel experiences News reporting Residential services Big Data Real estate agent selection Parenting Guides Pool maintenance and cleaning Fashion industry news health shop Data analytics Community Press release zoom news info Parenting Tips & Advice Legal representation Health and wellness tips data macau travel Medical treatmentsschool trips plus uk Legal assistanceParenting Tips puppy love pets uk Automotive manufacturing Exterior home improvement Travel tips Headlines Food culture Automotive industryAutomotive industry Healthcare servicesAutomotive industry tekno gue