جميع المواضيع المتعلقة بـ ‘mole’

 

Atoms

ATOMS

Law of constant composition: This states that “A chemical compound (if pure) always contains the same elements combined together in the same proportion by mass regardless of bow the compound is prepared or from where it is obtained”.

Law of conservation of mass: This is defined as “In every chemical reaction, the total mass of the products is the…

كلمات دليلية: , , , , , , , , , , , , , , , , ,

ملخص الفصل الثالث :العلاقات الكمية الكيميائية من كتاب الكيمياء للعالم زومدال Chapter 3 notes: Stoichiometry , AP chemistry Zumdahl

ملخص الفصل الثالث :العلاقات الكمية الكيميائية من كتاب الكيمياء للعالم زومدال Chapter 2 notes: Stoichiometry , AP chemistry Zumdahl

الكيمياء العامة 1 ، الكيمياء العامة 101 ، General Chemistry

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ملخص الفصل الأول :أساسيات الكيمياء للعالم زومدال Chapter 1 chemistry foundation Notes Zumdahl AP

ملخص الفصل الأول أساسيات الكيمياء للعالم زومدال Chapter 1 chemistry foundation Notes Zumdahl

الكيمياء العامة 1 ، الكيمياء العامة 101 ، General Chemistry

 

لتنزيل كل شريحة على حدة يرجى الضغط

كلمات دليلية: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Mole and chemical formulas

Because the individual atoms in a compound are combined in integer ratios, and each element has a specific atomic mass, it is possible to use mole calculations to determine chemical formulas. The two types of chemical formulas are molecular formulas and the empirical formulas.

– Often, the empirical formula is the same as the molecular formula.

The molecular formula shows the actual number of atoms in a substance….

كلمات دليلية: , , , ,

The Mole Concept

The concept of mole is extremely useful in chemistry. The mole is a term like dozen. Dozen means 12. The mole means 6.02 x 1023. It is convenient for chemists to use a concept like mole which represents such a large number since they deal in very small and very numerous quantities. The mole is also called Avogadro’s number.

Avogadro’s number: It is the number of molecules present…

كلمات دليلية: , ,