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Sagot :
Hence 3.011*10²³ molecules are present in 1 liter of solution .
Molecular weight of compound = 200 grams
molecular weight of compound is weight of 1 M concentration of compound .
1M conc of compound has = 200 grams
molecular weight .
0.5 conc of compound has molecular weight = 200gram/2 = 100 gram
Hence 0.5 conc of compound means 100 gram of compound
As it is an aquous solution , thus means in order to make 1 liter 100gm of compound has to be added to 1000 ml of water to make 1 liter.
This means 100 gram of compound and add water until volume is 1 liter
In order to calculate number of molecules
No of molecules = Number of moles * avogardo constant
Avogardo constent = 6.022*10²³
as concentration of solution is 0.5 M
No of molecles = 0.5*6.022*10²³
= 3.011*10²³
Hence 3.011*10²³ molecules are present in 1 liter of solution .
A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds. Depending on the context, the term may or may not include ions that meet this criterion.[4][5][6][7][8] In quantum physics, organic chemistry and biochemistry, ions The distinction between is removed and molecule is often used when referring to polyatomic ions.
Molecules can be isonuclear. H. Consists of atoms of chemical elements. Two atoms in the oxygen molecule (O2). Or it may be heteronuclear, which is a compound composed of multiple elements. Water (2 hydrogen atoms and 1 oxygen atom; H2O). In gas dynamics theory, the term molecule is often used for gas particles, regardless of their composition. This relaxes the requirement that molecules contain more than one atom, since noble gases are single atoms . Atoms and complexes held together by non-covalent interactions, such as hydrogen bonds and ionic bonds, are generally not considered single molecules.
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