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Why do heptan-1-ol molecules and water molecules not mix?
Heptan-1-ol molecules and water molecules do not mix well because heptan-1-ol is a nonpolar molecule, while water is a polar molecule. Nonpolar molecules are not attracted to polar molecules, so they do not easily mix. Additionally, heptan-1-ol is hydrophobic, meaning it repels water, further preventing the two substances from mixing. This is due to the difference in the polarity and intermolecular forces between the two substances.
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Why are water molecules permanent dipoles and carbon dioxide molecules not?
Water molecules are permanent dipoles because they have a bent molecular shape with unequal sharing of electrons between the oxygen and hydrogen atoms. This results in a partial negative charge on the oxygen atom and partial positive charges on the hydrogen atoms, creating a permanent dipole moment. On the other hand, carbon dioxide molecules are not permanent dipoles because they have a linear molecular shape with symmetrical distribution of the two oxygen atoms and the carbon atom. This results in equal sharing of electrons and no permanent dipole moment.
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Why are there H2 molecules, but no H3 molecules and no individual H atoms in nature?
H2 molecules exist in nature because hydrogen atoms are more stable when they share electrons and form a covalent bond, creating a more energetically favorable state. H3 molecules do not exist because the formation of three hydrogen atoms sharing electrons is not energetically favorable due to the repulsion between the positively charged nuclei. Additionally, individual hydrogen atoms are highly reactive and tend to quickly form bonds with other atoms to achieve a more stable electron configuration.
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How many molecules are in water?
A water molecule consists of two hydrogen atoms and one oxygen atom. Therefore, one molecule of water contains three atoms. In a mole of water, there are 6.022 x 10^23 molecules, which is known as Avogadro's number. This is a fundamental concept in chemistry and is used to calculate the number of molecules in a given amount of substance.
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How many water molecules are present in water?
A water molecule consists of two hydrogen atoms bonded to one oxygen atom. Therefore, a single water molecule contains three atoms in total.
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How many water molecules are contained in water?
A single water molecule is composed of two hydrogen atoms and one oxygen atom, bonded together. Therefore, a single water molecule contains three atoms in total. Each water molecule also contains two hydrogen-oxygen bonds. So, in a single water molecule, there are two hydrogen atoms, one oxygen atom, and two hydrogen-oxygen bonds.
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'Salts or molecules?'
Salts are compounds formed from the reaction of an acid and a base, while molecules are made up of atoms bonded together. Salts are ionic compounds, meaning they are made up of ions, while molecules can be either ionic or covalent compounds. Salts have a specific crystalline structure and are often soluble in water, while molecules can have a wide range of physical properties and solubilities. Overall, salts and molecules are distinct types of chemical compounds with different structures and properties.
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In polycondensation, how many water molecules are eliminated?
In polycondensation, one water molecule is eliminated for each monomer unit that is added to the polymer chain. This process occurs as the monomer units react with each other to form longer polymer chains, and a water molecule is released as a byproduct of the reaction. The elimination of water molecules is a key characteristic of polycondensation reactions, and it allows for the formation of larger polymer chains from smaller monomer units.
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