A double bond is represented by two parallel lines. For example, the structural formula for CO2 is O=C=O.
Sucrose is a disaccharide comprised of glucose and fructose. While both glucose and fructose have double bonds, sucrose does not.
Each glucose molecule has the chemical formula C6H12O6. When three glucose molecules bond, they lose two molecules of water. The chemical formula of a trisaccharide made of three bonded glucose molecules is C18H32O16.
The general formula of disaccharides is C12H22O11, representing two monosaccharide units joined together through a glycosidic bond. Examples of disaccharides include sucrose (glucose + fructose), lactose (glucose + galactose), and maltose (glucose + glucose).
The general formula for a trans isomer is (E)-X-Y, where X and Y represent different groups attached to the double bond in a non-cyclic structure. The "E" notation indicates that the substituents are on opposite sides of the double bond.
If you're talking about formula like chemical formula (NaCl), there isn't one exactly, though sometimes a line is used (single line for a single bond, double line for a double bond, triple line for a triple bond). If you mean like a mathematical formula (LCAO or something similar), then Levine's Quantum Chemistry has a much more thorough treatment than we could possibly give here.
Sucrose is a disaccharide comprised of glucose and fructose. While both glucose and fructose have double bonds, sucrose does not.
Each glucose molecule has the chemical formula C6H12O6. When three glucose molecules bond, they lose two molecules of water. The chemical formula of a trisaccharide made of three bonded glucose molecules is C18H32O16.
To draw the structural formula for lactose, start with a glucose molecule. Attach a galactose molecule to the glucose molecule through a beta-1,4 glycosidic bond. This forms the disaccharide lactose.
The general formula of disaccharides is C12H22O11, representing two monosaccharide units joined together through a glycosidic bond. Examples of disaccharides include sucrose (glucose + fructose), lactose (glucose + galactose), and maltose (glucose + glucose).
The general formula for a trans isomer is (E)-X-Y, where X and Y represent different groups attached to the double bond in a non-cyclic structure. The "E" notation indicates that the substituents are on opposite sides of the double bond.
Ethylene has 4 single bonds (carbon to hydrogen) and 1 double bond (carbon to carbon).
HCl, NH3, PH3, HF, CS, H2CO, H2O have Lewis formulas that do not incorporate a double bond. CS2 has a Lewis formula with a double bond between the C and S atoms.
The glycosidic bond between the two glucose molecules in maltose is broken during the conversion to glucose. This bond is hydrolyzed by the enzyme maltase, which catalyzes the reaction.
If you're talking about formula like chemical formula (NaCl), there isn't one exactly, though sometimes a line is used (single line for a single bond, double line for a double bond, triple line for a triple bond). If you mean like a mathematical formula (LCAO or something similar), then Levine's Quantum Chemistry has a much more thorough treatment than we could possibly give here.
The bond indicated by the sign "=" in the formula, which in this instance is not an "equals" sign, is a double covalent bond between the two oxygen atoms.
The hydrocarbon series that contains a double covalent bond between carbon atoms is the alkene series. Alkenes have the general formula CnH2n and are characterized by the presence of at least one double bond between carbon atoms in the molecule.
A covalent bond that shares four electrons has a double bond between the atoms. A single bond is shown as a single dash, so a double bond is two dashes.