Carboxyl group
3 oxygen atoms, so one and a half oxygen molecules. 3 Oxygen atoms joined by a single and a double bond in a bent shape, it is one molecule. A normal molecule of Oxygen has two atoms joined by a double bond.
In ethene, two hydrogen atoms are attached to each of the two carbon atoms. The carbon atoms are joined by a double bond. This results in a linear arrangement with the hydrogens positioned on opposite sides of the molecule.
The molecular formula of acetylene gas is C2H2. The shape of the molecule is linear, with the two carbon atoms joined by a triple bond and each carbon atom also bonded to one hydrogen atom by a single bond.
The numbers in a glycosidic linkage represent the carbon atoms involved in the bond formation. For example, in an alpha 1-6 linkage, carbon atom 1 of one sugar molecule is connected to carbon atom 6 of another sugar molecule.
There are no such things as "an atom molecules". Molecules are made of two or more atoms for instance: an Oxygen molecule is made of two atoms of Oxygen that are joined together. a Methane molecule is made from 4 atoms of hydrogen and one atom of Carbon that are joined together.
amino acids
Diatomic oxygen is a diatomic molecule joined by a double covalent bond.
An atom is the smallest complete particle of an element. A molecule consists of two or more atoms joined together.
In an alkene with two carbon atoms being joined, there would be one double bond between the carbon atoms, and 4 single bonds for the 4 hydrogens, and it would be drawn as follows: H2-C=C-H2. This is ethene, and so it has a total of 5 bonds (unless you count the double bond as a sigma and a pi) then it has 6 bonds.
double sugars. glucose is a monomer.
Organic
3 oxygen atoms, so one and a half oxygen molecules. 3 Oxygen atoms joined by a single and a double bond in a bent shape, it is one molecule. A normal molecule of Oxygen has two atoms joined by a double bond.
A compound containing a carbon-carbon double bond is called an alkene. Alkenes are a type of unsaturated hydrocarbon where two carbon atoms are joined by a double bond. Examples include ethene (ethylene) and propene (propylene).
Carbon has 4 available bonds. Oxygen has 2. All bonds must be used up or the compound will not be stable. Each oxygen is joined to the carbon by a double covalent bond. CO2 has 2 double-covalent bonds (4 covalent bonds in total)
No carbon-carbon (C=C) double bonds. All carbons are joined to four other atoms: either carbon or hydrogen.
This category includes all of the following, and there may be other: O2, CO, and NO.
A disaccharide (e.g. sucrose; or ordinary, off-the-shelf table sugar) is a carbohydrate molecule that consists of two monosaccharides (single carbohydrate monomers) joined together by a glycosidic bond.