Search results
Results from the WOW.Com Content Network
Orthoformic acid or methanetriol is a chemical compound with the formula H C(OH) 3. In this molecule, the central carbon atom is bound to one hydrogen and three hydroxyl groups. Orthoformic acid was long held to be a hypothetical chemical compound , as it was expected to decompose instantly into formic acid and water, making it too unstable to ...
L 2 M T −3: scalar Reaction rate: r: Rate of a chemical reaction for unit time mol/(m 3 ⋅s) L −3 T −1 N: intensive, scalar Refractive index: n: Factor by which the phase velocity of light is reduced in a medium unitless 1: intensive, scalar Reluctance: resistance to the flow of magnetic flux H −1: L −2 M −1 T 2 I 2: scalar Solid ...
[3] Because Newton generally referred to mass times velocity as the "motion" of a particle, the phrase "change of motion" refers to the mass times acceleration of the particle, and so this law is usually written as =, where F is understood to be the only external force acting on the particle, m is the mass of the particle, and a is its ...
Skeletal structural formula of Vitamin B 12.Many organic molecules are too complicated to be specified by a molecular formula.. The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are possibly arranged in the real three-dimensional space.
Once the global stiffness matrix, displacement vector, and force vector have been constructed, the system can be expressed as a single matrix equation. For each degree of freedom in the structure, either the displacement or the force is known.
The inner product of a 4-vector with itself is equal to a scalar (by definition of the inner product), and since the 4-vectors are physical quantities their magnitudes correspond to physical quantities also.
In order to study gas phase interstellar chemistry, it is convenient to distinguish two types of interstellar clouds: diffuse clouds, with T=30-100 K, and n=10–1000 cm −3, and dense clouds with T=10-30K and density n= 10 4-10 3 cm −3. Ion chemical routes in both dense and diffuse clouds have been established for some works (Hartquist 1990).
Orthocarbonic acid is highly unstable. Calculations show that it decomposes into carbonic acid and water: [2] [3] H 4 CO 4 → H 2 CO 3 + H 2 O. Orthocarbonic acid is one of the group of ortho acids that have the general structure of RC(OH) 3. The term ortho acid is also used to refer to the most hydroxylated acid in a set of oxoacids.