8 Silicon is an element in Group IV of the Periodic Table.(a) One of the isotopes of silicon is:Si Deduce the number of electrons, neutrons and protons in one atom of this isotope of silicon.14number of electrons16number of neutrons...14number of protons...3](b)Silicon reacts ...
Plants accumulate silicon in their tissues as amorphous silica. The form of silicon taken up by plants is silicic acid, a neutral molecule that passes through membrane channels with water. After seminal work on rice identified an aquaporin that appeared to mediate the passage of silicic acid, ...
A room temperature curable organopolysiloxane composition is provided. It includes (A): a diorganopolysiloxane containing 2 hydroxyl groups or hydrolysable groups bonded to silicon atoms within each molecule; (B): (B1) an amine compound of the general fo
(ii) State a use for kerosene and a use for bitumen.(2)kerosene bitumen(b) A molecule of the hydrocarbon eicosane has the formul a C20H42(i) Explain which homologous series eicosane belongs to.2)(ii)Name a catalyst used in the industrial cracking of eicosane.(1)(iii) In a ...
As silicon chip and superconductor development has scaled over the years, it is distinctly possible that we might soon reach a material limit on the computing power of classical computers. Quantum computing could provide a path forward for certain important problems. ...
Quantum computing is a rapidly-emerging technology that harnesses the laws of quantum mechanics to solve problems too complex for classical computers.
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What is a polar covalent molecule? What bond occurs between two nonmetals? How does electronegativity differ from electron gain enthalpy? Determine the bond angle for SiO_2. What is the chemical formula for silicon dioxide? How many valence electrons are in a neutral atom of silicon?
If a molecule A yields a fluorescent excited state A* that is partially quenched by an added material Q, then a simple kinetic analysis of the quenching data will reveal the second-order quenching constant as follows. Consider the reaction scheme: (29)RateA→hvA*Ia (30)A*→kFA+hυFkF[A...
Using the technique of neutralization-reionization mass spectrometry (NRMS) it could be shown that the elusive phosphorotrithious acid (HS)3P is a stable molecule in the rarefied gas phase. A triple propene elimination from the molecular ions of the dipropyl ester of propylphosphonotrithioic ...