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searching for Endothermic process 19 found (37 total)

Metakaolin (1,037 words) [view diff] exact match in snippet view article find links to article

than ordered. The dehydroxylation of kaolin to metakaolin is an endothermic process due to the large amount of energy required to remove the chemically

Electron affinity (1,468 words) [view diff] exact match in snippet view article find links to article

to attach an electron. In this case, the electron capture is an endothermic process and the relationship, Eea = −ΔE(attach) is still valid. Negative

Lattice energy (1,205 words) [view diff] exact match in snippet view article find links to article

the crystal into infinitely separated gaseous ions in vacuum, an endothermic process. Following this convention, the lattice energy of NaCl would be +786

Superacid (1,423 words) [view diff] exact match in snippet view article find links to article

fluoronium ion H2F+ to HF and the truly naked H+ is still a highly endothermic process (ΔG° = +113 kcal/mol), and imagining the proton in the condensed

Ammonium bicarbonate (1,299 words) [view diff] exact match in snippet view article find links to article

above about 36 °C into ammonia, carbon dioxide, and water in an endothermic process and so causes a drop in the temperature of the water: NH 4 HCO 3

Nitrogen dioxide (2,578 words) [view diff] exact match in snippet view article find links to article

150 °C (302 °F; 423 K), NO2 decomposes with release of oxygen via an endothermic process (ΔH = 14 kJ/mol): 2 NO2 →2 NO + O2 As suggested by the weakness

Gas (6,358 words) [view diff] exact match in snippet view article find links to article

(energy modes). Thermal (kinetic) energy added to a gas or liquid (an endothermic process) produces translational, rotational, and vibrational motion. In contrast

Sourav Pal (1,777 words) [view diff] exact match in snippet view article find links to article

incorporation of Sn in BEA framework reduces the cohesive energy and is an endothermic process. A computational study of hydrogen storage materials, like magnesium

Acetaldehyde (5,159 words) [view diff] exact match in snippet view article find links to article

CHO + H 2 {\displaystyle {\ce {CH3CH2OH -> CH3CHO + H2}}} In this endothermic process, ethanol vapor is passed at 260–290 °C over a copper-based catalyst

Vapor etching (1,481 words) [view diff] exact match in snippet view article find links to article

is easy to use at room temperature. The synthesis of XeF2 is an endothermic process which results in a white powder which sublimes at low pressures.

Phase-change material (3,434 words) [view diff] exact match in snippet view article find links to article

off heat. Vaporization (liquid to gas) ΔH>0; enthalpy increases (endothermic process) absorbs heat (or cools). While this process liberates a small quantity

Coffee roasting (3,680 words) [view diff] exact match in snippet view article find links to article

Drying Phase During the drying phase the beans are undergoing an endothermic process until their moisture content is evaporated, noted as the yellowing

Sulfuric acid (7,200 words) [view diff] exact match in snippet view article find links to article

onto crushed ice made from de-ionized water. The ice melts in an endothermic process while dissolving the acid. The amount of heat needed to melt the

Atom (12,392 words) [view diff] exact match in snippet view article find links to article

higher than about 26, and a mass number higher than about 60, is an endothermic process. Thus, more massive nuclei cannot undergo an energy-producing fusion

Star (16,321 words) [view diff] exact match in snippet view article find links to article

production of the stable isotope iron-56. Any further fusion would be an endothermic process that consumes energy, and so further energy can only be produced

Ammonia (14,904 words) [view diff] exact match in snippet view article find links to article

its constituent elements. Decomposition of ammonia is a slightly endothermic process requiring 23 kJ/mol (5.5 kcal/mol) of ammonia, and yields hydrogen

Corium (nuclear reactor) (5,711 words) [view diff] exact match in snippet view article

of the concrete and volatilization of its alkali components is an endothermic process. Aerosols released during this phase are primarily based on concrete-originating

Concrete degradation (7,715 words) [view diff] exact match in snippet view article find links to article

C-S-H) increases with temperature because silica dissolution is an endothermic process which requires heat to proceed. When water flows through cracks present

Calcium looping (5,957 words) [view diff] exact match in snippet view article find links to article

gases and solids attached (such as cyclones). Calcination is an endothermic process and as such requires the application of heat to the calciner. The