the molar heat of formation (also called standard enthalpy of formation) of a compound (Δh f) is equal to its enthalpy change (Δh) when one mole of compound is formed at 25°c and 1 atm from elements in their stable form. you need to know the heat of formation values to calculate enthalpy and for other thermochemistry problems. this is a table of the heats of formation for a variety of
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The Chemical Reaction That Causes Rust - thoughtco.com
rust is the common name for iron oxide. the most familiar form of rust is the reddish coating that forms flakes on iron and steel (fe 2 o 3), but rust also comes in other colors, including yellow, brown, orange, and even green!the different colors reflect various chemical compositions of rust.
in plant cells, cytokinesis begins when vesicles containing cell wall material collect in the middle of the cell. the vesicle fuse forming a large sac call the cell plate. the cell plate grows outwards until its membrane fuses with the plasma membrane, separating the two daughter cells. the cell plate's contents join the parental cell wall. the result is two daughter cells, each bounded by its
my chemical romance (commonly abbreviated mcr or shortened to my chem) was an american rock band from newark, new jersey, active from 2001 to 2013. the band's best-known lineup consisted of lead vocalist gerard way , guitarists ray toro and frank iero , bassist mikey way and drummer bob bryar , accompanied by keyboardist james dewees .