I'm often enchanted by stories of great innovations that failed to find an application when they were first invented. While writing this article, for example, I was repeatedly reminded of the laser, which was once called a solution looking for a problem. Oh, what a difference a few decades...
The orbiter consists of the following parts: crew compartment - where you will live and work forward fuselage (upper, lower parts) - contains support equipment (fuel cells, gas tanks) for crew compartment forward reaction control system (RCS) module - contains forward rocket jets for turning the...
Specific Heat Capacity (c here) of a substance is the heat required (q) to raise the temperature of 1 unit mass of that substance by 1 unit {eq}c = \dfrac{q}{m\Delta T} {/eq} Where {eq}\Delta T{/eq} is the change in temperature ...
Is the molar enthalpy of formation a type of enthalpy change? Or, is it just how much energy is absorbed as heat when one mole of a compound is formed? delta H is +269.0 kJ for the reaction 2Ba(s) + O2(g) = 2BaO(s) deltaH = -1107.0 kJ Ba(s) + CO2(g) + O2(g) = BaC...
Cut a small hole for a stirring rod through the lid to one side of the thermometer. Insert the stirring rod and verify it fits snugly, but has enough range of motion to stir. To keep the chemical reaction going, it might be necessary to stir the combination in the coffee cup. ...
(or phosphorus trihydride), a colorless gas with a rotting fish odor. Phosphine is a highly reactive molecule that ignites spontaneously in air. Determine deltaH for the combustion of phosphine. The reaction forms tetraphosphorus decaoxide (solid) and water (gas). The enthalpy of formation for ...
Back in the 1990s, Philip Strong was able not only to describe the psychological impact of epidemics on social order but also to model it. He observed that the early reaction to major fatal epidemics is a distinctive psycho-social form and can be modeled along three main dimensions: fear, ...
the time of fast individual atomic motions (e.g., vibrations), (ii) the characteristic time of the reaction at hand, with the ensuing bond rearrangement, (iii) the equilibration time (in principle infinite, in practice long but finite) the system takes to go from the initial condition, e...
Flapping wings produce lift and thrust in bio-inspired aerial robots, leading to quiet, safe and efficient flight. However, to extend their application scope, these robots must perch and land, a feat widely demonstrated by birds. Despite recent progress,
ACROSOME REACTIONMARIJUANADELTA-9-TETRAHYDROCANNABINOLCP-55,940CANNABINOID RECEPTORMODULATE RESPONSE TO STIMULATIONThe Wadden Sea is important as a stop-over and wintering area for several species of waders, foraging for shorter or longer times on its tidal flats. The size of the food stocks these ...