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Saturated phosphatidylcholine lipids with tails longer than 14 carbons are solid at room temperature, while those with fewer than 14 are liquid. This phenomenon is analogous to the fact that paraffin wax , which is composed of long alkanes, is solid at room temperature, while octane ( gasoline ), a short alkane, is liquid.
A compressed fluid (also called a compressed or unsaturated liquid, [1] subcooled fluid or liquid) is a fluid under mechanical or thermodynamic conditions that force it to be a liquid. [2] At a given pressure, a fluid is a compressed fluid if it is at a temperature lower than the saturation temperature. This is the case, for example, for liquid ...
In thermodynamics, vapor quality is the mass fraction in a saturated mixture that is vapor; [1] in other words, saturated vapor has a "quality" of 100%, and saturated liquid has a "quality" of 0%. Vapor quality is an intensive property which can be used in conjunction with other independent intensive properties to specify the thermodynamic ...
When an object is immersed in a liquid, the liquid exerts an upward force, which is known as the buoyant force, that is proportional to the weight of the displaced liquid. The sum force acting on the object, then, is equal to the difference between the weight of the object ('down' force) and the weight of displaced liquid ('up' force).
"The majority of the adult body is water, up to 60% of your weight," says Schnoll-Sussman, adding that the average person's weight can fluctuate one to five pounds per day due to water.
P water S = Partial pressure of water in saturated air (that is, at 100% relative humidity; in this case the partial pressure is equal to the vapour pressure, which can be determined as a function of ambient temperature) P water B = Partial pressure of water in saturated air in 37 °C = 47 mmHg; T S = Standard temperature in kelvins (K) = 273 K
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More specifically, whether the fatty acids are saturated or unsaturated has an effect on membrane fluidity. Saturated fatty acids have no double bonds in the hydrocarbon chain, and the maximum amount of hydrogen. The absence of double bonds decreases fluidity. Unsaturated fatty acids have at least one double bond, creating a "kink" in the chain.