Search results
Results from the WOW.Com Content Network
≡ 240 mL [18] = 2.4 × 10 −4 m ... 1 ⁄ 100 of the energy required to warm one gram of air-free water from 0 °C to 100 °C at a pressure of 1 atm ≈ 4.190 02 J ...
Instrument manufacturers are often able to provide test methods developed to fully exploit the specific design which they are selling. The search for the most appropriate instrument is a zealous task which is in itself part of the measurement. [1] The conditions under which the measurement is made has a considerable influence on the result.
The term molality is formed in analogy to molarity which is the molar concentration of a solution. The earliest known use of the intensive property molality and of its adjectival unit, the now-deprecated molal, appears to have been published by G. N. Lewis and M. Randall in the 1923 publication of Thermodynamics and the Free Energies of Chemical Substances. [3]
Volume to mass conversions for some common cooking ingredients; ingredient density g/mL [note 5] metric cup 250 mL imperial cup ≈284 mL U.S. customary cup ≈237 mL [note 6] g oz g oz g oz water [note 7] 1 [note 8] 249–250 8.8 283–284 10 236–237 8.3 [note 9] granulated sugar 0.8 [20] 200 7.0 230 8.0 190 6.7 wheat flour 0.5–0.6 [20 ...
A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a nearly constant volume independent of pressure. It is one of the four fundamental states of matter (the others being solid, gas, and plasma), and is the only state with a definite volume but no fixed shape.
Even in oceans at 4 km depth, where the pressure is 400 atm, water suffers only a 1.8% decrease in volume. [ 100 ] The viscosity of water is about 10 −3 Pa· s or 0.01 poise at 20 °C (68 °F), and the speed of sound in liquid water ranges between 1,400 and 1,540 metres per second (4,600 and 5,100 ft/s) depending on temperature.
Because the liquid-to-gas expansion ratio of nitrogen is 1:694 at 20 °C, a tremendous amount of force can be generated if liquid nitrogen is rapidly vaporised in an enclosed space. In an incident on January 12, 2006, at Texas A&M University, the pressure-relief devices of a tank of liquid nitrogen were malfunctioning and later sealed. As a ...
The flash point of pure ethanol is 13 °C (55 °F), [89] but may be influenced very slightly by atmospheric composition such as pressure and humidity. Ethanol mixtures can ignite below average room temperature. Ethanol is considered a flammable liquid (Class 3 Hazardous Material) in concentrations above 2.35% by mass (3.0% by volume; 6 proof).