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We're warm blooded so we will always be warmer than the surroundings. Water sucks heat out of your body faster than air of the same temperature. Water only conducts heat 25 times better than air. However, it can suck heat out of you much more than 25 times faster. Water even feels colder than glass of the same temperature even though it's actually only half ...

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Volume is not a meaningful measure of quantity, for the reason you hint at in your question. You can say how many moles (or grams) of water you drank - more useful if you want to know about the impact on your body chemistry. This is related to my answer about scales measuring in grams rather than Newtons. Can you see how?

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When ice is heated from 0 to 4 degrees C, it actually contracts. The water molecules get closer together and the water occupies less volume. However, above 4 degrees C water expands(i.e. in your case). This is explained by Charles's law but any way this change in volume is not very drastic. This calculator might be helpful

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$1$ litre of water will remain almost $1$ litre as long as it is in the liquid state, no matter what the temperature is. The following formula gives you an order of magnitude estimate of the expansion: $$\Delta V=V_0\ \Delta T \ \beta$$ where $\beta$ is the coefficient of thermal expansion and $V_0$ is the initial volume. For water, $\beta \approx 10^{-... 4 The electromagnetic field in a medium gets attenuated exponentially. $$\mathbf E = \mathbf E_0e^{-x/\delta}$$ Where$x$is the distance the signal has traveled. Since the power of the signal is proportional to the square of the field, then the power will be attenuated by$P = P_0 e^{-2x/\delta}$. The quantity$\delta$is called skin depth. Its the ... 2 In general, what you would need to know to completely calculate the situation through, is the wavelength-dependent absorption of your plastic and water and the characteristics of your LED (wavelength, spectral broadness, etc.). And yes, in general, most plastics have IR-absorption (which is why IR spectroscopy is used in plastic analytics). But depending on ... 2 The curvature of the drop is influenced by the liquid-solid, solid-air and liquid-air interface forces. It can be determined by the Young-Laplace equation. For more details see this article 1 Hot water seems to freeze faster than cold water, known as the Mpemba effect$^{[1]}$. The effect was named after the Tanzanian student who in 1963 noticed that hot ice cream mix freezes faster than a cold one. The effect was first observed by Aristotle in the 4th century BC, then later Francis Bacon and René Descartes. Erasto Mpemba published a paper on ... 4 This phenomenon you are describing is called the Mpemba effect after a Tanzanian student, Erasto Mpemba, who in 1963 noticed the temperature of ice cream affected how quickly it mix freezed, though the effect had been observed much earlier (the earliest known observation of this was by Aristotle in 4 B.C, though Aristotle probably didn't use ice cream). ... 0 There is no spontaneous symmetry breaking at the water-gas phase transition, because it's a first-order transition and symmetry breaking typically happens at second-order phase transitions. Physicists usually think of a phase as a region of parameter space that's connected by paths that don't cross any phase transitions, so a physicist would indeed say that ... 2 I think the answer in this reddit discussion is basically right. But first, I should point out that pure diffusion is excidingly slow. A quick calculation shows that it would take 500 years for an average water molecule to diffuse 1 meter. Of course, in most cases real particles diffuse much faster thanks to small turbulent flows. This already hints at one ... 3 I've never been in a jacuzzi, but I'll try to imagine one. I read elsewhere that the bubbles are added using venturi-effect, or using a blower. Main thing is, they aren't pumped together with the water (the pump wouldn't like that anyway). The Venturi effect creates low pressure (suction) by increasing the velocity of the water in a narrow section of the ... 1 I think the answer is "no" in the case of NaCL (which is what we usually refer to as "salt"). Here are the arguments: First - the dissolution of (NaCl) salt in water is slightly endothermic (5 kJ/mol), but the dissolution of salt in ice is much more endothermic. This is nicely explained in this answer: adding salt to ice creates "ice above its melting point"... 8 The short answer: Cloudy ice is caused by gases (mainly nitrogen and oxygen) dissolved in the water that come out of solution when the water freezes. The small bubbles trapped in the ice cause the white appearance. Boiling the water removes the air dissolved in it, producing clear ice as a result. Assuming that other impurities don't produce the same cloudy ... 0 Salt causes the ice to melt at a lower temperature, but it also lowers the vapor pressure of the resulting liquid. This would result in a SLOWER rate of water turning into vapor, not a higher rate, because both sublimation and evaporation are directly dependent on the vapor pressure of the substance that is involved, and also on the partial pressure of that ... 1 From the book Freeze Drying by Georg-Wilhelm Oetjen: Oesterle showed that not only can tBA speed up the sublimation of ice from amorphous freeze-concentrated mixtures, but also similar effects can be achieved with volatile ammonium salts such as ammonium acetate, bicarbonate and formate. In other words, a scientist showed via experimentation that ... 0 As Floris mentioned sublimation is only from solid directly to vapor. When the water turns into vapor the salt will be left behind so the total energy transferred to the water from the environment will be the same as without the salt. However, when the solid turns into a liquid it will spread out into a puddle. When the liquid is spread out it's surface area ... 0 To a simplified, less dichotomous version of the question, that is, "Which melts faster? Ice from mostly pure water or ice from a salt water solution?" Would a layman-friendly answer not be: "It depends a great deal on the temperature outside of the ice"? (This is the same as saying the two different solutions have different specific freezing/melting ... 11 This answer was meant as a comment to @WetSavannahanimal aka Rad Vance but it is rather long and I hit the character limit. The reason for the opaque center should be due to the manner in which the water volume is freezing. Presumably the solution is not mixed and the outside freezes first forming a crystalline (ice) wall through which the gas cannot escape.... 1 Tap water has various impurites , which lowers the vapor pressure of the resulting mixture. This leads to a lower boiling temperature. 9 It is the water vapour present in the air around the bottle, that condenses on the cool surface of the water bottle,not from the water bottle itself. 0 Pure water is transparent because it is a liquid. Objects that are not transparent either scatter light, due to difference in refractive index between air and the substance or they absorb all the photons at the wavelength you are observing. Skin for example is opaque largely due to scattering of visible light. In fact liquid water is blue if you look ... 6 Here is a video that shows the ball behaviour you're describing. The phenomenon is explained by the Coandă effect: the tendency of a fluid jet to stay attached to a convex surface. Note that the ball does actually move in a kind of oscillatory motion. This is probably due to the water jet in the video not being highly stable. When more liquid is running ... 27 I'm really winging this one because the last time I did an equilibrium calculation was 35 years ago! But I'm fairly sure of a partial answer (see discussion at end). A gas's solubility in water (or liquid generally) almost always decreases with increasing temperature. This phenomenon is explained in a way very like the explanation of the increase in ... 2 I entirely agree with @Vintage in his offered answer to @BarsMonster's question. It seems to me that the question isn't how to make the most accurate, error free measurement for water. Rather, what's a practical method that can give a 1st order, believable result? Placing two clean metal plates reasonably close together where d/A >> 1 and then measuring the ... 19 Ice can be denser than water for certain values of$P,T$. Look at these two pictures taken from here: The darker areas in the second picture denotes areas of greater density. So you can clearly see that when pressure is increased, ice becomes denser than water along the coexistence line. For example at$T=400\$ K ice VII is clearly denser than water ...

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Nothing in the laws of thermodynamics forbids multiple liquid phases for a single substance. The only limit is the simultaneous coexistence of at most three phases (at triple points). Water has a solid-liquid-gas triple point and several soid-solid-liquid and solid-solid-solid triple points; see the phase diagram of water and ice. In addition, although not ...

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There is actually only one disordered phase - from a physicist's perspective, the liquid and the gas are actually the same phase because one can continuously vary the external parameters (temperature and pressure, in this case) to get from the liquid to the gas without passing through any phase transition, because the phase transition line terminates within ...

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The most immediate answer would seem to be that a great variety of different crystal phases can exist because their long-range order makes it possible to classify them based on the different symmetries of their lattice structure. Since the liquid (or amorphous solid) phase only has short-range order and the gaseous phase doesn't even have that, it seems ...

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