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What do actual vapor pressure and dew point temperature really tell us about the atmosphere?
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What happens when pressure falls and temperature rises?
Temperature is really just the amount of kinetic energy in the molecules of a substance. If you add more energy by heating the substance then the molecules dash about faster and faster. This increases the pressure if the substance is constrained, like gas in a jar or in a bomb.
What is the atmospheric pressure if the temperature is at 0c the velocity of sound is 331.0ms density of air is 1.295kg and what formula is used?
Sorry, the atmospheric pressure has really nothing to do with the speed of sound at 0c, but he temperature is very important Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure". The air pressure and the air density are proportional to each other at the same temperature.
How does air temperature affect humidity?
When you go higher into the air, air pressure starts to decrease and when you are at sea level, air pressure very high. When the temperature is really high, air molecules start bouncing around rapidly and that creates high air pressure. This pressure is enough to blow up a balloon on it's own. When the temperature is really cold, air molecules contract and forms low pressure. This can actually shrink a balloon without the air going out of the balloon in a matter of minutes. No answer for humidity yet.
What is antarctica's air pressure?
It's really not that different from the rest of the world, since it still has an entire atmosphere of air weighing down on it which is what air pressure is. If Antarctica were at sea level it would tend to be slightly higher due to high pressure prevailing (climatologically at the poles). But since much of Antarctica is up pretty high in elevation (several thousand meters) just due to there being so much ice on top of the land, the actual air pressure is pretty low - on par with that of a location in the mountains.
The velocity of sound in air is independent of change in what variable?
The velocity of sound in air is independent of change of the atmospheric pressure, but is really dependent on the temperature.
Does temperature affect tire pressure?
Yes, if the weather is hot - Air in the tire will expand slightly and will have an effect on the pressure as it wants to take up more room in size. If the weather is cold the air will contract and more air will be needed - the reason for the extra air is so that the tire doesn't go down. The Math: Pressure increases directly with Temperature. So there's an easy formula to use.Since 0 psig in a tire is really 14.7 psia and 0oC is really 273oK the temperature and pressure for the tires you fill is Start Pressure = (Pressure on the gauge + 14.7) psia, and Start Temperature = (Measured temp +273) . Temperature at the end = End Temperature = (Measured temp in C + 273), and pressure at the new temperature = End Pressure So: End Pressure = Start Pressure x End Temperature / Start Temperature Since End Pressure includes an extra 14.7 psia, subtract it out and that's the pressure on the gauge in psig.
Does rubbing alcohol evaporate faster when cooled?
the atmosphere determines rate of evaporation. if the atmosphere is as dense as a liquid within the atmosphere there is no evaporation at all. on earth, cooler atmospheres are generally less dense, so it's not cooling the liquid alcohol as much as providing it with a supply of less dense atmosphere that will make a liquid, alcohol, evaporate faster. on the extreme, putting a liquid into a vacuum will cause it to almost immediately evaporate, a.k.a. standardize the temperature and pressure of its atmosphere. there is really no such thing as evaporation as much as there is homogenization, standardization, of its atmosphere.
What happens when pressure falls and temperature rises?
Temperature is really just the amount of kinetic energy in the molecules of a substance. If you add more energy by heating the substance then the molecules dash about faster and faster. This increases the pressure if the substance is constrained, like gas in a jar or in a bomb.
What is the atmospheric pressure if the temperature is at 0c the velocity of sound is 331.0ms density of air is 1.295kg and what formula is used?
Sorry, the atmospheric pressure has really nothing to do with the speed of sound at 0c, but he temperature is very important Scroll down to related links and read the short article "Speed of sound - temperature matters, not air pressure". The air pressure and the air density are proportional to each other at the same temperature.
When the temperature is constant gas volume will decrease as the pressure decreases is that true?
If I remember correctly it is a little more complicated than that. The general equation PV=nRT for an ideal gas is elementary knowledge. The fact is that when you increase temperature many things can happen. It depends on how you treat your system. In general if you increase temperature in an open system the pressure will remain fairly constant, but the volume will increase. If it is a closed system in which the volume is not allowed to expand the pressure will increase with increased temperature. You also have to remember chemical properties also such as phase changes. Hope that rambling mess helps lol.
How are conditions of pressure and temperature?
Temperature is particles moving really fast and bumping in to each other (in a sense, but nothing really "touches" other things atomically or else they fuse), unless of course, they are at 0 D. kelvin, and pressure is just density in the air or in another sense it's compression.
Does the vapor pressure depend on the surrouding pressure?
No. It depends on the temperature. The only time you will really consider Pext is when you want to determine whether the substance will boil, which is when Pext = Pvap.
How do pressure cookers work and are they really much quicker?
Pressure cookers work because when you increase pressure, water boils at a higher temperature. Water normally boils at 212 degrees F. Under 15psi of pressure (standard in a pressure cooker), it boils at 257 degrees F. Since your food is cooking at a higher temperature, it will cook faster.
If the boiling points of two compounds differ by fifty degrees c at atmospheric pressure what would be the effect of dropping the pressure to ten mm?
Any time you drop the external temperature, it is going to make it easier for compounds to boil since the atmosphere is no longer exerting as much force down on the liquid. However, whether one or both compounds boils at that temperature depends less on the difference between their two boiling points and more on what their vapor pressure is at whatever temperature they are at. Compounds boil when their vapor pressure (the pressure of the molecules that naturally escape the solid or liquid because they have more energy) is the same as the external pressure. The vapor pressure of a substance depends only on temperature, which is why the point at which something boils is tied to temperature. Take water for instance. Water boils at 100 degrees C at sea level because at that temperature its vapor pressure is 1 ATM (760 mm Hg). At room temperature (25 degrees C) water has a vapor pressure of around 22 mm Hg. Since its vapor pressure at 25 degrees C exceeds 10 mm Hg, it would indeed boil at that pressure. Now if a liquid had a boiling point that was 50 degrees below water's, it would presumably boil at that temperature as well (although not necessarily... depends on other factors). If a liquid had a boiling point that was 50 degrees higher than water, then there is a decent chance it may not boil, but you would really need info on its vapor pressure at room temperature to know.
How hot is Jupiter?
Jupiter has a cold exterior atmosphere from 112 Kelvin (-161.15oC) to 165 Kelvin (-108.15oC). Deeper within the layers, pressure causes the temperature to rise to several thousand degrees Celsius.At the same pressure as Earth's atmosphere, the temperature is -110°C (-166°F), however, the tops of the visible clouds are approximately -70°C (-94°F). The temperature reaches 70°C (126°F) when the atmospheric pressure is about ten times as great as earth. The core can reach up to 36000°C (64000°F), much hotter than the surface of the Sun.At an altitude of 1000 km above the planet, the atmosphere is excited by radiation and magnetic influences (and possibly gravity flux) to a temperature of 700°C (1260°F), but the hydrogen gas is so thin that the actual heat involved is negligible.Jupiter can get really hot.Jupiter has an outer temperature - depending on the location within its atmosphere - of between 112 Kelvin (-161.15oC) and 165 Kelvin (-108.15oC). Deeper within the layers, pressure causes the temperature to rise to several thousand degrees Celsius.At the same pressure as Earth's atmosphere, the temperature is -110°C (-166°F), however, the tops of the visible clouds are approximately -70°C (-94°F). The temperature reaches 70°C (126°F) when the atmospheric pressure is about ten times as great as earth. The core can reach up to 36000°C (64000°F), much hotter than the surface of the Sun.At an altitude of 1000 km above the planet, the atmosphere is excited by radiation and magnetic influences (and possibly gravity flux) to a temperature of 700°C (1260°F), but the hydrogen gas is so thin that the actual heat involved is negligible.Read more: How hot is Jupiter-163° C to -121° Cso -142º CExcept for the top of the Great Red Spot, the white clouds are the highest, with cloud-top temperatures of about 120 kelvins (K; -240 °F, or -150 °C). The tawny clouds that are widely distributed over the planet occur at lower levels, and appear to form at a temperature of about 200 K (-100 °F, -70 °C). The dark brown ammonia clouds, detected at still lower levels, are still measured temperature is 260 K (8 °F, -13 °C). Dark regions occur near the heads of white plume clouds near the planet's equator, where temperatures as high as 300 K (80 °F, 27 °C) have been measured. At still lower depths in the atmosphere, astronomers expect to find water-ice clouds and water-droplet clouds. When the probe from the Galileo spacecraft entered Jupiter's atmosphere, it failed to find these water clouds, even though it survived to a pressure level of 22 bars—nearly 22 times sea-level pressure on Earth—where the temperature was more than 400 K (260 °F, 130 °C). "Jupiter." Encyclopædia Britannica. Encyclopædia Britannica Online School Edition. Encyclopædia Britannica, 2010. Web. 29 Jan. 2010 .
How does air temperature affect humidity?
When you go higher into the air, air pressure starts to decrease and when you are at sea level, air pressure very high. When the temperature is really high, air molecules start bouncing around rapidly and that creates high air pressure. This pressure is enough to blow up a balloon on it's own. When the temperature is really cold, air molecules contract and forms low pressure. This can actually shrink a balloon without the air going out of the balloon in a matter of minutes. No answer for humidity yet.
The pressure of gas always increases with increasing temperature?
True.The Ideal Gas Law is PV = nRT, where P is pressure, V is volume, n is the amount of gas, R is the gas constant, and T is temperature. You can see clearly that, all other things being equal, pressure is directly proportional to temperature.
