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April 17, 2014

Search: at what temperature will water boil in that pressure cooker?

Number of results: 41,107

physics
Because of the pressure inside a popcorn kernel, water does not vaporize at 100C. Instead, it stays liquid until its temperature is about 175C, at which point the kernel ruptures and the superheated water turns into steam. How much energy is needed to pop 95.0 g of corn if ...
Wednesday, November 16, 2011 at 2:10am by conrado sanchez

Physics
Because of the pressure inside a popcorn kernel, water does not vaporize at 100C. Instead, it stays liquid until its temperature is about 175C, at which point the kernel ruptures and the superheated water turns into steam. How much energy is needed to pop 95.0 g of corn if ...
Wednesday, November 16, 2011 at 2:21am by conrado sanchez

Chemistry
At a certain temperature, the solubility of gas in water at 2.04 is 48.0 . Calculate the solubility of gas in water, at the same temperature, if the partial pressure of gas over the solution is increased from 2.04 to 6.00 .
Friday, February 8, 2013 at 12:40am by Sam

Chemistry
Explain what happens when you add sodium chloride to boiling water. I know that when sodium chloride is added to water, the boiling point of water increases. What happens when it is added to already boiling water? I know it increases the temperature, I just don't know why... I...
Wednesday, January 31, 2007 at 7:19pm by Mercedes

chem
If the total pressure is 752 mm Hg, that is the pressure of the H2 gas + the pressure of the water. So look up the vapor pressure of water at 25 degrees C (at moderate temperatures I remember that the vapor pressure of water is approximately the samae as the T reading in C---...
Sunday, May 11, 2008 at 8:15pm by DrBob222

Chemistry 2
An aqueous solution has a vapor pressure of 81.1 at 50 . The vapor pressure of pure water at this temperature is 92.6. What is the concentration of in mass percent?
Thursday, January 27, 2011 at 9:42pm by Jesse

Physics
Water flows at 0.25L/s through a 9.0-m-long garden hose 2.0cm in diameter that is lying flat on the ground.The temperature of the water is 20degC. What is the gauge pressure of the water where it enters the hose? in Pa
Wednesday, December 5, 2012 at 6:43pm by Cassie

chemistry
The vapor pressure of water at 80 degrees c is 355mmHg. A 100cm3 vessel contained wateraturated oxygen at 80 degrees c., the total gas pressure being 760 mmHg. The contents of the vessel were transferred by pumping to a 50cm3 vessel at the same temperature. What were the ...
Wednesday, October 26, 2011 at 9:22pm by el

chemistry
cold water mass of calimeter+ water: 68.66g mass of calimeter: 19.19g mass of water: 49.47g final temperature of water: 39.1C initial temperature of water: 25.5C delta(T) of water: 13.6C hot water mass of calimeter+ water: 79.55g mass of calimeter: 20.61g mass of water: 58.94g...
Wednesday, November 30, 2011 at 10:44pm by Yuli

College Chemistry
The boiling point of a liquid at atmospheric pressure is the temperature: a. at which bubbles of vapor expand within the liqud b. at which the liquid solidifies c. at which the vapor pressure first exceeds the critical temperature d. at which the vapor pressure is equal to the...
Sunday, March 28, 2010 at 3:50pm by Donna

Chemistry
Total pressure is 750 mm Hg. Total pressure = pressure H2 + pressure water vapor. Look up the vapor pressure of water at 22 C.
Friday, February 19, 2010 at 12:12am by DrBob222

chemistry
Exactly 1.0 L of hydrogen gas (H2) is collected over water at 292 K under a total pressure of 152 torr. If the vapour pressure of water is 16.5 torr at this temperature, what is the mole fraction of hydrogen in the gas sample? Volume of CO2 = L Mole
Wednesday, December 7, 2011 at 10:19pm by nath

Controls
If you have a tank of water at sea level and the temperature of the water in the tank is 110 degrees F, what is the height of the water if the pressure at the bottom of the tank is 95 inches of mercury(absolute)
Monday, January 31, 2011 at 7:00pm by Kelsey

Chemistry
A scuba diver creates a spherical bubble with a radius of 4.0cm at a depth of 30.0m where the total pressure (including atmospheric pressure) is 4.00 atm. What is the radius of the bubble when it reaches the surface of the water? (Assume atmospheric pressure to be 1.00atm and ...
Saturday, November 20, 2010 at 3:50pm by Jess

PHYSICS
One mole of oxygen gas is at a pressure of 5.25 atm and a temperature of 29.5C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature? ____C (b) If the gas is heated so that both the pressure and volume are doubled, what is the...
Wednesday, November 14, 2012 at 11:12pm by Sarah

chemistry
a sample of gas is collected over water at a temperature of 35 degrees celcius when the barometric pressure reading is 742.0 torr what is the partial pressure of the dry gas?
Tuesday, May 18, 2010 at 4:44pm by Jimmy

chemistry
the vapor pressure of water at 45.0 c is 71.93 mmhg. Calculate the vapor pressure of a solution of 1.50 m Al(NO3)3 at this temperature (assume 100% dissociation)
Tuesday, July 16, 2013 at 10:51am by michael

Chemistry
Oxygen gas, from the decomposition of KClO3, was collected by water displacement. The pressure and temperature in the lab during the experiment were 451.0 torr and 20.0 C. What was the partial pressure of oxygen?
Tuesday, March 18, 2014 at 11:06am by Austin

science
A weather balloon carries instruments that measure temperature, pressure, and humidity as it rises through the atmosphere. Suppose such a balloon has a volume of 1.2 m^3 at sea level where the pressure is 1 atm and the temperature is 20C. When the balloon is at an altitude of...
Saturday, November 19, 2011 at 11:58pm by Shirley

Chemistry Lab+Help
Okay, basically what we did in the lab was fill up an empty soda can with about 5mL of water, and we had to heat it up to a boiling point. After that we turned the soda can upside down into a beaker with cold water. After a minute or so, the can just snapped in half. I have to...
Sunday, March 22, 2009 at 5:51pm by Chopsticks

chemistry
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.8 of water upon warming from 25degree C to 50degree C . Assume that the water is initially saturated with nitrogen and oxygen gas at 25degree C...
Sunday, January 24, 2010 at 11:05pm by bf

Thermodynamics
Water vapor was flowing through the pipeline at 0,8 MPa pressure and 250 C temperature. A cylinder-piston mechanism with a spring was attached to the pipeline with a closed valve. The valve was opened and the pressure inside the cylinder increased up to 0,8 MPa. Then the ...
Wednesday, March 13, 2013 at 7:21pm by Moussa

Physical Chemistry
A mole of air (80% Nitrogen, and 20% Oxygen by volume) at 298.15K is brought into contact with liquid water which has a vapor pressure of 3168Pa at this temperature. a) what is the volume of the dry air if the pressure is 1 bar? b) what is the final volume of the air saturated...
Monday, February 6, 2012 at 10:45pm by Nate

science
3. Liquefied air (assuming it is only O2 and N2) is kept in a container where pressure and temperature can be controlled. a. What is the maximum temperature at which the mixture exists as a liquid? If this temperature is kept constant, what is the minimum pressure to keep the ...
Tuesday, March 11, 2014 at 2:13pm by haha

Chemistry
The oxygen gas emitted from an aquatic plant during photosynthesis is collected over water at a temperature of 25 C and a total pressure of 760 torr . what is the partial pressure of the gas?
Friday, April 16, 2010 at 2:14pm by Zoe

Physics
Jenny measured the temperature of the water in a beaker, set the beaker aside, and then measured the temperature again after an hour. If the initial temperature of the water was 30C and the final temperature was 20C, which of the following could be the temperature of the ...
Thursday, August 23, 2012 at 9:18pm by Meka

chemistry
solve for the new pressure when each of the following temperature changes occurs, with n and V constant: b. an aerosol can has a pressure of 1.40 atm at 12 celcius.what is the final pressure in the aerosol can if it is used in a room where the temperature is 35 celcius?
Sunday, June 27, 2010 at 12:26am by Jetta

chem
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.2L of water upon warming from 25C to 50C . Assume that the water is initially saturated with nitrogen and oxygen gas at 25C and a total ...
Monday, January 25, 2010 at 10:33pm by rc

chemistry
At 16C a sample of ammonia gas exerts a pressure of 11.7 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature so the inital Temp=16 C initial Pressure. 11.7 final pressure-unknown temperature-same what next?
Sunday, October 17, 2010 at 8:20pm by april

chem Help please!
A water heater is fueled by the combustion of propane as described by the following reaction: C3H8(g) + 5 O2(g) --> 3 CO2(g) + 4 H2O(l) a) Determine how much heat is released if 11.2 moles of propane are burned at 298 K and at a constant pressure of 1.00 bar. b) Assume that...
Saturday, October 20, 2012 at 3:28pm by Kjd

algebra
The volume of gas varies directly with temperature and inversely with pressure. Volume is 100 m^3 when temperature is 1508 degrees and pressure is 15 lb/cm^2. What is the volume when the temperature is 2508 degrees and the pressure is 20 lb/cm^2?
Tuesday, February 12, 2013 at 11:51am by ciara

chemistry
A 10 kg block of ice has a temperature of -13C. The pressure is one atmosphere. The block absorbs 4.11 106 J of heat. What is the final temperature of the liquid water?
Tuesday, May 10, 2011 at 10:55am by Anonymous

science
1. What will happen to the pressure in your tires if the temperature drops 40 degrees over the night? a) Pressure will increase b) Pressure will decrease c) Pressure will not change d) Cannot determine
Friday, February 15, 2008 at 5:56pm by josh

Chemistry
THE VOLUME WOULDN'T HAVE ANY EFFECT ON THE TEMPERATURE. FOR A GAS IN A CLOSED CONTAINER, WITH THE PRESSURE CONSTANT THE TEMPERATURE DOESN'T CHANGE THE VOLUME. WHEN TEMPERATURE INCREASES, PRESSURE INCREASES. THEY ARE DIRECTLY PROPORTIONAL.
Sunday, August 28, 2011 at 12:39am by Davis

Chemistry
A scuba diver takes a 2.3 balloon from the surface, where the pressure is 1.1 and the temperature is 28, to a depth of 35 , where the pressure is 4.5 and the temperature is 14.
Tuesday, March 19, 2013 at 6:55pm by Mary

chemistry
You didn't fill in P1 or P2. I gave you P at 65.0 C = 760 torr. You have let 65 (338K) = T1 so P1 = 760. Solve for P2. Remember in this type problem that the vapor pressure of ANYTHING at it's boiling point is the pressure of the atmosphere. So if the pressure on Monday is 700...
Monday, January 17, 2011 at 2:50pm by DrBob222

Chem
A scuba diver creates a spherical bubble with a radius of 4.0 at a depth of 30.0 where the total pressure (including atmospheric pressure) is 4.00 . What is the radius of the bubble when it reaches the surface of the water? (Assume atmospheric pressure to be 1.00 and the ...
Saturday, November 20, 2010 at 3:25pm by Jess

physics
The "pressure at the surface of the water", what is above the water? Air at 100kPa? So, is this gauge pressure in relation to ouside the tank, or absolute pressure?
Friday, January 29, 2010 at 2:44pm by bobpursley

Chemistry
Suppose that you are planning a backpacking trip and will need to boil 40 L of water for your group. What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water (...
Sunday, October 31, 2010 at 9:47pm by Kristen

chemistry
Suppose that you are planning a backpacking trip and will need to boil 40 L of water for your group. What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of C7H16; 15% of the heat generated from combustion goes to heat the water...
Sunday, October 31, 2010 at 11:04pm by Anonymous

English
1) When I set the table, I put on the the table cloth, the cutlery, the napkins, the soup and dinner plates, the water and wine bottles, the oil and vinegar bottles, the pepper shaker, and the salt cellar. Those are the basics! 2) I cook tomato sauce in a saucepan and the eggs...
Tuesday, December 6, 2011 at 10:13am by Writeacher

Chemistry
How would i figure out the vapor pressure at room temperature? (atmospheric pressure is 760 mm hg and the temperature is 20C.)
Monday, February 11, 2008 at 6:39pm by Anonymous

AP Chemistry
These are some lab questions from the following lab: Vapor Pressure and Enthalpy of Vaporization of Water 1. Why does vapor pressure change with temperature? 2. The assumption was made that the vapor pressure of water is negligible at a temperature close to zero. Find the ...
Sunday, January 28, 2007 at 4:45pm by anonymous

Chemistry
Three of the primary components of air are carbon dixode, nitrogen, and oxygen. In a sample containing a mixutre of only these gases at exactly one atmosphere pressure, the partial pressure of carbon dixoide and nitrogen are given as Pco2 = 0.285torr and Pn2=593.525torr. What ...
Wednesday, March 25, 2009 at 12:12am by Chopsticks

Chemistry
PLEASE HELP!! On a clear day at sea level, with a temperature of 25 C, the partial pressure of N2 in air is 79 kPa and the concentration of nitrogen in water is 5.3 x 10-4 M. When the partial pressure of N2 is ________ kPa, the concentration in water is 1.1 x 10-4 M.
Friday, May 25, 2012 at 12:08am by Henry

Science
Water freezes at 0 Celisus. If a temperature drop is causing a glass of water to freeze, how would a thermometer in the water most likely change as the water freezes? A. The temperature would keep rising steadily. B. The temperature would keep falling steadily. C. The ...
Sunday, October 20, 2013 at 5:46pm by Anne

chemistry112
The partial water vapor pressure over the soulution of glucose (C6H12O6) in water is 715 torr at 100 degrees celsius. Find freezing temperature of this solution.
Wednesday, September 7, 2011 at 10:58am by Dominique

chemistry
i keep trying to do these problems and i don't understand them. please help me!! 1. Gas stored in a tank at 273 K has a pressure of 388 kPa. The save limit for the pressure is 825 kPa. At what temperature will the gas reach this pressure? A. 850 K B. 925 K C. 580 K D. 273 K 2...
Friday, October 10, 2008 at 9:13am by Please Help!

Chemistry
A vessel of 9.49 L in volume contains 3.37 L of pure water at 25C. A partial pressure of 4.73 atm of CO2 is quickly injected into the space above the water. Calculate the partial pressure of carbon dioxide remaining once the solution has become saturated with the gas. Henry'...
Friday, February 2, 2007 at 2:36pm by Sally

Chemistry
A vessel of 9.49 L in volume contains 3.37 L of pure water at 25C. A partial pressure of 4.73 atm of CO2 is quickly injected into the space above the water. Calculate the partial pressure of carbon dioxide remaining once the solution has become saturated with the gas. Henry'...
Friday, February 2, 2007 at 5:08pm by Sally

chemistry
Look up the vapor pressure of water at 35 degrees celsius (note the correct spelling of celsius) and add it to the pressure of N2 gas. Probably the water pressure will be listed in mm Hg and you must convert either N2 pressure or vapor pressure H2O before adding.
Friday, April 9, 2010 at 7:05pm by DrBob222

physics
heat to boil 1 gram water: mcdeltaT+ Lv*m 1*1*(100-22)+540*1 heat to boil 1 gram Hg mcdeltatT+Lv*m 1*.03(357-22)+65*1 do the math.
Wednesday, January 25, 2012 at 8:31pm by bobpursley

chemistry
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant. For example, the residual pressure in a can is 1.36 atm when it is sitting on a shelf ...
Sunday, December 6, 2009 at 2:37pm by Katie

physics,plz.....give me answer as soon as possible
a pond of water filled with water apto 60m. 1)write formulato find the pressure of water exerted on the base of pond. 2)calculate the pressure exerted by the water on the base of pond?density of water is 1000kg/m3 3)half of the water was removed from the pond.what could be the...
Wednesday, November 24, 2010 at 11:35am by sweetie

chemistry
1. Mass of flask, boiling chips, foil cap and unknown after cooling reaction 83.350g 2. Mass of flask, boiling chips and foil cap. 82.657 3. water bath temperature C 95.0 C 4. Barometric pressure in Hg 30.09 5. Accepted molar mass of unknown 86.2g/moles 6. Volume of flask 270 ...
Monday, June 14, 2010 at 12:42pm by Patty

physics
a pond of water filled with water apto 60m. 1)write formulato find the pressure of water exerted on the base of pond. 2)calculate the pressure exerted by the water on the base of pond?density of water is 1000kg/m3 3)half of the water was removed from the pond.what could be the...
Wednesday, November 24, 2010 at 9:50am by sweetie

math
if takes 6 minutes to hard-boil 3 goose eggs when dropped into boiling water, how long will it take to hard-boil 6 goose eggs? About the same amount of time. 18 minutes
Sunday, October 1, 2006 at 2:54pm by monica

chemistry
The water is what changed temperature by 13.7 degrees C. Isn't your formula q = mass water x specific heat water x delta T? The water temperature is the vehicle by which you determine what NH4Cl does when placed in solution and by how much.
Wednesday, April 7, 2010 at 7:23pm by DrBob222

chemistry
A biology experiment requires the preparation of a water bath at 37.0C (body temperature). The temperature of the cold tap water is 22.0C, and the temperature of the hot tap water is 55.0C. If a student starts with 70.0 g of cold water, what mass of hot water must be added ...
Wednesday, November 10, 2010 at 11:49pm by Anonymous

8th grade Composition
Identify parts of Speech for sentence below, on numbered word: 1 2 3 Before the eruption, Mount St.Helena was 4 like a giant pressure cooker.
Tuesday, May 25, 2010 at 11:11pm by Matthew

Chemistry
A sample of 40.0 mL of hydrogen is collected by water displacement at a temperature of 20 degrees Celcius. The barometer reads 751 torr. What is the volume of the hydrogen at STP (standard temperature and pressure)?
Sunday, December 16, 2012 at 8:03pm by Kia

Chemistry...
Total pressure= sum of the partial pressures 762 torr-water vapor pressure=O2 pressure water vapor pressure at 25C =23.756 torr But check the reference value.
Wednesday, February 20, 2013 at 7:11pm by Devron

Honors chemistry
I suppose you mean 4.184 J/g*C for sp.h. H2O. q = mass H2O x sp.h. x (Tfinal-Tinitial) q = 307 x 4.184 x (100-20.15). That will give you q in joules needed to raise the temperature of the water from 20.15 to 100. I will not boil it. You will need an additional 2260 J for each ...
Sunday, September 23, 2012 at 8:52pm by DrBob222

chemistry
Methanol boils at 65Celcius. The vapor pressure of ethanol at 65Celcius is at 410 torr. for a mixture containing .200 mol of methanol and .100 mol of ethanlol (at 65 Celcius) calculate the: 1. partial pressure of each liquid 2. total vapor pressure of the solution 3. percent ...
Sunday, October 25, 2009 at 12:12pm by Cerise

Chemistry
Anonymous, that is nonsense. It sounds like someones dream of a new gadget for distilling that has never been built. Alcohol molecues are not held with intermolecular forces strong as water to water, so when energy is added (heat), the alcohol is the first to break free of ...
Thursday, October 30, 2008 at 8:10pm by bobpursley

Chemistry
At a certain temperature, the solubility of N_2 gas in water at 2.38 atm is 56.0 mg of N_2 gas/100 g of water. Calculate the solubility of N_2 gas in water, at the same temperature, if the partial pressure of N_2 gas over the solution is increased from 2.38 atm to 5.00 atm.
Saturday, February 4, 2012 at 8:15pm by Becca

Chemistry
Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature because of the following endothermic reaction. NH4NO3(s) + H2O(l) = NH4NO3(aq) H = +25.7...
Tuesday, February 1, 2011 at 2:33am by Don

chemistry
a balloon is filled with 500 mL of helium at a temperature of 27 degrees celsius and 755 mmHg as the balloon rises in the atmosphere the pressure and temperature drop what volume will it have when it reaches an altitude where the temperature is -33 degrees celcius and the ...
Tuesday, May 8, 2012 at 8:01pm by candi

chemistry
a balloon is filled with 500 mL of helium at a temperature of 27 degrees celsius and 755 mmHg as the balloon rises in the atmosphere the pressure and temperature drop what volume will it have when it reaches an altitude where the temperature is -33 degrees celcius and the ...
Tuesday, May 8, 2012 at 8:04pm by candi

physical science
A Weather balloon carries instruments that measure temperature, pressure, and humidity as it rises through the atmosphere. Suppose such a balloon has a volume of 1.2 m3 at sea level where the pressure is 1 atm and the temperature is 20oC. When the balloon is at an altitude of ...
Thursday, October 4, 2012 at 8:44pm by maria

physics
An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of 167 kPa when the temperature is 0.00C. What is the gauge pressure (in kPa) of the air in the tires when its temperature rises to 27.0C and its ...
Wednesday, April 1, 2009 at 8:31pm by chirayu

chemistry
A bottle of rubbing alcohol (C3H7OH) from the store is a 70% solution by mass. Determine the total vapor pressure inside the closed bottle. The vapor pressure of the water at room temperature is 24mmHg; the vapor pressure of the volatile rubbing alcohol is 44mmHg.
Thursday, April 17, 2008 at 5:04pm by billy bob j

chemistry
Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 445 ? This is how I am solving this problem, but when I enter the answer it says im wrong. Can someone help with the ...
Saturday, January 24, 2009 at 10:36pm by confused

Chemistry
You have a 22L cylinder of helium at a pressure of 150atm and a temperature of 31C. How many ballons can you fill, each with a volume of 5.0L, on a day when the atmospheric pressure is 755mmHg and the temperature is 22C?
Sunday, September 27, 2009 at 9:26pm by Eric

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
Tuesday, June 28, 2011 at 6:29pm by Sophie

Chemistry
A 2.64 L container is filled with 169 g of argon. (a) If the pressure is 10.0 atm, what is the temperature? ____K (b) If the temperature is 225 K, what is the pressure? What Gas law formula would I use?
Tuesday, June 28, 2011 at 6:36pm by Sophie

Chemistry
A sample of argon has a pressure of 1.021 atm at a temperature of 89.4 degC. Assuming that the volume is constant, at what temperature will the gas have a pressure of 1016.56 mmHg
Sunday, February 9, 2014 at 8:04pm by Anonymous

Chemistry
A sample of argon has a pressure of 1.021 atm at a temperature of 89.4 degC. Assuming that the volume is constant, at what temperature will the gas have a pressure of 1016.56 mmHg
Sunday, February 9, 2014 at 8:04pm by Anonymous

physcial science
As water freezes, its temperature does what? a) increase b) decrease c) first increase, then decrease d) does not change The temperature of freezing water is 0o C. The temperature of the water will remain at zero C until all of the water has frozen; therefore, the answer to ...
Friday, June 22, 2007 at 8:08pm by dora

chemistry
A sealed flask contains 0.40 g of water at 28 deg. celsius. The vapor pressure of water at this temperature is 28.36 mmHg
Sunday, September 6, 2009 at 8:54pm by jeff

Physical Chemistry
Assuming that the osmotic pressure of a sample of sea water at 10 C is 25.5 atm, calculate the work required under reversible conditions at this constant temperature to prepare 9 litre of pure water from this sea water. (Take the available volume of sea water as infinite and ...
Thursday, February 24, 2011 at 5:55pm by Nicole

science; AP Chem
I don't know how to find the kpa for 35.78 m in this question. I know its a P1V1=P2V2 question, i just need the kpa for 35.78m pls! Question: Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m below ...
Saturday, September 15, 2012 at 10:32pm by Anonymous

physics
a)a box having mass of 500kg is placed on a horizontal surface.find the pressure exerted on the surface?do not forget to write formula. b)a pond of water filled with water upto 60m.1)write formula to find the pressure of water exerted on the base of pond.2)calculate the ...
Wednesday, November 24, 2010 at 8:32am by sweetie

Chemistry
An aqueous CaCl_2 solution has a vapor pressure of 82.1mmHg at 50C. The vapor pressure of pure water at this temperature is 92.6mmHg. What is the concentration of CaCl_2 in mass percent?
Wednesday, January 20, 2010 at 7:46pm by melissa

thermal physics
An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of 167 kPa when the temperature is 0.00C. What is the gauge pressure (in kPa) of the air in the tires when its temperature rises to 27.0C and its ...
Thursday, April 2, 2009 at 2:04am by sweety

Chemistry!
A sealed flask contains 0.60 g of water at 28 degrees celcius. The vapor pressure of water at this temperature is 28.36 mmHg. What is the minimum volume of the flask in order that no liquid water be present in the flask?
Monday, December 6, 2010 at 6:48pm by BillNyeTheScienceGuy

Physics
Gauge pressure is the pressure relative to the ambient atmospheric pressure. A pascal (Pa) is the unit of measurement of pressure equivalent to 1 N (newton) acting on an area of 1 m². To produce a pressure sufficient to suck water to a height of 187 mm, the pressure is ...
Wednesday, November 25, 2009 at 8:10pm by MathMate

Gas laws and pressure
An automobile tire has a pressure of 325 kPa when the temperature is 10 degrees Celsius. If the temperature of the tire rises to 50 degrees Celsius and its volume is constant, what is the new pressure?
Wednesday, October 3, 2012 at 8:53pm by Britani

Chemistry
Sort each of the following events based on whether the solubility of the indicated gas will increase, decrease, or stay the same. Each phrase specifies the gas involved and the change in its environment. 1. The temperature is increased 2.the partial pressure of an anesthetic ...
Wednesday, January 23, 2013 at 8:29pm by Anon

Chemistry
A reverse osmosis unit is used to obtain drinkable water from a source that contains 0.530 g NaCl per liter. What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water? Assume room temperature or about 298 K. (Don′t ...
Monday, December 10, 2012 at 7:09pm by Anonymous

Chemistry
Look up the vapor pressure of H2O at various temperatuares. I assume you have a table in your text/notes; otherwise, you can look on the web. Look for a vapor pressure of 520 mm and the temperature that produces that will be the boiling point. WHY? Because boiling point is ...
Tuesday, October 4, 2011 at 3:50pm by DrBob222

chemistry
Benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1 C . At what temperature does benzene boil when the external pressure is 410 ? This is how I am solving this problem, ln(415/760)= (30720/8.314)*(1/80.1 - 1/T2) It is asking to answer using two...
Sunday, January 25, 2009 at 8:41pm by Lost

Science
Which one of the following is incorrect at room temperature? a.Water is liquid at 1 atmosphere b.ozone is gas at 1 Atmosphere c.O4 EXISTS AT VERY HIGH PRESSURE d.CH4 IS LIQUID AT LOW PRESSURE
Saturday, November 3, 2012 at 7:49pm by Ajai

Chemistry
2. In a calorimeter, 40.0g water at room temperature (20.4 C) was mixed with 60.0 g of water that was initially 48.9 C. The resulting mixture reached a maximum temperature of 37.3 C. Calculate each of the following. a) The heat released by the hot water. b) The heat absorbed ...
Tuesday, April 16, 2013 at 6:25pm by Joel

Physics
A 10 kg block of ice has a temperature of -13C. The pressure is one atmosphere. The block absorbs 4.10 106 J of heat. What is the final temperature of the liquid water?
Sunday, April 6, 2008 at 9:01am by Tim

chemistry
The Clapeyron-Clausisus Equation is ln(P2/P1) = dHvap/R [(1/T1)-(1/T2)]. Assuming that dHvap doesn't change with the temperature, this equation relates the change in vapor pressure and temperature to a substances enthalpy of vaporization (R is the molar gas constant). Use this...
Saturday, February 18, 2012 at 10:44pm by isabelle

Help please? Chemistry
At a certain temperature and pressure, 0.20 mol of carbon dioxide has a volume of 3.1 L. A 3.1-L sample of hydrogen at the same temperature and pressure ____. I think it's supposed to be "contains the same number of molecules" but I'm not sure. And there's also this one. I ...
Wednesday, May 27, 2009 at 11:46am by Kit

physics
A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the gaseous water ...
Tuesday, May 22, 2012 at 5:44am by sand

chemistry
A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the gaseous water ...
Thursday, May 24, 2012 at 1:21am by sand

physics
A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the gaseous water ...
Thursday, May 24, 2012 at 7:37am by sand

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