Friday

April 18, 2014

April 18, 2014

Number of results: 10,883

**Chemistry**

if pressure on a 2.50 ml gas sample were doubled from 0.500atm to 1.00 atm what would be gas volume at the new pressure?
*Wednesday, September 2, 2009 at 4:37pm by david*

**Chemistry**

a sample of gas has the pressure of 1120 mmhg and volume of 2.00 L. if the pressure is changed to 0.155 atm calculate the new volume
*Tuesday, November 29, 2011 at 5:50pm by erica*

**Chemistry **

The solubility of a gas at 7.0 atm of pressure is 0.52 g/L . How many grams of the gas would be disolved per 1.0 L if the pressure increased 40.0 percent?
*Monday, March 4, 2013 at 8:29am by Joy*

**Chemistry**

n = grams/molar mass Then PV = nRT R in 0.08206 L.atm/mol.K gives P in atm atm x 760 = p in torr 1 atm = 14.7 psi
*Wednesday, February 26, 2014 at 3:07pm by DrBob222*

**chemistry**

A sample of a gas occupies a volume of 1158 mL at 59ºC and 0.76 atm. What would be the new volume if temperature decreases to 40ºC and pressure increases to 1.40 atm?
*Wednesday, November 17, 2010 at 4:45am by Chris*

**chemistry**

The following reaction occurs in a 2.0L reactor at 800 degrees c. CO+H20-CO2+H2 The reactor is charged initially with 5.0 atm of CO and 8.0 atm of water vapor. Calculate the final pressure of hydrogen in the reactor.
*Wednesday, May 1, 2013 at 8:37am by Sharaun*

**chemistry**

calculate the internal energy change for each of the following. a. one hundred(100.)joules of work are required to compress a gas. at the same time the gas releases 23 J of heat. b. a piston is compressed from a volume of 8.30 L to 2.80 L against a constant pressure of 1.90 ...
*Tuesday, March 11, 2008 at 12:46pm by kathy*

**chemistry**

A sample of gas weighing 9.0 (g) at a pressure of 1 atm occupies a volume of 12.3 L. If the pressure is doubled,what is the resulting volume? (Assume constant temperature)
*Monday, October 18, 2010 at 12:22am by Dakota*

**chemistry**

A quantity of gas has a volume of 121 L when confined under a pressure of 2.50 atm at a temperature of 20.0 C. At what pressure will its volume be 30.0 L at 25.0 C?
*Friday, February 24, 2012 at 11:14am by garrett*

**Chemistry**

A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)?
*Thursday, November 1, 2012 at 10:01pm by Brandon*

**chemistry**

the maximum volume if Ziploc sandwich is 0.5 L at the pressure of 1 atm. use the gas law, calculate the pressure in the bag from the above volume of co2.
*Sunday, March 10, 2013 at 4:42am by mariah*

**Chemistry Help PLEASE!!**

I don't know how to do this question, I understand we have to use ICE but I keep getting the wrong answer when I solve for x, it's just not working for me. Consider the following reaction: A(g) -> 2B (g) Find the equilibrium partial pressures of A and B for each of the ...
*Friday, February 24, 2012 at 10:15pm by Student*

**chemistry**

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?
*Wednesday, November 17, 2010 at 10:05pm by Anonymous*

**Chemistry**

At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.81 atm and 0.20 atm, respectively
*Monday, February 20, 2012 at 9:11pm by Elizabeth*

**chemistry**

You have a 4.0 L steel tank containing hydrogen gas. You are able to heat or cool the tank and meaurse the pressure of the gas. 1.If the temperature is 25degree and the pressure is 3.5 aim ..How many grams of hydrogen does the tank contain. 2.at what temperatue in Celsius ...
*Sunday, April 22, 2012 at 9:50pm by cateye*

**chemistry**

A 24L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if the volume is changed to 16L?
*Tuesday, March 16, 2010 at 10:24pm by catherine*

**chemistry**

STP is 273 K and 1 atm or if you have pressure units in mm Hg you can use that without changing if you make std pressure 760 mm
*Wednesday, February 15, 2012 at 11:17pm by DrBob222*

**Chemistry**

What is the mole fraction of each component of a gas mixture that contains sulfur trioxide at a pressure of 1.45 atm and sulfur dioxide at a pressure of 0.32 atms?
*Tuesday, March 13, 2012 at 1:32pm by Hunter*

**chemistry**

A helium-ﬁlled balloon contains 143 mL of gas at a pressure of 0.99 atm. What volume will the gas occupy at standard pressure?
*Sunday, February 17, 2013 at 8:08pm by AK*

**Chemistry**

Partial pressure=(moles of Ar/total moles of gas mixture)*total pressure Partial pressure of Ar=(0.48mol/1.42mol)*1.68 atm ****Answer contains three significant figures.
*Tuesday, March 4, 2014 at 1:39am by Devron*

**One more Chem**

One more A helium balloon has a volume of 2.30 L at 23.5 deg C and a pressure of 1.00 atm at sea level. the ballon is released and floats upward. At a certain height the atmospheric pressure is 0.810 atm and the temp is 12. C. What is the volume of the balloon? ????? ??? (P1V1...
*Tuesday, July 17, 2007 at 4:23pm by Jill*

**Chemistry**

help please! At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?
*Thursday, November 18, 2010 at 12:01am by Alyssa*

**CHEMISTRY**

NEED HELP (Combined gas Law) A gas at a pressure of 1.50 atm has a volume of 200 mL. Calculate the new volume if the pressue changes to 1.20 atm. Assume constant temperature.
*Tuesday, March 19, 2013 at 9:16am by JOY*

**chemistry**

Water has an equilibrium vapor pressure of 23.8 mm Hg at 25 C. If 1.00 g H2O is sealed in a 20 L flask, what mass will remain in the liquid phase when equilibrium is established? ( 760 mmHg = 1 atm, R =0.0821 L.atm/mol.K)
*Saturday, January 22, 2011 at 4:00pm by daniel*

**Chemistry**

Consider the reaction 2H2O(g) --> 2H2(g) + O2(g) deltaH = +483.6 kJ/mol at a certain temperature. If the increase in volume is 32.7 L against an external pressure of 1.00 atm, calculate deltaU for the reaction. (1 L * atm = 101.3 J)
*Thursday, November 8, 2012 at 12:08am by Kim*

**Chemistry**

Is there an equation used to fond remaining pressure When CS2 at partial pressure 1930 torr reacts with H2 at partial pressure 8650 torr at constant volume and constant temperature according to the balanced equation, determine the partial pressure (atm) of H2 that remains. CS2...
*Sunday, April 11, 2010 at 8:25pm by Tokey*

**Chemistry**

Is there an equation used to fond remaining pressure When CS2 at partial pressure 1930 torr reacts with H2 at partial pressure 8650 torr at constant volume and constant temperature according to the balanced equation, determine the partial pressure (atm) of H2 that remains. CS2...
*Sunday, April 11, 2010 at 8:37pm by Tokey*

**chemistry**

First get the number of moles of COCl2 and the total pressure before dissociation starts. 5 g is 5/99 mol. That would occupy (5/99)(673/273)22.4 = 2.79 liter at 300C=673 K and 1 atm. Since is is confined to 1.00 l, the pressure is 2.79 atm initially. When a fraction x ...
*Monday, October 13, 2008 at 2:08am by drwls*

**chem**

A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows a pressure of 1.710 atm...
*Saturday, November 17, 2007 at 4:31pm by mel*

**chem**

A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows a pressure of 1.710 atm...
*Saturday, November 17, 2007 at 10:00pm by mel*

**chem**

A spherical glass container of unknown volume contains helium gas at 25°C and 1.950 atm. When a portion of the helium is withdrawn and adjusted to 1.00 atm at 23°C, it is found to have a volume of 1.55 cm3. The gas remaining in the first container shows a pressure of 1.710 atm...
*Saturday, November 17, 2007 at 10:03pm by mel*

**chemistry**

A gas is heated from 256 K to 287 K while its volume is increased from 20.0 L to 30.0 L by moving a large piston within a cylinder. If the original pressure was 1.16 atm, what would be the final pressure?
*Monday, March 12, 2012 at 10:20pm by jamella*

**chem**

At 36.4°C a sample of ammonia gas exerts a pressure of 6.8 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature
*Wednesday, June 29, 2011 at 12:46pm by Tim*

**Chemistry**

At 36.4°C a sample of ammonia gas exerts a pressure of 8.3 atm. What is the pressure when the volume of the gas is reduced to one-fourth of the original value at the same temperature.
*Monday, October 17, 2011 at 1:12am by Sven*

**Chemistry -need help in solving problem**

The solubility of a gas at 7.0 atm of pressure is 0.52 g/L . How many grams of the gas would be disolved per 1.0 L if the pressure increased 40 percent?
*Monday, March 4, 2013 at 12:03pm by Joy*

**Chemistry**

A pocket of gas is discovered in a deep drilling operation. The gas has a temperature of 480c and is at a pressure of 12.8 atm. What volume of gas is required to provide 18.0 L of gas at the surface where the conditions are 22 C and 1.00 atm?
*Tuesday, January 15, 2008 at 12:37am by Lauren*

**algebra**

The volume V of a gas varies inversely as the pressure P and directly as the temperature T. A certain gas has a volume of 20 L, and a temperature of 320 K, and a pressure of 1 atm. If the gas is compressed to a volume of 15 L and is heated to 330 K, what will the new pressure...
*Tuesday, January 27, 2009 at 6:36pm by bob*

**chem**

If an ideal gas is allowed to expand into a vacuum, this means that the external pressure is 0. This doesn't affect the internal pressure though, correct? For example: I have a problem in which one mole of an ideal gas at 300. K and at a volume of 10.0 L expands isothermally ...
*Tuesday, March 6, 2007 at 6:16pm by Chris*

**Chemistry**

A sample of gas (26.1 g) initially at 3.00 atm was compressed from 21.00 L to 6.00 L at constant temperature. After the compression, the gas pressure was __________ atm.
*Thursday, April 22, 2010 at 9:40am by Camarra*

**Physics**

A rigid tank having a volume of 0.100 m3 contains helium gas at 150 atm. How many balloons can be inflated by opening the valve at the top of the tank? Each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.30 atm.
*Tuesday, October 4, 2011 at 11:00pm by Jim *

**Chemistry**

A 12.7 L sample of gas is under a pressure of 740 mm Hg at 20degrees C. What will be the volume of the gas if the pressure increases to 1.00 atm and the temperature drops to 0 degrees C
*Tuesday, January 20, 2009 at 4:43pm by Mary*

**chemistry**

Do you have a Kp or Kc or equilibrium concns of anything? The 2.74 atm is correct for the pressure of PCl5 at the start but is that the pressure at equilibrium? How did you arrive at 0.9atm for PCl3 and Cl2.
*Tuesday, April 19, 2011 at 9:56pm by DrBob222*

**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*

**Chem II**

A sample of gas in a 25.0-L containter exerts a pressure of 3.20 atm. Calculate the pressure exerted by the gas if the volume is changed to 45.0-L at constant temperature.
*Friday, October 12, 2012 at 4:09pm by Layney*

**Chemistry**

Consider this molecular-level representation of a gas. 5 orange 6 green---> 3 pairs 6 blue If the partial pressure of a diatomic gas is .750 atm, what is the total pressure?
*Friday, June 21, 2013 at 7:50pm by Sarah*

**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*

**chm152**

NH4HS(s) <=> NH3(g) + H2S(g) p = partial pressure. Kp = pNH3 x pH2S Since the total pressure is 0.766 atm, and the number of moles NH3 = number of moles H2S, won't the partial pressure of each gas be just 1/2 of the total pressure? Substitute into Kp and solve. Check my ...
*Saturday, March 27, 2010 at 11:26am by DrBob222*

**Chem Question?**

No. You must convert psi (pounds per square inch) to atm. Although I'm not a bike racer, 115 psi sounds high for a pressure in a bike tire. I think there are 14.7 lbs/in^2 in 1 atm.
*Monday, May 5, 2008 at 5:32pm by DrBob222*

**chemistry**

A 10.0-L stainless steel container was charged with 2.00 atm of hydrogen gas and 3.00 atm of oxygen gas. A spark ignited the mixture, producing water. What is the pressure in the tank at a constant temperature of 25°C?
*Saturday, November 6, 2010 at 11:32pm by Anonymous*

**chem111**

If a balloon holds 2000L of Helium at sea level, at 1 atm and 25 degress Celsius, what will its volume be if it is allowed to rise to a height og 8 miles, where the pressure is 0.30 atm and the temperature is -70 degress Celsius.
*Wednesday, November 6, 2013 at 2:57pm by merc*

**Thermodynamics**

Hmm. An isothermal expansion. The pressure must fall by a factor of 5 during this process. The initial pressure is P1 = n R T = (5 moles/liter)*0.08206 Liter atm/mole K)* 667 K = 274 atm = 2.77*10^7 N/m^2 P2, the final pressure, is 1/5 of P1 The work done is the integral of P ...
*Thursday, December 4, 2008 at 6:05am by drwls*

**chemistry**

I am trying to find pressure. R=.0821 T=1273 K V=2 n=.0997 When I put .0997 in the PV=nRT equation I get 5.2 atm, and when I put in .09 I get 4.7 atm. Which answer should I put? Which is more accurate?
*Wednesday, December 3, 2008 at 11:36pm by Jordan*

**chemistry**

a 0.25 mol sample af neon gas at 18 C and 0.700 atm is heated to 40 C. the new gas pressure is 1.11 atm. what is the change in volumn of the neon gas?
*Monday, February 4, 2013 at 4:38pm by james*

**A.P Chemistry**

D. 2NO + O2 -> 2NO2 E. since only half of the moles of O2 will be consumed in the reaction there will be .176 mol NO2 and .088 mol O2 so... PNO2 = .176mol(.08296)(298K)/5L = .8608 atm PO2 = .088mol(.08206)(298K)/5L = .4304 atm PNO2 + PO2 = Total Pressure = 1.2912 atm
*Sunday, October 22, 2006 at 11:53pm by Tom*

**ap chemistry **

A sample of gas in a cylinder of volume 4.2 L at 316 K and 2.68 atm expands to 7.21 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Answer in units of J Path B has two steps. In the first step, the gas is cooled at ...
*Monday, October 8, 2012 at 1:25am by hanna*

**Chemistry/Equilibrium calculations**

Hi! Thank you so much for your answer! according to my calculations...I got: 1 bar = 750 mm Hg = 0.986 atm. At constant T and P, volume and moles are proportional, so volume percent = mole %. Pa = (xa)(Pt) , , ,the partial pressure of "a" is equal to the mole fraction of "a" ...
*Saturday, August 16, 2008 at 7:59am by Mary*

**Chemistry/Equilibrium calculations**

Hi! Thank you so much for your answer! according to my calculations...I got: 1 bar = 750 mm Hg = 0.986 atm. At constant T and P, volume and moles are proportional, so volume percent = mole %. Pa = (xa)(Pt) , , ,the partial pressure of "a" is equal to the mole fraction of "a" ...
*Saturday, August 16, 2008 at 12:00pm by Mary*

**Physical Chemistry1**

One mole of an ideal monatomic gas at 300 K and 1 atm is compressed adiabatically by application of a constant external pressure of 25 atm until mechanical equiliibrium is achieved. Calculate the final temperature of the gas, as well as q, w, deltaU and deltaH for this process.
*Monday, September 29, 2008 at 3:58pm by Amber*

**chemistry**

Anyone can guess in the ranking. How did you arrive at this ranking? Change the units to the same overall unit--it doesn't matter what you pick but I think atm would be the easiest. Then X = (partial pressure/total pressure)
*Thursday, April 29, 2010 at 7:31pm by DrBob222*

**college physics**

If 61.9 L of oxygen at 17.7 degrees C and an absolute pressure of 1.55 atm are compressed to 46.4 L and at the same time the temperature is raised to 49.3 degrees C, what will the new pressure be?
*Sunday, May 2, 2010 at 10:45am by Anonymous*

**Chemistry 105**

A sample of nitrogen gas in a 1.86-L container exerts a pressure of 1.32 atm at 20 C. What is the pressure if the volume of the container is maintained constant and the temperature is raised to 354 C?
*Sunday, October 23, 2011 at 5:30pm by JULIE*

**chem**

If the pressure of the gas in a 2.31 L balloon is 0.120 atm and the volume increases to 7.14 L, what will be the final pressure of the air within the balloon? Round to the nearest hundredth. Don't forget the units.
*Friday, May 10, 2013 at 9:05am by vonsha*

**chemistry help!!!!!**

Consider the following reaction: Find the equilibrium partial pressures of A and B for each of the following different values of Kp. Assume that the initial partial pressure of B in each case is 1.0 atm, and that the initial partial pressure of A is 0.0 atm. Make any ...
*Sunday, March 11, 2012 at 9:57pm by student*

**chemistry**

A sample of an ideal gas at 15.0 atm and 10.0 L is allowed to expand against a constant externam pressure of 2.00 atm at a constant temperature. Calculate the work in KJ for the gas expansion (Boyle's law applies)
*Saturday, October 9, 2010 at 6:19pm by alexie*

**chemistry**

Π = iMRT where Π = osmotic pressure in atm i = van 't Hoff factor of the solute. ((Broken Link Removed) M = molar concentration in mol/L R = universal gas constant = 0.08206 L·atm/mol·K T = absolute temperature in K
*Saturday, October 29, 2011 at 1:50pm by TutorCat*

**physics **

The pressure in a fire hose is 20 atm. How high can a firefighter spray water from this hose? One atm is about 1×105 Pa. The density of water is 1.0 g/ml, or 103 kg/m3. The acceleration of gravity, g, is 9.8 m/s2.
*Tuesday, November 13, 2012 at 2:12pm by matt*

**chemistry**

A sample of an ideal gas at 1.00 atm and a volume of 1.31L was placed in a weighted balloon and dropped into the ocean. As the pressure had increased to 45.0 atm, what was the volume of the sample? Assume that the temperature was held constant.
*Sunday, July 28, 2013 at 11:57pm by rena*

**Chemistry**

Having some confusion with this question....I have the answers, just not able to reach them. A flask of volume 5L is evacuated and 43.8 g of solid N2O4 is introduced at 77K. The sample is then warmed to 298K during which the N2O4 vaporizes and some dissociates to form brown ...
*Saturday, April 24, 2010 at 5:09pm by Val*

**physics**

In isothermal expansions, the product P*V = a constant. Therefore P2/P1 = V1/V2 = 50/200 = 1/4 Since you were not told the initial pressure P1, you will have to use the perfect gas law and the information given. 0.11 moles at STP (1 atm and 273K) occupies 0.11*22.4 = 2.46 ...
*Monday, April 5, 2010 at 1:23pm by drwls*

**chemistry**

Most natural gas consists of about 90% methane, CH4. Assume that the solubility of natural gas at 20 C and 1 atm gas pressure is about the same as that of CH4, 0.02 g/kg water. If a sample of natural gas under a pressure of 20 atm is kept in contact with 1.00 *10^3 kg of water...
*Monday, March 8, 2010 at 1:54am by david*

**Chemistry: Partial Pressure**

A mixture of 0.166 moles of C is reacted with 0.117 moles of O2 in a sealed, 10 L vessel at 500 K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO? Please provide a step by step explanation with the answer so I can ...
*Thursday, October 18, 2012 at 10:07pm by M*

**chemistry**

(1) assuming the gas is ideal, the volume becomes 1/3 of the original. (2) recall that STP, pressure is at 1 atm. assuming the gas is ideal, P1*V1 = P2*V2 where P1 = initial pressure V1 = initial volume P2 = final pressure V2 = final volume substituting, 1*2000 = (P2)*15 P2 = ...
*Saturday, May 21, 2011 at 7:05pm by Jai*

**Chemistry **

Using the van der Waals equation, determine the pressure of 436.0g of SO2(g) in a 7.30-L vessel at 725k.? For SO2(g), a=6.865L^2•atm/mol^2 and b=0.05679L/mol. (R=0.0821L•atm/(K•mol))
*Monday, March 5, 2012 at 5:23pm by Cynthia *

**ap chemistry**

I would use (P1V1/T1) = (P2V2/T2) where P2V2 and T2 are standard conditions. Solve for He pressure at the P2, V2, and T2 conditions. That will give you partial pressure He. Isn't the partial pressure of N2 just 1 atm or 760 torr?
*Monday, November 22, 2010 at 2:40pm by DrBob222*

**Chem Help!**

I really need help with this question for my chem H.W. 1) On a summer day in Breckenridge, Colorado, the atmospheric pressure is 525 mm Hg. What is this air pressure in atmospheres? (round to the hundredths place) atm
*Thursday, April 10, 2008 at 12:34pm by Lisa*

**Chem B**

The air in a dry, sealed 2L soda bottle has a pressure of 0.998 atm at sea level at a temperature of 34C. what will be it's pressure, if it is brought to higher altitude where the temperature is only 23C?
*Monday, April 5, 2010 at 8:47pm by Courtney*

**chemistry**

calculate the pressure in atm of a balloon filled with 7.5g of helium gas if the baloons volume decreases to 7.5L suppose the balloons pressure and volume are originally 799 mmHg and 15L
*Tuesday, May 4, 2010 at 8:25pm by Quentin*

**Chemistry**

A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)? I did this but got a negative number that wasnt correct
*Thursday, November 1, 2012 at 11:14pm by Brandon*

**chemistry**

A 12 g sample of Ne is added to a container that also holds .78 mol of helium gas. What is the partial pressure of helium if the total pressure, after mixing is 2.43 atm?
*Friday, March 1, 2013 at 7:09pm by john*

**Chemistry**

You have a metal tank containing 74.0 moles of nitrogen gas at a pressure of 15.0 atm. If the pressure is measured at a temperature of 25.0 °C, then the volume of the tank must be ___ liters
*Wednesday, October 23, 2013 at 11:48pm by Daud*

**physics**

Consider the low-speed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? Note: 1 atm = 101325 N/m^2. Hint: Use ideal gas law!
*Sunday, March 4, 2012 at 8:04pm by oris*

**AVSC**

Consider the low-speed flight of the Space Shuttle as it is nearing a landing. If the air pressure and temperature of the shuttle are 1.2 atm and 300 K, respectively, what is the air density? Note: 1 atm = 101325 N/m^2. Hint: Use ideal gas law!
*Monday, March 5, 2012 at 12:45pm by Terri*

**Math, Physics**

The pressure in a fire hose is 20 atm. How high can a firefighter spray water from this hose? One atm is about 1×105 Pa. The density of water is 1.0 g/ml, or 103 kg/m3. The acceleration of gravity, g, is 9.8 m/s2.
*Tuesday, November 13, 2012 at 2:29pm by Willie*

**physics**

A hypodermic syringe contains a medicine with the density of water (figure below). The barrel of the syringe has a cross-sectional area of 2.44 10-5 m2. In the absence of a force on the plunger, the pressure everywhere is 1.00 atm. A force vector F of magnitude 1.91 N is ...
*Wednesday, March 28, 2012 at 10:29pm by greg*

**Chemistry**

A 7.30-L container holds a mixture of two gases at 45 °C. The partial pressures of gas A and gas B, respectively, are 0.342 atm and 0.527 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
*Wednesday, October 31, 2012 at 8:28pm by Garcia*

**chemistry**

A 8.90-L container holds a mixture of two gases at 45 C. The partial pressures of gas A and gas B, respectively, are .294 atm and .860 atm. If .100 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?
*Friday, June 21, 2013 at 4:36pm by Annie*

**Chemistry**

A 9.00-L container holds a mixture of two gases at 43 °C. The partial pressures of gas A and gas B, respectively, are 0.257 atm and 0.579 atm. If 0.110 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
*Tuesday, October 15, 2013 at 9:41pm by Kara*

**chem**

A 9.80-L container holds a mixture of two gases at 39 °C. The partial pressures of gas A and gas B, respectively, are 0.426 atm and 0.832 atm. If 0.250 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
*Sunday, December 1, 2013 at 12:25am by dinah*

**chem**

8.10-L container holds a mixture of two gases at 45 °C. The partial pressures of gas A and gas B, respectively, are 0.153 atm and 0.882 atm. If 0.110 mol a third gas is added with no change in volume or temperature, what will the total pressure become?
*Sunday, December 1, 2013 at 9:28pm by dinah*

**college**

A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mm Hg and the partial pressure of the oxygen is 1.02 atm, what is the total pressure of the mixture in torr?
*Saturday, November 13, 2010 at 9:55am by malik*

**ASAP help CHEMISTRY**

A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane in the mixture is 334 mmHg and the partial pressure of the oxygen is 1.02 atm, what is the total pressure of the mixture in torr?
*Wednesday, December 19, 2012 at 10:09pm by Lisa*

**Chem**

At 58.8 degrees C and at a total pressure of 1.00 atm the mole percent of acetone in the vapor state above a solution of acetone and water containing 70. mol % acetone is 87.5%. Assuming the solution to obey Raoult's Law, determine the vapor pressure of pure water at this ...
*Tuesday, March 27, 2007 at 8:32pm by Chris*

**chemistry**

In which one of the following processes is ΔH = ΔE? a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of ammonia gas are cooled from 325°C to 300°C at 1.2 atm. c. H2O(l) → H2O(g) at 100°C at atmospheric pressure. d. CaCO3(s) → CaO(s...
*Saturday, August 15, 2009 at 10:17am by seth*

**Chemistry**

Convert 1.02 atm to torr. 760 torr = 1 atm. 334 mm Hg = 334 torr. Add the two (in torr) to find total pressure.
*Saturday, October 30, 2010 at 4:01pm by DrBob222*

**chemistry**

(P1V1/T1) = (P2V2/T2) You know standard pressure in kPa is 101.325. Or you may use atomospheres and use 1 atm for P2 (standard) and convert 342 kPa to atm.
*Tuesday, January 11, 2011 at 7:12pm by DrBob222*

**Chem H.W. Help!**

If You transfer a sample of a gas at 17 °C from a volume of 5.67 L and 1.10 atm to a container at 37 °C that has a pressure of 1.10 atm. What is the new volume of the gas?
*Monday, May 5, 2008 at 7:04pm by Lisa*

**calculus**

At a temperature of 20°C, the volume V (in liters) of 1.33 g of O2 is related to its pressure p (in atmospheres) by the formula V(p) = 1/p (a) What is the average rate of change of V with respect to p as p increases from p = 7 to p = 8? L/atm (b) What is the rate of change to ...
*Friday, February 4, 2011 at 12:42pm by Anonymous*

**Math**

At a temperature of 20°C, the volume V (in liters) of 1.33 g of O2 is related to its pressure p (in atmospheres) by the formula V(p) = 1/p (a) What is the average rate of change of V with respect to p as p increases from p = 7 to p = 8? L/atm (b) What is the rate of change to ...
*Friday, February 4, 2011 at 4:03pm by Anonymous*

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