Saturday

April 19, 2014

April 19, 2014

Number of results: 31,238

**chemistry**

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 70. cm3. If the combustion of this mixture releases 885 J of energy, to what volume will the gases expand against a constant pressure of 645 torr if all the energy of combustion is...
*Monday, October 22, 2012 at 8:29pm by Brandon*

**Chemical Engineering**

The pressure is constant, and so the heat at constant pressure is qp = - dH vaporization. W=-pdV and so since p=pext=1atm and dV = (vf - vi) = vliquid - vvapor, we'll say that since the volume of the vapor is significantly greater than that of the liquid, then vf-vi is ...
*Thursday, February 5, 2009 at 12:01am by Alex*

**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*

**Physics**

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
*Wednesday, April 11, 2012 at 10:46am by Madison*

**phy**

Some air at 275 kPa absolute pressure occupies 50.0m^3. Find its absolute pressure if its volume is doubled at constant temperature.
*Wednesday, April 11, 2012 at 12:56pm by Ricky*

**chemistry **

A sample of oxygen occupies 1.00 L. If the temperature remains constant and the pressure on oxygen is decreased to one-third the orginal pressure, what is the new volume?
*Monday, November 26, 2012 at 3:07pm by Anonymous*

**thermodynamics**

Assuming that no heat enters or leaves the gas, and that it expands by pushing against an external gas, or a moving wall or piston, then there is no entropy change in any case. If there is a "free expansion" into a larger volume with no heat addition, and no work done against ...
*Monday, January 23, 2012 at 3:33am by drwls*

**College Chemistry**

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 50. cm3. If the combustion of this mixture releases 955 J of energy, to what volume will the gases expand against a constant pressure of 675 torr if all the energy of combustion is...
*Monday, October 31, 2011 at 3:16pm by Amanda*

**physics **

A spring (spring 1) with a spring constant of 520N/m is attached to a wall and connected to another weaker spring (spring 2) with a spring constant of 270N/m on a horizontal surface. Then an external force of 70N is applied to the end of the weaker spring (#2). how much ...
*Saturday, June 29, 2013 at 12:36pm by victoria*

**calculus**

Boyle's law states that if the temperature of a gas remains constant, then PV = c. Where P is the pressure, V is the volume, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 13 in.^3/s, at what rate is P increasing when P = ...
*Sunday, May 2, 2010 at 11:38pm by Hussain*

**physical**

Is this Boyle's law? P1V1=P2V2 or P2V2=P1V1=constant So figure out the constant (P1V1) then P2=constant/V2=3.6/1.5 Now that is the actual pressure. Your question asks what will be change P. I dont know what that means. Change is normally P2-P1, but for the life of me I dont ...
*Sunday, January 16, 2011 at 10:17am by bobpursley*

**Science**

Pressure is force distributed over an area. It is measured in force per area. In the case of pressure, the force is a push against the area, not a pull.
*Tuesday, January 8, 2008 at 7:55pm by drwls*

**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**

When solid CO2 (dry ice) is allowed to come to equilibrium in a closed constant volume container at room temperature (300K), 1. the pressure rises until it reaches 1 atm 2. the pressure rises until a liquid-gas equilibrium is reached. 3. the pressure does not change. 4. the ...
*Monday, January 31, 2011 at 12:58am by Douglas*

**physics**

a 10.0 cm cylindrical chamber has a 5.0cm diameter piston attached to one end. The piston is connected to an ideal spring with a spring constant of 10.0N/cm. Initially, the spring is not compressed but is latched in place so that it cannot move. When the cylinder is filled ...
*Thursday, November 22, 2012 at 9:31am by Jenny*

**physics**

external: outside the particle. If your briefcase is lifted, and external force is the lifting agent.
*Tuesday, April 20, 2010 at 3:05am by bobpursley*

**Physics**

Resonance in a system, such as a string fixed at both ends, occurs when a) it is oscillating in simpler harmonic motion b) its frequency is the same as the frequency of an external source c) its frequency is greater than the frequency of an external source d) its frequency is ...
*Sunday, December 6, 2009 at 6:14pm by Satej*

**Chemistry**

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 30. cm3. If the combustion of this mixture releases 980. J of energy, to what volume will the gases expand against a constant pressure of 640. torr if all the energy of combustion ...
*Thursday, November 18, 2010 at 3:45pm by Mattie*

**physics**

(a) V = (Volume flow rate)/(faucet area) =25*10^3 cm^3/(30 s* pi cm^2)= 265 cm/s = 2.7 m/s Correct (b) The pressure is ambient (Po) at the faucet exit, where the water is flowing. Use this form of the Bernolli equation: P + (1/2) rho V^2 + rho*g y = constant Let Po be ambient ...
*Wednesday, December 19, 2007 at 12:15am by drwls*

**chem**

If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units.
*Friday, May 10, 2013 at 9:02am by nene *

**chem :(**

If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units.
*Friday, May 10, 2013 at 9:06am by nene*

**Chemistry**

A sample of Argon gas at standard pressure occupies 1000 mL. At constant temperature, what volume does the gas occupy if the pressure increases to 800 mm Hg?
*Sunday, November 13, 2011 at 9:10pm by Jessie*

**science**

This graph represents the relationship of the pressure and volume of a given mass of a gas at constant temperature. When the pressure equals 8 millimeters of mercury (mmHg), what is the volume, in milliliters (mL)?
*Wednesday, February 8, 2012 at 10:21pm by Anonymous*

**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 3A**

a sample of nitrogen gas, N2 occupies 3.0L at a pressure of 3.0 atm. what volume will it occupy when the pressure is changed to 0.50 atm and the temperature remains constant?
*Monday, December 3, 2012 at 12:10am by Gurjot *

**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*

**chem**

The 3 atm (partial pressure) of H2 will combine with 1.5 atm (partial pressure) of O2 to produce 3 atm (partial pressure) of H2O, with 2.5 atm (partial pressure) of O2 left over. Thus 7 atm of reactants produces 5.5 atm of products + unreacted O2. I am assuming that the inital...
*Friday, November 16, 2007 at 1:29pm by drwls*

**Physical Chemistry**

Calculate DS if the temperature of 3 moles of an ideal gas with Cv,m = 1.5R is increased from 200 K to 500 K under conditions of (a) constant pressure and (b) constant volume.
*Friday, November 30, 2012 at 8:43pm by Lawrence*

**math**

If those are the external measures of the box, it will fit in neither. At 6.5 inches (external) the width (internal) will < 6.5.
*Monday, January 14, 2013 at 10:11pm by PsyDAG*

**chemistry help plz**

Le chatelier's principle? co(g)+cl2(g)=cocl2(g)is reversible and ,after a certain amount of time ,will reach equilibrium.Explain,using Le chatelier's principle,what effect: 1)increasing the pressure (at constant temperature) 2)increasing the temperature (at constant pressure) ...
*Saturday, January 5, 2013 at 4:49pm by centya*

**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*

**Chemistry.**

To calculate the air pressure, the volume occupied by the air is assumed constant. Why is this assumption incorrect? Explain how the vapor pressure calculated and the resulting Clausius-Clapeyron plot are affected?
*Tuesday, October 16, 2012 at 12:03am by Shardae.*

**Chemistry.**

To calculate the air pressure, the volume occupied by the air is assumed constant. Why is this assumption incorrect? Explain how the vapor pressure calculated and the resulting Clausius-Clapeyron plot are affected?
*Tuesday, October 16, 2012 at 12:12am by Shardae.*

**Science**

Consider the following reaction: 2Na + Cl2 2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an enthalpy ...
*Tuesday, August 3, 2010 at 11:17pm by Joseph*

**AP Chem**

For the following equilibrium system, which of the following changes will form more CaCO3? CO2(g) + Ca(OH)2(s) <--> CaCO3(s) + H2O(l) deltaH(rxn) = -113 kJ My choices are: a) Decrease temperature at a constant pressure (no phase change) B) Increase volume at a constant ...
*Tuesday, February 26, 2013 at 1:31pm by Lisa*

**chemistry**

what if the question doesnt say that the temperature and pressure stay constant. for example..3.0L of a gas has a pressure of 12.0 atm. What is the new pressure if the gas is expanded to 17.0L?....would you assume that the temperature would stay the same or is there another ...
*Thursday, February 4, 2010 at 9:15pm by lelia*

**chemistry**

11.31) solve for the new pressure when each of the following temperature changes occurs, with n and V constant: a. a gas sample has a pressure of 1200 torr at 155 celcius. what is the final pressure of the gas after the temperature has droped to 0 celcius? 1200 x12 celcius/0 ...
*Sunday, June 27, 2010 at 12:21am by Jetta*

**Chemistry**

"Under constant conditions of P(pressure) and T(temperature) (and R [gas constant]), write an equation showing d(density) written as a function of M(molecular mass)." I don't understand this, really! Please help! Thanks in advance!
*Sunday, January 13, 2008 at 9:13pm by TAG*

**Gen Chem 1**

We want to change the volume of a fixed amount of gas from 745mL to 2.30L while holding the temperature constant. To what value must we change the pressure if the initial pressure is 102 kPa?
*Tuesday, October 26, 2010 at 2:08pm by Kay*

**Chemistry**

How would applying an external pressure on the following equilibrium affects the distribution of iodide between the polar (aqueous) and non polar (varsol)
*Sunday, March 2, 2014 at 12:29pm by Sarah *

**chemistry**

How would applying an external pressure on the following equilibrium affects the distribution of iodide between the polar (aqueous) and non polar (varsol)
*Monday, March 3, 2014 at 7:56pm by Scarlett*

**Chemistry**

Which statement about Kc is wrong? A. Kc is always a constant B. For some reactions, Kc increases with temperature increase C. For some reactions, Kc decreases with temperature decrease D. For some reactions, Kc changes when pressure is changed A is incorrect. Kc stays ...
*Wednesday, January 31, 2007 at 12:40pm by Joe*

**Physics**

You fill your tires with air on a cold morning (-5degreesC) to 220-kPa gauge pressure, then drive into a 32degreesC desert. (a) Assuming the volume of air in the tires remains constant, what's the new gauge pressure? (b) what would be the gauge pressure if the volume of air ...
*Tuesday, January 24, 2012 at 10:18pm by Haylee*

**Physics**

According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch). If the volume of gas is increased to 400 cubic meters, the ...
*Friday, May 25, 2012 at 3:11am by Pat*

**physics**

The Boyle's Law states that PV/T = k where k is a constant so, assuming a constant pressure V/T does not change 2.2/(291.15) = V/(311.15) V = 2.35 L
*Friday, December 2, 2011 at 11:39am by Steve*

**Chem**

At 850 C, the equilibrium constant Kp for the reaction: C(s)+CO2(g) >< 2CO(g) has a value of 10.7. If the total pressure in the system at equilibrium is 1.000 atm, what is the partial pressure of carbon monoxide.
*Wednesday, April 22, 2009 at 2:01pm by Noemi*

**Chemistry**

A sample of air occupies 3.8 L when the pressure is 1.2 atm. (a) What volume does it occupy at 7.3 atm? (b) What pressure is required in order to compress it to 0.050 L? (The temperature is kept constant.) I already know the answers to each question, but do not understand how ...
*Monday, March 14, 2011 at 4:54pm by Alex*

**Chemistry**

Hey i have an idea how to do this but am not sure could you please help and show work. 12 moles of a gas sample at an initial temperature of 12 degrees celcius at a pressure of 200 Pa is allowed to expand isothermally and reversibly against a pressure of 50 kPa. Calculate the ...
*Friday, January 18, 2013 at 4:11am by Dermot*

**Science**

PRessure is measured in Pascals (Pa). What combination of units is the same as a Pascal? and When you exert a force on a fluid in a closed container, does the pressure increase, decrease or remain constant? I think it will increase, but I'm not totally sure.
*Monday, May 30, 2011 at 8:00pm by Erika*

**physics**

What is the total force on the bottom of a swimming pool 22.0 m by 8.9 m whose uniform depth is 1.6 m? What is the absolute pressure on the bottom of a swimming pool? What will be the pressure against the side of the pool near the bottom?
*Tuesday, November 16, 2010 at 9:46pm by Cory*

**chemistry 106**

Calculate the work done if a gas is compressed from 8.3 L to 3.3 L at constant temperature by a constant pressure of 3.0 atm, and give your answer in units of joules. (1 L · atm = 101.3 J)
*Wednesday, March 3, 2010 at 6:33pm by Tanisha *

**pressure**

What you are calling the "liquid pressure" must be the pressure due to liquid above, which is also called the gauge pressure. It equals (density)*g*(depth) = 1000 kg/m^3*9.8*4.0 m = 3.92*10^4 Pa = 39.2 kPa Add atmospheric pressure to that for the absolute pressure, 140.2 kPa.
*Friday, March 30, 2012 at 8:39am by drwls*

**Chemistry**

a has been answered by Bob Pursley below. Keq is the equilibrium constant. If you make a distinction, Kc is the concentration equilibrium constant while Kp is the partial pressure equilibrium constant. If I see a problem where K is listed I always assume it is Kc but that ...
*Monday, December 2, 2013 at 3:34pm by DrBob222*

**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*

**Chemsitry II**

The partial pressure of CH4(g) is 0.185 atm and that of O2(g) is 0.300 atm in a mixture of the two gases. a) What is the mole fraction of each gas in the mixture? b) If the mixture occupies a volume of 11.5 L at 65 degress C, calculate the total number of moles of gas in the ...
*Thursday, May 10, 2007 at 7:13pm by Jayd*

**Chemistry**

The dry gas pressure is pressure inside the tube - watervapor pressure. The pressure has nothing to do with the volume collected, unless you are supporting a column of water, then you have to adjust barometric pressure for the height of the column, it does not appear you had ...
*Wednesday, September 26, 2007 at 1:21pm by bobpursley*

**compressor operations**

We are operating a centrifugal compressor. The gas composition does not change during this excursion. While holding suction pressure and flowrate constant, the inlet temperature rises. What would you expect to happen to the discharge pressure, and why
*Wednesday, January 29, 2014 at 11:12pm by Tony*

**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 480torr ?
*Monday, April 7, 2014 at 12:02am by Connor*

**vapor and osmotic pressure**

A solution of the sugar mannitol ( molar mass 182.2 g/mol ) is prepared by adding 54.66 g of mannitol to 1.000 kg of water. The vapor pressure of pure liquid water is 17.54 torr at 20o C. Mannitol is nonvolatile and does not ionize in aqueous solution. a.) Assuming that ...
*Thursday, October 12, 2006 at 3:03am by Amy*

**Chemistry**

The pressure of a gas is 35 atm at a temperature of 48 (degrees) C with constant volume. What will the new pressure be if the temperature is increased to 36 (degrees) C?
*Friday, July 23, 2010 at 12:34am by bob*

**Chemistry**

The pressure of a gas is 35 atmospheres at a temperature of 48 (degrees) C with constant volume. What will the new pressure be if the temperature is increased to 36 (degrees) C?
*Wednesday, May 9, 2012 at 5:55pm by bob*

**chemistry**

a gas has a volume of 95 mL at a pressure of 930 torr. What volume will the gas occupy at standard temperature if pressure is held constant?
*Sunday, January 26, 2014 at 3:48pm by Mikhail*

**chemistry**

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
*Tuesday, July 29, 2008 at 2:11pm by natasha*

**chemistry**

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
*Monday, August 4, 2008 at 11:21am by kayla*

**CHEMISTRY**

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
*Tuesday, August 12, 2008 at 4:54pm by natasha*

**Chemistry 105**

A sample of gas has an initial volume of 33.0 L at a pressure of 1.1 atm. If the sample is compressed to a volume of 10.0 L, what will its pressure be? (Assume constant temperature.)
*Sunday, October 23, 2011 at 5:24pm by JULIE*

**chem**

At 119 degrees C, the pressure of a sample of nitrogen is 1.94 atm. What will the pressure be at 282 degrees C, assuming constant volume? Answer in units of atm
*Thursday, April 19, 2012 at 12:01am by luke*

**Chemistry**

The volume of a gas is 250 mL at 340.0 kPa pressure. What will the volume be when the pressure is reduced to 50.0 kPa, assuming the temperature remains constant?
*Sunday, May 6, 2012 at 10:48pm by George*

**chemistry**

the volume of a gas is 250 mL at 350 kPa pressure. what will the volume be when the pressure is reduced to 50 kPa, assuming the temperature remains constant?
*Wednesday, May 30, 2012 at 12:41pm by jose*

**chemistry**

t 103 ◦ C, the pressure of a sample of nitrogen is 1 . 89 atm. What will the pressure be at 275 ◦ C, assuming constant volume? Answer in units of atm
*Thursday, April 4, 2013 at 8:44pm by Kyle*

**Chemistry**

At 103◦C, the pressure of a sample of nitrogen is 1.89 atm. What will the pressure be at 275◦C, assuming constant volume? Answer in units of atm
*Thursday, April 4, 2013 at 8:49pm by Kyle*

**chem word problem**

.If a gas is cooled from 323.0 K to 273.15 K and the volume is kept constant, what final pressure would result if the original pressure was 750.0 mm Hg? Round to the nearest tenth. Don't forget the units. what should i plug in?
*Thursday, May 23, 2013 at 9:46am by ray*

**chemistry**

The volume of a gas is 250 mL at 340.0 kPa pressure. With the temperature remaining constant, what will the volume be when the pressure is reduced to 50.0 kPa? Don't forget the units.
*Monday, June 11, 2012 at 5:08pm by dimo*

**pressure**

an ideal gas in a sealed container has an initial volume of 2.70L. at constant pressure, it is cooled to 25.00 C where its final volume is 1.75L. what was the initial temperature?
*Wednesday, September 18, 2013 at 6:13pm by Anonymous*

**science**

The gas in a cylinder with a piston has a volume of 2.4 m3 and a pressure of 120 kpa/ keeping the tempture constant the pressure is changed to 240 kpa. what is the new volume?
*Thursday, October 3, 2013 at 7:33pm by Trisha G.*

**chem**

A sample of gas has an initial volume of 32.6L at a pressure of 1.2atm.If the sample is compressed to a volume of 13.4L , what will its pressure be? (Assume constant temperature.)
*Monday, October 7, 2013 at 4:11pm by kristine*

**Chemistry**

A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?
*Tuesday, November 30, 2010 at 7:45pm by Kiesha*

**Chemistry**

A 120. mL sample of a gas is at a pressure of 1.50 atm. If the temperature remains constant, what will be its volume at 3.50 atm of pressure?
*Monday, December 6, 2010 at 5:26pm by Ivy*

**Physics help!!**

A crate is pulled to the right with a force of 80 N, to the left with a force of 125.8 N, upward with a force of 615.4 N, and downward with a force of 248 N. Net external force in the x direction: -45.8 Net external force in the y direction: 367.4 N how do i find the magnitude...
*Friday, November 11, 2011 at 1:29am by Elle*

**Chem**

The relationship between volume and pressure (at constant temperature) is directly proportional. my answer- True The relationship between pressure and temperature (at constant volume) is inversely proportional. my answer- True The relationship between volume and temperature (...
*Sunday, October 17, 2010 at 9:44pm by chris*

**college**

One mole of oxygen gas is at a pressure of 5.10 atm and a temperature of 32.0°C. (a) If the gas is heated at constant volume until the pressure triples, what is the final temperature?
*Wednesday, February 24, 2010 at 1:28am by Anonymous*

**Chemistry**

At a temperature of 30.°C, a gas inside a 1.50 L metal canister has a pressure of 760 torr. If the temperature is increased to 55°C (at constant volume), what is the new pressure of the gas?
*Tuesday, February 21, 2012 at 3:46pm by Kyle2*

**Chemistry**

At a temperature of 57oC, a gas inside a 5.30 L metal canister has a pressure of 4000 torr. If the temperature is decreased to 13oC (at constant volume), what is the new pressure of the gas?
*Wednesday, February 26, 2014 at 3:03pm by Chelsey*

**Physics**

Use the equation Pfluid=Density x height x gravity (1000)(1.9)(9.8)=18,620 The TOTAL absolute pressure on the bottom and against the sides of the swimming pool is 18,620 + 1.01x10^5 = 119,620 Pa Use the equation Pressure = Force/Area Rearrange the equation to Force = Pressure ...
*Saturday, November 3, 2012 at 12:03pm by Andy*

**Chemistry 3A**

the pressure of hydrogen gas in a constant volume cylinder is 4.25atm at 0 degrees celsius. what will the pressure be if the temp. is raised to 80 degress celsius? Also do we have to first convert celsius to kelvin?
*Tuesday, December 4, 2012 at 11:56am by Gurjot *

**Physics (12th Grade)**

If it is heated at constant pressure, the volume must increase heat in = change in internal energy + work out dQ = dU + dW P V = n R T constant pressure P dV = n R dT = work out Change in internal energy = n Cv dT = n(5/2)R dT for diatomic gas total heat required = n R dT + (5...
*Monday, April 9, 2012 at 12:49am by Damon*

**Chemistry**

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
*Thursday, March 31, 2011 at 9:44pm by Aubrey*

**Chemistry**

A quantity of gas under a pressure of 302 kPa has a volume of 600. cm3. The pressure is increased to 545 kPa, while the temperature is kept constant. What is the new volume?
*Thursday, March 31, 2011 at 9:45pm by Aubrey*

**chemistry**

A 300 mL sample of hydrogen gas is at a pressure of 0.500 kPa. If the pressure increases to 0.750 kPa, what will be the final volume of the sample? Assume that the temperature stays constant
*Monday, February 13, 2012 at 9:08pm by Kristyn*

**chemistry**

A 300 mL sample of hydrogen gas is at a pressure of 0.500 kPa. If the pressure increases to 0.750 kPa, what will be the final volume of the sample? Assume that the temperature stays constant
*Monday, February 13, 2012 at 9:09pm by Kristyn*

**Chemistry**

A sample of methane gas at room temperature has a pressure of 1.50 atm and a volumne of 10.5 L. If the temperature is kept constant, what will be the new volume if the pressure is increased to 2.00 atm?
*Sunday, June 3, 2012 at 9:36pm by Mary*

**Chemistry**

A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
*Tuesday, May 7, 2013 at 8:11pm by Logan*

**Chemistry**

A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
*Tuesday, May 7, 2013 at 9:27pm by Logan*

**Chemistry**

At 125 degrees Celsius, the pressure of a sample of He gas is 345 mmHg. At what temperature degrees Celsius will the pressure become 690 mm Hg, if the volume remains constant?
*Sunday, July 28, 2013 at 4:27pm by Hanna*

**Physics..**

A container of gas is at a pressure of 1.3x10^5 Pa and a volume of 6.0m^3. How much work is done by the gas if it expands at constant pressure to twice its initial volume? Please help me I really dont know what to do,,,
*Wednesday, December 11, 2013 at 12:00pm by cheesecake:)*

**Physics**

4) A 10 cm cylinder chamber has a 5cm diameter piston attached to one end. The piston is connected to an ideal spring with a spring constant of 10N/cm. Initially the spring is not compressed but is latched in place so that it cannot move. The cylinder is filled with a gas to a...
*Thursday, December 20, 2012 at 12:04am by P Vijay Kumar*

**chemistry**

Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 degrees C. At what temperature does benzene boil when the external pressure is 470 torr?
*Sunday, September 7, 2008 at 1:34pm by Erin*

**science**

benzene has a heat of vaporization of 30.72kj/mol and a normal boiling point of 80.1c. at what temperature does benzene boil when the external pressure is 445 torr
*Wednesday, December 2, 2009 at 12:00pm by Bryan*

**problem**

Benzene has a heat of vaporization of 30.72 kj/mol and a normal boiling point of 80.1. At what temperature does benzene boil when the external pressure is 480 torr?
*Sunday, July 17, 2011 at 10:37pm by Anonymous*

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