Thursday

October 2, 2014

October 2, 2014

Number of results: 7,927

**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)
*March 3, 2010 by Tanisha *

**Chemistry**

The pressure exerted on a 240.0 mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What will the final volume of the sample be?
*March 6, 2011 by NDC*

**chemistry**

if initial pressure is 5 atm, initial volume is 6 liter what will be final pressure in atm when final volume is 10 lit?
*March 5, 2012 by Anonymous*

**chemistry**

A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 L and the initial pressure of chlorine was 1.15 atm . The piston was pushed down to change the volume to 1.00 L. Calculate the final pressure of the gas ...
*October 9, 2008 by Anonymous*

**chem**

Can someone glance over my work and see if it looks right? I'm certain about it because my units seem to be a little odd. Chloroform, CHCl3, has a vapor pressure of 197 mmHg at 23. degrees C and 448 mmHg at 45 degrees C. Estimate the heat of vaporization. ln P2/P1= heat of vap...
*March 16, 2007 by Chris*

**Chemistry**

An ideal gas originally at 0.8 atm and 77C was allowed to expand untel its final volume ,pressure and temperature were 600 ml ,0.4 atm and 27C.what was the initial volume
*March 11, 2012 by faisal*

**Chemistry**

Calculate the partial pressure of monatomic hydrogen in hydrogen gas at 2000 K and 1 atm pressure. Given: (i) For ½ H2 -> H, DeltaHo298=217,990 J; DeltaSo298=49.35 J/K. (ii) Assume that the heat capacity of monatomic gas to be 3/2R (iii)The heat capacity of H2 assume to be ...
*March 29, 2012 by John*

**chemistry**

Nitrogen gas with a pressure of 1.3 atm is passed through water at a temperature of 35 degrees celcius. What is the total pressure in the container?
*April 9, 2010 by Meg*

**chemical equilibrium**

if the pressure of n2/h2 in aclosed apparatus is 100 atm and 20 percent of the mixture then react ,the pressure at the same temperature would be
*August 15, 2010 by bharat*

**chemistry**

Determine the final pressure of a gas that has an initial pressure of 1.00 atm and is heated from 20 °C to 30 °C. Round to the nearest hundredth. Don't forget the units.
*July 18, 2011 by Izzie*

**chemistry**

A 10.6 liter at 25 C and 3.21 atm inside pressure became 12.8 liters at 221 C after driving in summer. What is the pressure in the hot tire?
*November 20, 2011 by NONO*

**Chemistry**

At 298 K, the Henry\'s law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen.At 298 K, what is the solubility of oxygen in water exposed to air at 1.00 atm? At 298 K, what is the solubility of oxygen in water exposed to air at 0.896 atm? If atmospheric pressure ...
*February 7, 2013 by Colleen*

**Chemistry**

A sample of iron(II) sulfate was heated in an evacuated container to 920 K, where the following reactions occurred. Reaction (a): 2 FeSO4(s)--> Fe2O3(s) + SO3(g) + SO2(g) Reaction (b): SO3(g)--> SO2(g) + 1/2 O2(g) After equilibrium was reached, the total pressure was 0....
*January 3, 2013 by Cameron*

**Chem question**

gont get it.. To what temp must a sample of nitrogen at 27 degrees C and 0.625 atm be taken so that its pressure becomes 1.125 atm at constant volume i used the formula and it still gave me a weird answer
*April 27, 2008 by jerson*

**Chemistry**

on a particularly hot 30 degrees C day near the seashore the partial pressure of water vapor in the air is .0303atm. given that the atmospheric pressure is 1 atm and the composition of dry air is 78% N, 21% O and 1%Ar, what is the partial pressure of oxygen gas?
*October 7, 2010 by Missy**

**chemistry**

on a particularly hot 30 degrees C day near the seashore the partial pressure of water vapor in the air is .0303atm. given that the atmospheric pressure is 1 atm and the composition of dry air is 78% N, 21% O and 1%Ar, what is the partial pressure of oxygen gas?
*October 7, 2010 by Stacey*

**Chemistry**

a diver exhales a bubble with a volume of 250 mL at a pressure of 2.4 atm and a temperature of 15 degrees celcius. What is the volume of the bubble when it reaches the surface where the pressure is 1.0 atm and the temperature is 27 degrees celcius
*November 14, 2012 by Lauren*

**Chemistry**

If the partial pressure of CO2 is 2.87 atm the soluability in H2O is known to be 4.68 M. What would be the soluability of CO2 in H2O if the partial pressure is increased to 7.60 atm? Assume the temp is held constant. would it work to set up a proportion for this question? if ...
*February 4, 2008 by Jake*

**Chem Question?**

I answered this question already, but would like you to check if the answer I provided was right. If for some reason my answer was not right please provide me with the right answer. 1)The air in the inner tube of the tire of a racing bike has a pressure of 115 psi. Convert ...
*May 5, 2008 by Lisa*

**Chem**

Consider the reaction H2S(g) <==> H2(g) + 1/2S2(g) At 1065*C the partial pressure at equilibrium of hydrogen sulfied, hydrogen and sulfur are found to be .670 atm, .221 atm, and .110 atm, respectively. Find Kp and delta-G* for the reaction. Find delta-G for the reaction ...
*April 16, 2007 by Jessica*

**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 ...
*March 11, 2012 by student*

**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?
*November 6, 2010 by Anonymous*

**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)
*January 22, 2011 by daniel*

**Chemistry**

Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K). Okay when I set up problem MRT....I get something totally different from the answer 2.9 atm. Could u please show me your set up to get to 2.9 atm? Thanks a billion!!
*October 29, 2011 by Chemistry Chick*

**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...
*July 17, 2007 by Jill*

**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 ...
*April 24, 2010 by Val*

**chemistry**

Given: Ti=298K V=.005 L Pt=1 atm P H20 vapor= .0313atm P air= .9687 atm you increase the temperature to 338K; the total pressure remains 1 atm, but the volume increases. Determine the volume at the new temperature (assume water vapor reaches equilibrium at 338K) PLEASE help!! ...
*July 5, 2012 by Kellie*

**Chemistry URGENT**

consider the following container of helium at 45C. intially the valve is closed. After the valve is opened what is the pressure of the helium gas. your start points are 2.00 atm and 9.00L. after opening you have 3.oo atm and 3.00L. The answer is 2.25 atm what formula did you ...
*April 1, 2014 by linda *

**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 ...
*March 11, 2008 by kathy*

**CHM 152**

The freezing point of an aqueous solution of glucose was measured to be -1.52 oC. What is the osmotic pressure, in atm, of 100 mL of this solution at 25.0 oC? (Kf = 1.86 oC/m) When I calculated it out I got 16.79 atm but the answer was wrong dont know what I messed up on.
*June 10, 2010 by Car*

**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)
*November 8, 2012 by Kim*

**Physics**

The boiling point of helium at 1 atm is 4.2 K. What is the volume occupied by helium gas due to evaporation of 70 g of liquid helium at 1 atm pressure and a temperature of 6.2 K?
*February 24, 2012 by Gabe*

**chemistry**

What is the partial pressure of CO2 (torr)in exhaled breathe at 37 degree C. if the partial pressure of O2 is 116 (torr) and that of Nitrogen is 569 (torr). Assume atmospheric pressure is 1 atm. kindly help me with this problem
*November 2, 2012 by Erin 12*

**Chemistry**

An ideal gas is allowed to expand from 6.00 L to 45.0 L at constant temperature. By what factor does the volume increase? ? Number The pressure will Increase by that factor or decrease by that factor? If the initial pressure was 105 atm, what is the final pressure?
*October 16, 2012 by Bill*

**Chemistry**

At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is essentially an aqueous...
*February 6, 2012 by Jeremy*

**CHEMISTRY**

At ordinary body temperature (37 C) the solubility of N2 in water in contact with air at ordinary atmospheric pressure (1.0 atm) is 0.015 g/l. Air is approximately 78 mol % N2. a)Calculate the number of moles of N_2 dissolved per liter of blood, which is essentially an ...
*February 7, 2012 by Jeremy*

**college chem**

At 750°C, the Kp for the reaction 2 CO + O2➞ 2 CO2 is 2.72 x 10^11. ( 2.72 times ten to the eleventh) At that temperature, CO and O2 are added to a constant volume vessel. The initial pressure of the CO is 2.00 atm, and that of the O2 is 1.50 atm. Calculate the ...
*February 26, 2010 by josh*

**chem**

75L stainless steel container was charged with 3 atm of hydrogen gas and 4 atm of oxygen gas. a spark ignited the misture, producing water. what is teh pressure of the tank at 25C? at 125C?
*November 16, 2007 by mel*

**physics**

five mole of an ideal gas are kept at a constant temperature of 53 degree celcius while the pressure of the gas is increased from 1 atm to 3 atm calculate the work done by the gas
*May 5, 2010 by bed*

**Chemistry -- DrBob222**

A gas initially at STP is heated to 50°C keeping the volume constant. What is its new pressure? I used this formula: P1 = 1 atm T1 = 273 K T2 = 323 K solve for P2 P2 = P1 (T2/T1) But, where do I use the 50 degrees C? Also, is my answer correct: P2 = 1atm x 323K/273K = 1.18 atm
*May 24, 2013 by Timofey*

**AP Chemistry**

What is the value of w (work) when 2.6 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal.
*October 5, 2010 by Nick*

**ap chemistry**

What is the value of w (work) when 1.3 moles of H2 expands from 25 liters to 50 liters against a constant external pressure of 1 atm, then expands further from 50 to 100 liters against a constant external pressure of 0.1 atm? Answer in calories. Answer in units of cal
*October 31, 2012 by cheri*

**Chemistry **

An aerosol can is empty, except for the propellant gas which exerts a pressure of 1.20 atm at 21 °C. If the can is thrown into a fire and heated to a temperature of 565 °C, what will be the pressure inside the hot can?
*October 15, 2013 by Blake*

**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.
*May 1, 2013 by Sharaun*

**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 ...
*March 6, 2007 by Chris*

**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?
*June 27, 2010 by Jetta*

**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 ...
*October 8, 2012 by hanna*

**Chemistry DrBob222**

5. What volume would 27g of neon at 2 atm pressure and 50°C occupy? I have solved the problem correctly, but I am not sure if I have the correct units on this conversion so that everything will cancel out. Also, is it right to have 20g Ne/1mole K? I seem to be missing ...
*May 29, 2013 by Timofey*

**chem**

At 20 degrees celsius the vapor pressure of dry ice is 56.5atm. If 10 g of dry ice (solid CO2) is placed in an evacuated 0.25 L chamber at a constant temperature of 20 degrees celsius, will all of the solid sublime? Is the answer no? I don't know if this is right, but I used ...
*January 22, 2011 by jack*

**Chemistry**

A particular gas has a desnity of 11.98 g/dm^3 when the pressure is 138.4 kPa at a temp of 175 degrees F. What is the GMW of this gas? If it is a diatomic gas can you identify the element? dm^3 = L. so it's 11.98 g/L. then i converted 139.4 kPa to 1.37 atm. then i converted ...
*September 6, 2007 by Matt*

**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?
*March 12, 2012 by jamella*

**Chem**

A gas is heated from 252 K to 296 K while its volume is increased from 23.5 L to 30.5 L by moving a large piston within a cylinder. If the original pressure was 0.96 atm, what would be the final pressure?
*May 8, 2014 by Sarah Pick*

**CHEMISTRY**

Suppose a 24.7 mL sample of helium gas at 25.°C and 1.14 atm is heated to 50°C and compressed to a volume of 14.8 mL. What will be the pressure of the sample? My teacher got 2.06 atm. pls explain to me how he got this. THANK YOU
*March 21, 2013 by Lance Pls explain to me this Problem*

**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...
*March 8, 2010 by david*

**chem**

A typical party balloon when inflated has a volume of 7.3 L. How many moles of helium are in the balloon if the pressure of helium is 1.2 atm and the temperature is 20.7 °C? Take the value of R to be 0.08206 L-atm/mol-K.
*July 26, 2012 by hhh*

**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 ...
*November 20, 2010 by Jess*

**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?
*January 15, 2008 by Lauren*

**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.
*November 13, 2012 by matt*

**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.
*March 19, 2013 by JOY*

**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 ...
*March 28, 2012 by greg*

**chemistry**

a weather balloon partially filled w/ 33.5 L of helium @ 18 deg C & .95 atm. what volume will helium occupy @ -23 deg C w/ a pressure of 3 x 10 to the -3 atm?
*January 29, 2013 by Annie*

**Chemistry**

One reaction of iron with hydrochloric acid is represented by the following thermochemical equation. Fe(s) + 2HCl(aq) ? FeCl2(aq) + H2(g); (Delta)H°= –87.9 kJ How much heat is liberated at constant pressure if 0.215 g of iron reacts with 40.4 mL of 0.579 M HCl? How much heat ...
*March 24, 2013 by Raul*

**Chemistry**

I'm having trouble getting the right answer for a problem, I'm hoping that by posting my work someone can help me figure out where I've gone wrong. A two-liter soft drink bottle can withstand a pressure of 5 atm. Half a cup [approximately 120 mL) of ethyl alcohol C2H5OH, (d= 0...
*December 31, 2006 by Alexandria*

**Physics**

0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C. Before I forgot to write the question...so the question is What is the final pressure of the gas? * physics - drwls, Friday, ...
*December 12, 2009 by Ana*

**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.
*October 4, 2011 by Jim *

**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...
*November 17, 2007 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...
*November 17, 2007 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...
*November 17, 2007 by mel*

**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...
*April 11, 2010 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...
*April 11, 2010 by Tokey*

**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.
*November 13, 2012 by Willie*

**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.
*November 6, 2013 by merc*

**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 ...
*March 27, 2007 by Chris*

**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)
*October 9, 2010 by alexie*

**science**

sample of gas at 17Â°C from a volume of 5.68 L and 1.10 atm to a container at 37Â°C that has a pressure of 1.10 atm. What is the new volume of gas?
*November 30, 2011 by Anonymous*

**Chemistry;HELP**

1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has a volume of 350 cm3...
*August 21, 2013 by Unknown*

**CHEMISTRY!! D:**

1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has a volume of 350 cm3...
*September 3, 2013 by Unknown*

**AP Chem**

Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632 mmHg but the temperature is unchanged? 3.35 L 38. ...
*November 12, 2008 by Anna*

**Chemistry**

A sample of gas exerts a pressure of 5.12 atm. What is the pressure of this gas expressed in torr? (3 significant figures, n.nnEn)
*March 27, 2010 by Monica*

**Chemistry**

A sample of gas is placed in a container at 25 degrees C and 2 atm of pressure. If the temperature is raised to 50 degrees C, what is the new pressure?
*February 17, 2011 by Cat*

**chem**

For a mixture of two gases, consisting of 1.00 mol of N2 and 1.00 mol of CF4, at a total pressure is 2.04 atm, what is the partial pressure of N2?
*June 28, 2011 by marl*

**pressure**

4 mL of gas in a piston (syringe) at 10oC and 0.75 atm is heated and expanded to 85oC and 8 mL. What is the pressure of the gas after the expansion?
*November 6, 2011 by nja*

**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?
*March 4, 2013 by Joy*

**AP Chemistry**

Equal masses of Ne and Ar are placed in a rigid, sealed container. If the total pressure in the container is 1.2 atm, what is the partial pressure of Ar?
*November 6, 2013 by Elizabeth*

**chem**

a) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6°C using the ideal gas law. atm (b) Calculate the pressure exerted by 0.5160 mol N2 in a 1.0000 L container at 24.6°C using the van der Waals equation. atm (c) Compare the results. (Write the ...
*November 17, 2007 by mel*

**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
*November 29, 2011 by erica*

**Chemistry**

The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming constant temperature?
*August 28, 2008 by Soojung*

**chemistry**

a mixture of gases contains 0.4 mole of N2, 0.5 moles of O2, and 0.7 moles of H2. What is the partial pressure of O2 if the total pressure is 1.3 atm?
*October 19, 2010 by Sammy*

**Chem**

The air pressure in a tire is 1.20 atm at 77.0 C. Find the pressure of the same amount of gas in the same volume at -12.0 C
*July 11, 2011 by Sarah*

**chem**

A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?
*December 5, 2011 by laura *

**chem**

A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?
*December 5, 2011 by laura *

**chemistry**

A pressure cooker with a volume of 6 L is filled with 27 grams of water and heated to 390.2 K. What is the pressure (atm) in the cooker?
*December 6, 2011 by laura *

**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?
*February 24, 2012 by garrett*

**Chemistry**

A mixture of gases contains 0.4 mole of N2, 0.5 moles of O2, and 0.7 moles of H2. What is the total pressure if partial pressure of O2 is 1.3 atm?
*March 15, 2012 by HELP!!!*

**chemistry**

A constant pressure tank is filled with air at 16.7 Atm at 24C it warms to 65C, what is the tank pressure
*November 7, 2012 by Arde*

**Chemistry- partial pressures**

A sample of gas collected over water at 42 degrees C occupies a volume of one liter. The wet gas has a pressure of .986 atm. The gas is dried and the dry gas occupies 1.04 L with a pressure of 1.00 atm at 90 degrees C. Using this information, calculate the vapor pressure of ...
*January 1, 2007 by Dave*

**chemistry**

Under an O2(g) pressure of 1.00 atm, 30.9 cm3 of O2(g)at 25C dissolves in 1.00 L H2O at 25C. Assuming that the soln volume remains at 1.00L, what is the Molarity of a saturated O2(aq) soln at 25C when partial pressure O2=1 atm? DRBOB222 said to: Convert 30.9 cc O2 at 25C to ...
*August 31, 2011 by Holly*

**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
*January 20, 2009 by Mary*

**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?
*May 2, 2010 by Anonymous*

**chemistry**

A rigid ball that contained 25.0 liters of air at 22°C and 6.25 atm pressure was placed in an oven at a temperature of What was the new pressure inside the ball
*July 8, 2010 by Anonymous*

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