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December 18, 2014

Search: A sample of gas occupies 13 L under a pressure of 1.3 atm. What would th..

Number of results: 67,058

Chemistry / Gas Law
350.0 mg of an unknown gas effuses through a small hole into a 2.00 L flask. It effuses at a rate 1.27 times faster than sulfur dioxide at the same temperature, 20.0 degree C. What pressure would it exert in the 2.00 L flask?
March 8, 2012 by Mae

physics
The pressure in a fire hose is 20 atm. How high can a firefighter spray water from this hose? One atm is about 1105 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 2
In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer sample?
March 26, 2010 by Mike

General Chemistry 1
Gaseous hydrocarbons, which contain only carbon and hydrogen, are good fuels because they burn in air to generate large amounts of heat. A sample of hydrocarbon with mass 1.48 g exerts a pressure of 1.32 atm in bulb with volume 967 mL at 21.5 oC. Molar Mass of this hydrocarbon...
March 4, 2012 by Dan

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
Ideal gas law question A 4.0 liter container has two gases inside, neon and argon. It is known that at 18 C, the total pressure of the combined gases is 0.850 atm. If it is known that there are 0.100 moles of neon in the container, how many moles of argon are in the container...
April 25, 2011 by Thao

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
during an effusion experiment, oxygen gas passed through a tiny hole 2.5 times faster than the same number of moles in another gas under the same conditions. What is the molar mass of the unknown gas?
July 5, 2014 by Brooklynne

calculus
At a constant temperature, the pressure, P, and volume, V, of a trapped gas have the relationship P equals the quotient of k divided by V , where k is some positive constant. What occurs if the volume is compressed such that V → 0+? The pressure increases without bound. ...
February 5, 2014 by ashley

chem
A 16.5 cm3 bubble under the ocean at 2.1 atm and 12.5oC surfaces to 1.0 atm and 22.1oC. What is the new volume (in cm3)? i used (p1)(V1)/T1=(P2)(V2)/T2 (2.1)(.0165)/285.65=(1)(V2)/295.25 THE ANSWER I GOT IS .0335 i changed 16.5 to liters which is why its .0165 is this correct?
October 17, 2010 by kellie

scince maths
1- What volume of hydrogen gas at 273 K and 1 atm pressure will consumed in obtaining 2.16 gm of elemental born(atomic mass=10.8)from the reduction of born trichloride by hydrogen: A- 44.8 lit B-22.4 lit C- 89.6 lit D-67.2 lit
May 27, 2008 by rohit

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

Chemistry
Chlorine gas, CL2 is used to purify water. How many moles of chlorine gas are in a 7.00L tank if gas has a pressure of 865mmHg anf temp of 24 degree celcius?
November 13, 2011 by Ida

Physics
A cylinder 1.00 m tall with inside diameter 0.120 m is used to hold propane gas (molar mass 44.1 g/mol). It is initially filled with gas until the gauge pressure is 1.30 x 106 Pa and the temperature is 22.0oC. The temperature of the gas remains constant as it is partially ...
December 6, 2014 by Lan

chemistry
If you collect hydrogen gas over water at a temperature of 45 degrees celcius, what is the volume of jst te hydrogen if the pressure of hydrogen is 1.23 atm and the grams of hydrogen was 2.6? What is the volume of the water?
December 4, 2010 by regina

Chemistry
Okay, so I got question 1 but I don't know how to solve question 2. Since they are tied in, I'll post both of them. 1. When 0.43g of NaNO2 is allowed to react with an excess of HSO3NH2, the volume of N2 gas produced is 0.145 L. After the reaction is completed, the temperature ...
November 15, 2010 by yipez

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 1105 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

chemistry 106
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-half of its original pressure, and its absolute temperature is decreased to one-seventh of the original. What is the final volume of the gas?
February 28, 2010 by Tanisha

chemistry
An ideal gas is in a cylinder with a volume of 5.5 ✕ 102 mL at a temperature of 25C and a pressure of 710 torr. The gas is compressed to a volume of 29 mL, and the temperature is raised to 810C. What is the new pressure?
November 2, 2013 by Anonymous

chemistry
a closed gas cylinder contains 0.500 mole h2, 0.300 mole o2, 1.200 mole co2 at a temperature of 25'c and presure of 2.00 atm 1) calculate the volume of the cylinder 2) calculatethe partial pressure of the cylinder if the volime is decreased to 25% of its original value at ...
October 26, 2012 by annah

chemistry
Imagine that you have a 5.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...
November 18, 2011 by unknown

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...
December 20, 2012 by P Vijay Kumar

Chemistry
Imagine that you have a 7.00L gas tank and a 3.50L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 135atm , to what pressure should you fill the...
August 20, 2014 by De'Brickashaw

Chemistry
Exactly 5.02 grams of an unknown gas was sealed in a 3.0L flask at 37 degrees celsius and a pressure of 1.25 atm. Which on of the following is most likely to be the unknown? H2O, HBr, HCN, H2S, C2H2 ok so I did (1.25)(3.0) = n(0.0821)(310) 3.75 = n(25.451) n=0.1473 Then I did ...
January 16, 2012 by Hannah

Chemistry
The pressure of 6.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its absolute temperature is decreased to one-seventh of the original. What is the final volume of the gas?
September 20, 2010 by Rachel

Science
A pressure of 2 KPa is acting on a gas with a volume of 60 liters. If the pressure decreases to 1 kPa, what volume will the gas occupy?
May 5, 2011 by Danielle

finite math
Among 26-31 year old, 29% say they have written an editorial letter while under the influence of peer pressure. Suppose six 26-31 year old are selected at random. (a) that at least one has not written under the influence of peer pressure. (b) what is the probability of that at...
June 17, 2014 by carol

Chemistry
A steel cylinder contains 98.0 moles of oxygen gas at temperature of 38 degree Celsius and a pressure of 740 torr. After some of the oxygen gas has been used, the pressure is reduced to 332 torr at a temperature of 24 degree Celsius. What mass of oxygen gas is removed from the...
February 3, 2011 by K

Physics
Assume that 0.10 mol of argon gas is admitted to an evacuated 50 cm3 container at 20 C. The gas then undergoes isobaric heating to a temperature of 300 C. What is the final pressure of the gas? What is the final volume?
August 4, 2012 by VW

12th grade physics
Helium is monatomic with a relative atomic mass of 4. calculate (i) the density of helium gas at a temperature of 0 degrees Celsius and a pressure of 101kPa and (ii) the rms speed of the helium atoms under these conditions
September 20, 2010 by Enya

Chemistry
This is a question on Non-standard states. Calculate G605 for the following reaction under the given conditions. Use data obtained from the table below and assume that Ho and So do not vary with temperature. C2H4(g) + H2O(g) C2H5OH(g) The Ho and So values as well ...
February 2, 2007 by Sally

physics
A 22.0-L tank of carbon dioxide gas (CO2) is at a pressure of 9.40 105 Pa and temperature of 22.0C. (a) Calculate the temperature of the gas in Kelvin. K (b) Use the ideal gas law to calculate the number of moles of gas in the tank. mol (c) Use the periodic table to compute ...
April 29, 2013 by Annette

physics
an athlete has a large lung capacity of 7.0L. Assuming to be an ideal gas how many molecules of air are in the athletes lungs when the air temperature in the lungs is 37 degrees celcius under normal atmospheric pressure.
February 28, 2010 by Standard C.

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

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

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
January 17, 2011 by Anonymous

Chemistry
"The analyzer said that at 20degreesC the unknown gas was 82.8% carbon by weight and 17.2% hydrogen. The analyzer also diffused the gas through a special apparatus and measured the rate of its diffusion compared to how fast oxygen gas diffused under the same conditions. The ...
January 17, 2011 by Anonymous

Chemistry
at a pressure of 390.0 kPa, a sample of ideal gas containing 110. moles of propane is collected at a tempature of 55 degrees celcius. find the volume of the propane tank used
February 25, 2013 by Elizabeth

Chemistry
at a pressure of 390.0 kPa, a sample of ideal gas containing 110. moles of propane is collected at a tempature of 55 degrees celcius. find the volume of the propane tank used
February 25, 2013 by Elizabeth

chemistry
a pressure of 96.5Kpa is exerted by a mixture of nitrogen gas and water vapor in a equilibrium with liquid water at 18 degree celcius , what is the partial pressure exerted by the nitrogen gas?
November 6, 2012 by nimmy

Chemistry
Does mass affect pressure? I understand volume, and temperature does but not sure about mass. If I have a gas with mass 15 g, wont this exert less pressure than a gas have a mass of 30 g?
April 1, 2013 by Shadow

Chemistry
Consider a sample of helium and a sample of neon, both at 30C and 1.5atm. Both samples have a volume of 5.0 liters. Which statement concerning these samples is not true? a- each weighs the same amount b- each has the same # of atoms of gas c- the density of the neon is ...
November 6, 2009 by John S.

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
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 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

chem
Carbon monooxide CO is product of incomplete combustion of fuel. Find the volume that 42g of CO gas occupies at STP.
April 5, 2010 by Bobby

Chem
2. Carbon monooxide CO is product of incomplete combustion of fuel. Find the volume that 42g of CO gas occupies at STP
April 6, 2010 by Courtney

Chemistry
Zn metal was allowed to react with hydrochloric acid to produce hyrdogen gas.This gave a total of 555mL of gas collected over water at 20C and a pressure of 747mm of Hg. How many moles of hydrogen were collected? The vapor pressure of water at 20C is 18mm Hg.
March 5, 2012 by Cynthia

Physics
Incandescent lightbulbs are filled with and inert gas to lengthen the filament life. With the current off ( at t= 20.0 degrees Celsius), the gas inside a lightbulb has a pressure of 115kPa. When the bulb is burning, the temperature rises to 70.0 degrees Celsius. What is the ...
November 15, 2012 by Anonymous

physics help pleasee!
Three moles of oxygen gas (O2) are placed in a portable container with a volume of 0.0037 m3. The temperature of the gas is 330C. (a) What is the pressure of the gas? ? Pa (b) What is the average kinetic energy of an oxygen molecule? ? J
December 7, 2008 by kelsey

science
how do i ansewr this question? An aerosol spray can with a volume of 400. mL contains 2.25 g of propane gas (C3H8) as a propellant (a) If the can is at 31C, what is the pressure in the can? (b) What volume would the propane occupy at STP? (c) The can's label says that ...
December 14, 2012 by Samantha

Chemistry
1.00 g of sodium is added to a large excess of water under conditions of constant pressure (1.00 atm) and constant temperature (25 C ). The following reaction occurs: 2Na (s) +2H2O (l)------> 2NaOH (aq) +H2(g) Delta Hrxn =-369 kJ/mol Calculate the heat released after 1.00...
March 18, 2012 by Riley

Chemistry
Al and Fe react with HCl to produce a chloride salt and hydrogen gas. A .1924g sample of a mixture of Al and Fe is treated with excess HCl solution. A volume of 159mL h2 gas is collected over water at 19C and 841 torr. What is the mass percent by mass of Fe in the mixture? The...
September 29, 2014 by Lisa

Chemistry
From data below, calculate the total heat (in J) associated with the conversion of 0.265 mol ethanol gas (C2H6O) at 451C and 1 atm to liquid ethanol at 25.0C and 1 atm. (Pay attention to the sign of the heat.)
January 29, 2014 by Sarah

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 22C 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

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

chemistry
How much hydrogen gas (mL) would be rpoduced at 25 degreez C and 1.34 atm if 5.5 grams of zinc reacts with 25mL of 0.05 M hydgrchloric acid? Please respond with how u found the answer
May 25, 2013 by mb

Chemistry
At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: 2NO(g)+(3/2)O2(g)+H2O(l)-->2HNO3(g) If all of the nitric acid produced by this reaction is dissolved into 25 mL of...
March 31, 2010 by Claire

Chemistry
At 298.K and 1.00 atm, assume that 22 mL of NO gas reacts with 18 mL of oxygen gas and excess water to produce nitric acid according to the following equation: 2 NO(g) + 3/2 O2 (g)+ H2O(l)?? 2 HNO3(g). If all of the nitric acid produced by this reaction is collected and then ...
October 26, 2010 by Ricky

chemistry
A tank has a pressure of 20.3 atm at a temperature of 22.6 oC. After heating, the temperature rises to 52.7 oC. What is the new pressure?
September 5, 2010 by Mely

Chemistry
A mixture of gases is made up 0.48 mol of Ar and 0.94 mol of N2 with a total pressure of 1.68 atm. What is the partial pressure of Ar?
March 4, 2014 by Eddie

chemistry
a mixture of N2, O2 and Ar have mole fractions of 0.25, 0.65, and 0.10, respectively. What is the pressure of N2 if the total pressure of the mixture is 3.9 atm?
April 16, 2014 by Anonymous

Chemistry
What would increase the pressure inside a tank of helium gas?
January 24, 2008 by Monique

chemistry
f the pressure of 2 L of a gas at STP doubles, the new volume would be
September 5, 2008 by jr

College Chemistry
Using the molar volume (STP) or the ideal gas law equation, determine the molar mass,g/mole, of each of the following. A: 11.2g of a gas that has a volume of 1.50Lat STP? B: .0710g of a gas that has a volume 825ml at 1 atm
October 21, 2012 by Will

AP CHEMISTRY
A)In a chemical reaction two gases combine to form a solid. What do you expect for the sign of ΔS? B) For which of the following processes does the entropy of the system increase? (Select all that apply.) -> alignment of iron filings in a magnetic field -> the ...
March 19, 2012 by HELP PLEASE

Chemistry - Science (Dr. Bob222)
Nitrogen gas has values of Cv and Cp of 20.8 and 29.1 J K-1 mol-1, respectively. When a certain amount of nitrogen is heated at constant pressure, what fraction of the heat Q is used to increase the internal energy of the gas, and how is the remaining energy used? A) 3/2 of Q ...
May 8, 2014 by Ana

general inorganic biochemistry
you have set up the apparatus for this experiment and collected the following data: Atmospheric pressure- 721.o torr temperature-22.0c Gas constant- 0.0821 L atm/mol K you then ran the experiment using 0.3234 g of alka seltzer and generated a volume of CO2 of 40.16 ml How many...
November 1, 2011 by kim

chemistry
1.50 mol sample of helium at a certain pressure and temperature has a volume of 31.4 L. a second sample of helium at the same temperature and pressure has a volume of 42.4 L. Therefore the second sample contains how many moles of helium?
April 30, 2014 by Anonymous

chemistry
A 2.50-g sample of powdered zinc is added to 100.0 mL of a 2.00-M aqueous solution of hydrobromic acid in a calorimeter. The total heat capacity of the calorimeter and solution is 448 J/C. The observed increase in temperature is 21.1 C at a constant pressure of one atm. ...
October 27, 2013 by brianna

Physics help
A gas sample enclosed in a rigid metal container at room temperature 20C has an absolute pressure p_1. The container is immersed in hot water until it warms to 40C. What is the new absolute pressure p_2? Express your answer in terms of p_1. I was told to use p_1/T_1=p_2/T_2 I ...
August 14, 2011 by Catie

Chemisrty
Determine which law is appropriate for solving the following problem. What volume will 1.56 liters of a gas at 27C and 745 mmHg of pressure occupy at 100C and 700 mmHg of pressure? Law used: Boyle's Law Charles' Law Combined Gas Law
October 19, 2011 by Angel

chemistry
5.0 moles of a gas is put into a container of 2.0L. More gas is added to the flask s othat there is now 15 moles of the gas present. What must the new volume be if temperature and pressure are to remain constant?
February 4, 2010 by lelia

AP Chemistry
The rate of effusion of unknown gas X is found to be about 1.5 times that of SF6 gas (MW=146 g/mol) at the same conditions of temperature and pressure. What is the molecular weight of gas X? Answer in units of g/mol
February 16, 2014 by Gabriella

Chemsitry
Consider the equilibrium A(g)=2B(g)+3C(g) at 25 degrees Celsius. When A is loaded into a cylinder at 10 atm and the system is allowed to come to equilibrium, the final pressure is found to be 12.13 atm. What is the standard gibbs free energy of reaction for this reaction.
January 31, 2014 by Anonymous

Chemistry
Hi. Can anybody help me with crystals? I have a gas that makes blue crystals when it's been hold in low temperature and high pressure. If pressure becomes higher, it makes red crystals, if pressure becomes lower then it reurns to the blue color. If pressure stil becomes lower ...
March 21, 2009 by Ksenija

chemistry
Here is the question: sodium hydride reacts with excess water to produce aqueous sodium hydroxide and hydrogen gas: NaH(s)+H2O-->NaOH(aq)+H2(g) A sample of NaH weighing ________g will produce 982mL of gas at 28.0 C adn 765 torr, when the hydrogen is collected over water. ...
June 17, 2009 by Gweedo

Chemistry
The volume of a gas is 17.7 mL at 41◦C and 0.819 atm. What will the volume be at 16◦C and 0.996 atm? Answer in units of mL
October 25, 2014 by Lek

Chemistry
A 10.0 mL sample of 12.1 M hydrochloric acid is added to 90.0 mL of distilled water and added to a sealed 1.04 L reaction vessel containing 1.463 g of calcium hydrogencarbonate at 22.1C and 743 mmHg. What is the pressure of carbon dioxide gas?
December 15, 2010 by Millie

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?
October 31, 2010 by smith

chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 10.1 centimeters per second. What is the approximate molar mass of the unknown gas?
May 26, 2011 by Carly

physics
pls.. help me with this i really need it.. pls. A gas in a cylinder expands from a volume of 0.110 m3 to 0.320 m3. Heat flows into the gas just rapidly enough to keep the pressure constant at 1.65 x 105 Pa during the expansion. The total heat added is 1.15 x 105 J. (a) Find ...
June 23, 2014 by acinad

chemistry
Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem. Unbalanced equation: H2 (g) + O2 (g) yields H2 O(g)
July 14, 2011 by kendra

Physical Science
Hello, I wanted toknow if I came to the correct solution for this problem. Thank You, 20 Cubic inches of a gas with an absolute pressure of 5 psi is compressed until its pressure reaches 10 psi. What is the new volume of the gas?(assume that there's no temperature change.) my ...
February 5, 2008 by Mandi

Chemistry
A sample of gas has a volume of 8.1 liters at 1 atmosphere pressure and 203.0 K. What is its volume (liters) at STP?
March 25, 2013 by Linzy

chemistry
At 25 degrees celcius and 1.0 atm, 0.25 g of gas dissolves in 1.00 L of water. What mass of the gas dissolves in 1.00 L of water at 25 degrees celcius and 3.0 atm?
March 27, 2008 by trista

Math Word Problems
#1. The pressure P of a compressed gas is inversely proportional to the volume V. If there is a pressure of 35 pounds per square inch when the volume of gas is 400 cubic inches, find the pressure when the gas is compressed to 100 square inches. #2. A frictional force is ...
September 1, 2010 by Carmen

Math-12th grade
#1. The pressure P of a compressed gas is inversely proportional to the volume V. If there is a pressure of 35 pounds per square inch when the volume of gas is 400 cubic inches, find the pressure when the gas is compressed to 100 square inches. #2. A frictional force is ...
September 9, 2010 by Mary

chemistry
472 mL of H2 gas was collected over water when 1.256 g of Zn reacted with excess HCl. The atmospheric pressure during the experiment was 754 mm Hg and the temperature was 26 degrees C. A. Write the balanced chemical equation (I have this) Zn + HCl ---> ZnCl2 + H2 B. What is...
November 19, 2012 by Jeremiah

Chemistry
I need to take some following samples of these: *a hydrocarbon w/a molecular mass greater than 100 g/mo *something w/ L-carvone or D-carvone in it *a non-electrolyte that dissloves in water *something w/a pressure greater than 2.o atom *a proton donor can you help me?? Go down...
February 4, 2007 by VaNeSsA

Chemistry
A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 894 torr at constant temperature?
July 11, 2011 by Jacob

chemistry
You have a 1 L container of a gas O 2 at 20C and 1 atm. Subtracting the weight of the container, what is the mass of the gas?
April 6, 2012 by david

chemistry
You have a 1 L container of a gas O 2 at 20C and 1 atm. Subtracting the weight of the container, what is the mass of the gas?
April 9, 2012 by sam

chemistry
At 23C, Kp = 0.075 for the equilibrium: NH4HS (s) ↔ NH3 (g) + H2S (g) A sample of solid NH4HS is placed in a closed vessel and allowed to equilibrate. Calculate the equilibrium partial pressure (atm) of ammonia, assuming that some solid NH4HS remains.
September 14, 2012 by Nicole

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