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November 1, 2014

Search: Chemistry-gases

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Chemistry-Gases
A mixture of gases is prepared from 76.9 g of O2 and 16.0 g of H2. After the reaction of O2 and H2 is complete, what is the total pressure of the mixture if its temperature is 178 C and its volume is 11.0 L? What are the partial pressures of the gases remaining in the mixture?
April 2, 2014 by Anonymous

Grade 9 Chemistry (2)
What is one way in which Noble Gases are different from other elements? a. Noble Gases have low boiling points b. Noble gases have high melting points c. Noble gases have extremely high densities d. Noble gases have unusually high atomic masses Also, what is a 'valence energy ...
June 20, 2012 by Erika

honors chemistry
why were the noble gases considered to be inert gases until the 1960s?
May 17, 2012 by Kellin

chemistry
what is the difference between the real gases and the ideal gases ???
January 27, 2010 by Mota

chemistry
Under what conditions of temperature and pressure is the behavior of real gases differ most from that of ideal gases?
July 29, 2008 by natasha

Solubility of gases
Can somebody tell me a list of (common) gases that are soluble, moderately soluble, and insoluble in water? I would like to know which gases can be collected using the downward displacement of water method. CO2 O2 SO2 H2 CO Noble gases F2 Thank you!
November 15, 2011 by Hae

chemistry
i did a lab and found that of the products two gases were formed H2 and H2CO3 the question is... What are the tests that will verify the identity of these gases? what is this asking?
January 20, 2009 by lyne

chemistry
can u tell me whats the most imprtant subject i need to know for molecular composition of gases ? and for physical characteristics of gases?
February 3, 2013 by phebbie

Chemistry
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting of 4.50 g of He, 15.0 g of Ne, and 33.6 g of Kr in a piston-cylinder assembly at STP. ...
October 18, 2010 by Arian

Chemistry
A 1.0 liter flask is filled with a mixture of two gases at 20. oC until a pressure of 14.43 atm is established. If 0.40 grams of the mixture is hydrogen, how many moles are there of the other gases?
April 18, 2014 by Carrie Boom

Chemistry
Consider the following equation: 4NH3(g) + 5O2(g)----> 4NO(g)+6H2O(g) a. How many liters of oxygen are required to react with 2.5 L NH3? Both gases are at STP b. How many grams of water vapor can be produced from 25 L NH3 if both gases are at STP? c. How many liters of NO ...
November 29, 2010 by Ivy

chemistry
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g)= SO3(g) + NO(g) If all four gases had initial concentrations of 0.840 M, calculate the equilibrium concentrations of the gases.
January 15, 2009 by Enrique

Chemistry
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.520 M, calculate the equilibrium concentrations of the gases
May 5, 2010 by Erin

Chemistry
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) <==> SO3(g) + NO(g)\ If all four gases had initial concentrations of 0.550 M, calculate the equilibrium concentrations of the gases.
March 27, 2011 by Amber

Chemistry!!!!!!
a correction needs to be made to the calculations for real gases as compared to ideal gases. apply these corrections and calculate the real pressure expected for 5 mole of nitrogen in a 1.5L container at a temp. of 20C.
April 12, 2012 by Amanda

Chemistry
At 627ºC, sulfur dioxide and oxygen gases combine to form sulfur trioxide gas. At equilibrium, the concentrations for sulfur dioxide, oxygen, and sulfur trioxide gases are .0060M, .0054M, and .0032M, respectively. a. Write a balanced equation for the formation of one mole of ...
February 27, 2013 by dauntedorange

Chemistry
C2H6 gas and CO2 gas are contained separately in 1.0 L bottles. What do the gases in the bottles have in common? Assume both gases are at STP
June 8, 2013 by Maria

college chemistry
Consider the following equation: 4 NH3(g) + 5 O2(g)= 4 NO(g) + 6 H2O(s) a) HOw many liters of oxygen are required to react with 205 L NH3? Both gases are STP. b)How many grams of water vapor can be produced from 25 L NH3 if both gases are STP? c) How many liters of NO can be ...
April 29, 2014 by la fonda

CHEMISTRY
Which of the following gases will occupy the smallest volume at 300 K and 760 torr and why? 80 g diatomic oxygen 80 g methane 80 g hydrogen fluoride All gases will occupy the same volume
October 16, 2010 by susan

Chemistry
A tank holds equal amounts of 4 different gases (H2, He, O2, N2) at a pressure of 896 mm Hg. The tank contains 2.00 L. What is the individual pressure of each of these 4 gases?
July 25, 2008 by Randie

chemistry 106
Nitroglycerin, an explosive compound, decomposes according to the equation below. 4 C3H5(NO3)3(s) 12 CO2(g) + 10 H2O(g) + 6 N2(g) + O2(g) Calculate the total volume of gases when collected at 1.2 atm and 25C from 1.3 multiplied by 102 g of nitroglycerin. What are the partial ...
February 28, 2010 by Tanisha

science
substances that are gases at room temperature The list of gases is too long to present here. Among the pure elements, the only ones are H2, He, F2, Cl2, Ne, Ar, Kr, Xe and Rn We can add O2 and N2 to the list of elements that are gases at room T. Yes, my mistake. Thanks, Bob
March 16, 2007 by frank

Chemistry
A piston is holding 125 mL of gases at a temperature of 300 K and a pressure of 2.39 atm. What is the volume of the gases if the temperature is increased to 500K and the pressure falls to 2.15 atm?
February 15, 2014 by JJ

Chemistry
All the noble gases except helium crystallize with fcc structures. Derive an equation relating the atomic radius to the density of an fcc solid of given molecular weight and apply it to deduce the atomic radii of the noble gases.
January 27, 2011 by Anonymous

General Chemistry
A container holds 3 gases: oxygen, carbon dioxide, and helium. The partial pressure of the three gases are 2.00atm, 3.00atm, and 4.00atm, respectively. What is the total pressure inside the container?
June 20, 2012 by Kim

chemistry
a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fraction of the gases.
December 4, 2010 by maggie

Chemistry
Assume that the LHMP is enclosed in a transparent polymer stucture. a. How will the gases inside LHMP be affected by hot days and cool nights? b. What design features might be incorporated in the LHMP to reduce those heating and cooling effects? I know that gases expand in ...
January 13, 2013 by Sara

Chemistry
Why wouldn't you do this reaction directly in a lab (and would rather use Hess' Law to determine the enthalpy of formation)?: 1/2N2(g) + 2H2(g)+ 1/2Cl2(g) -> NH4Cl(s) I don't think the reactants are that dangerous...? It's still pretty safe to do in a lab, isn't it? Are ...
February 18, 2013 by a Canadian

science
under which conditions do real gases most resemble ideal gases
May 29, 2009 by Anonymous

science
what is the differences and similarities between gases,liquids and gases
February 23, 2008 by yucel

Chemisty
When the gases dihydrogen sulfi and oxygen react, they form the gases sulfu dioxid and water vapor. How od you write a balanced equation for the reaction?
March 29, 2011 by Debbie

Chemistry: Check please, these are hw assignments
1. Gases can be considered fluids. a.) True b.) False Answer: False 2.Gases are not easily compressed. a.) True b.) False Answer: True 3. Gases spread to fill out space. a.) True b.) False Answer: True 4. Increased pressure on a gas at constant temperature will cause the ...
April 2, 2011 by Cheryl

Chemistry
There are two containers filled with gases. In both containers, gases are at the same temperature and presssure. The first container is 3 L and contains 0.9 moles of gas. The second container is 1 L. How many moles of gas are there in the second container?
April 7, 2014 by ASAP!!

AP Chem
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.580 M, calculate the equilibrium concentrations of the gases.
January 8, 2012 by Bill

tommy
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) SO3(g) + NO(g) If all four gases had initial concentrations of 0.870 M, calculate the equilibrium concentrations of the gases.
January 8, 2012 by CHEMISTRY

chemistry
why do gases mix in any proportion?
September 27, 2012 by Vlera

Chemistry
What are the differences between "wet gases" and "dry gases?" Wet gas - contains H2O whereas Dry gas - does not contain H2O? Dry gas only contain Hydrogen?
September 5, 2011 by Lee

Chemistry
Explain why the Noble Gases are unreactive
November 17, 2010 by Hailey

chemistry
which solution formed only by gases
January 23, 2011 by Anonymous

chemistry
how do you differenciate ideal and real gases
December 8, 2011 by anonymouse

chelmistry
describe the global warming problem. what are the primary gases involved in the green house effect/global warming. how are the gases generated
October 4, 2009 by tran

chemistry
do gases have a high or low density?
April 10, 2008 by Maya

Chemistry
Why is bond energy defined only for gases?
January 3, 2012 by Ethio

chemistry
Introduced into a 1.50L container is 0.100mol PCl5(g). The flask is held at 227degreesC until equilibrium is established. What are the partial pressures and the total pressures of the gases in the flask at the equilibrium. PCl5(g)<-->PCl3(g)+Cl2(g) I got a total pressure...
April 19, 2011 by elona

Chemistry
Which group of elements are all gases at room temperature?
November 13, 2007 by Lisa

Chemistry
what are three chraracteristics of metalloids and 2 characteristics of noble gases
February 9, 2008 by JOSE

chem- to clarify....
"How does a gas differ from a liquid with respect to the following property: Ability to mix with other substances of the same phase to form homogeneous mixtures Gases form homogeneous mixtures with each other regardless of the identities or relative proportions of the ...
December 9, 2009 by Anon.

chemistry
Why do gases deviate from ideal behavior at very high pressures
September 5, 2008 by jr

chemistry
All gases are in soluble in water.Whether it is ture or false
November 14, 2008 by ra ny

chemistry
calculate the densities of each of the following gases in g/L at STP: a. F2 b. CH4 c. Ne d. SO2
June 27, 2010 by Jetta

chemistry
Which of the following gases effuses the fastest at a given temperature? Ne CH4 Ar H2
October 31, 2010 by smith

chemistry
List(mention) all the gases collected over water
February 20, 2011 by ejemole glory

Chemistry
Describe the density and compressibility of solids versus liquids and gases.
May 24, 2012 by Lily

chemistry
Water can be decomposed to hydrogen and oxygen. How many grams of water must decompose to yield 24.0L og gases at 1.00atm and 25 degrees C? I used n=PV/RT to find 0.981 moles of gases. I then took the ratio of O2 to H2 to find the moles of oxygen compared to hydrogen. 0.327 ...
December 8, 2011 by TJ

chemistry
1 gram of C3H8 gas and 1 gram of O2 gas are delivered to a metal sphere with a fixed volume of 1 L. After the two gases are introduced, the two reactants are ignited and burned according to the balanced reaction C3H8(g)+5O2(g)changes to3CO2(g)+4H2O(g) After reaction, the ...
December 5, 2011 by laura

chemistry
1 gram of C3H8 gas and 1 gram of O2 gas are delivered to a metal sphere with a fixed volume of 1 L. After the two gases are introduced, the two reactants are ignited and burned according to the balanced reaction: C3H8(g)+5O2(g)changes to 3CO2(g)+4H2O(g) After reaction, the ...
December 6, 2011 by laura

Chemistry
Completion Mole ratios from balanced equations may be used to solve problems with other units such as numbers of ______ and _______ of gases at STP. The _______ from the balanced equation are used to write conversion factors called ________. grams and volume of gases @STP (but...
April 26, 2007 by Bryan

Chemistry 101
Are these correct? 1. A sample of gases contains three gases at the following pressures: 1.2 atm N2, 3.2 atm O2, and 0.56 atm Xe. What is the total pressure in the container? a. 5.0atm b. 1.4atm c. 2.2atm d. 1.0atm e. 1.7atm I am pretty sure it is A. Is that correct? 2. The ...
November 24, 2009 by Madison

chemistry
How do gases compare with liquids and solids in terms of the distance between their particles
November 15, 2009 by lynda smith

chemistry
Rank gases from highest average molecular speed to lowest Ne, HBr, CO
January 21, 2011 by psk

chemistry
which of the ff are gases at 50 degrees celcius bromine, mercury, propane, radon, silver
October 2, 2012 by linda

physical chemistry
which one of the following pairs of gases contains the same no. of molecules:
June 18, 2014 by veer

Environmental Science
I am writing a report on greenhouse gases. Most of it is very depressing about how greenhouse gas emissions have increased over the pats decade. I want to highlight, however, greenhouse gases, if any, which have decreased. Can you think of any?
April 5, 2011 by Regina

science
An aerosol can contains gases under a pressure of 4.6 atm at 18◦C. If the can is left on a hot sandy beach, the pressure of the gases increases to 4.69 atm. What is the Celsius temperature on the beach
March 9, 2014 by darla

Chemistry
1. Out of all the "8" unknown gases, which one is the most likely to depart from the ideal gas behavior? Why? 2. Out of all the "8" unknown gases, which one is most likely to behave closest to that of an ideal gas? Why?
November 13, 2011 by Michael

Physics
Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), and its temperature is 298 K. The other gas is neon (Ne). What is the temperature of the neon?
December 3, 2012 by Frustrated

EARTH SCIENCE
How are carbon dioxide and other trace gases thought to be potentially related to global warming? Are the levels of these gases in our atmosphere increasing or decreasing? Why? Finally, what are some of the observed climatic trends and possible consequences associated with ...
July 14, 2010 by Anonymous

Chem-Help Please!!!
a correction needs to be made to the calculations for real gases as compared to ideal gases. apply these corrections and calculate the real pressure expected for 5 mole of nitrogen in a 1.5L container at a temp. of 20C. Note: I tried to find right formula for this but couldnt...
April 18, 2012 by Amanda

Chemistry HELP!
What is the translating word equation for water decomposes to form hydrogen oxygen gases?
March 11, 2008 by Student08

Chemistry
Why do gases behave in a less ideal manner when in LOW TEMP. AND HIGH PRESSURE?
October 5, 2008 by Alison

Chemistry
explain how the celsius scale was devised and why it is not appropriate to use it when describing the behavior of gases
October 22, 2008 by Hannah

Chemistry
Please briefly explain why is bond energy defined only for gases? Thanks for your help again.
January 9, 2012 by Ethio

Chemistry
Which of these gases would you expect to have the largest van der Waals constant a? a. H2 b. HF c. F2
November 13, 2012 by Anonymous

Chemistry
How many liters of Co2(g) can be produced in the reaction of 5.24 L and 2.65 L O2 (g) if all these gases are measure at the temperature and pressure?
October 26, 2013 by Grace Peterson

Chemistry
Use intermolecular forces to explain why alkanes with 1-4 C are gases; 5-16 C are liquids; and greater than 16 C is solid
April 21, 2014 by Maria

CHEMISTRY
Why dissolving gases in the liquids is exothermic while the phase is down ? explain please
September 22, 2014 by MAD

EARTH SCIENCE
How are carbon dioxide and other trace gases thought to be potentially related to global warming? Are the levels of these gases in our atmosphere increasing or decreasing? Why? Finally, what are some of the observed climatic trends and possible consequences associated with ...
July 18, 2010 by Anonymous

Chemistry
Since gases can be highly compressed, what must be true of the spaces between the molecules of the gas?
February 23, 2008 by Janice

Chemistry
Which of the following gases will effuse through a hole in a balloon fastest? a.Kr b.NO c.N2O d.NO2 e.ArNO2
November 6, 2012 by Brittany

college Chemistry
What would you expect to be the chemical names of the main gases that were dissolved in the tap water?
May 5, 2013 by judy

Chemistry
The van der Waals equation for real gases recognizes that (A) the molecular atrractions between paritcles of a gas decreases the pressure exerted by the gas (B) the non-zero volumes of gas particles effectively decrease the amount of "empty space" between them (C) gas ...
January 3, 2010 by Anonymous

science (check answer?)
What does aluminum, germanium, and polonium have in common? A. They are gases. B. They have properties of metals and nonmetals. C. They are all metals. D. They have the same properties as the noble gases in the last column. (I think its B.)
March 13, 2014 by Anonymous

chemistry
make a prediction about the relative boiling point of the nobel gases. give a reason for you answer.
April 27, 2010 by sam

chemistry 12 - gases
The molecular formula for this compound (14.37% H, density of 1.13 g/L at 24 C and 743 mmHg) is C_H_ I am not sure how to use this information
February 29, 2012 by Rose Bud

Chemistry
What mass of Helium will occupy 2 times the volume of 10.0 grams of Neon if both gases are measured at STP?
April 18, 2012 by Anna

Chemistry
Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 155 of ?
November 2, 2012 by Elaine

chem
An aerosol can contains gases under a pressure of 4.5 atm at 15◦C. If the can is left on a hot sandy beach, the pressure of the gases increases to 4.78 atm. What is the Celsius temperature on the beach? Answer in units of ◦C
May 30, 2014 by reis

Chemistry
Can someone please help me determine if these questions are correct. If there not can you point me in the rightdirection...please...please...and thank you! 1. Compared to the particles of a gas, the particles of a liquid a. Are not in constant motion b. Collide with the sides ...
September 23, 2009 by Jessie

chemistry
Molecular size in real gases causes positive deviations from the PV/RT ratio of an ideal gas. a. True b. False
October 12, 2009 by Sheena

Chemistry
3 H2 (g) + N2 (g) --> 2 NH3 (g) How many liters of ammonia gas can be produced from 10.0 L of N2 and 20.0 L of H2? Assume all gases are measured at the same temperature and pressure.
February 8, 2011 by James

college chemistry
When ammonium carbonate decomposes, what would happen to a glowing splint in the presence of the gases that are evolved. Explain
April 3, 2011 by jennifer

chemistry
The gases in a mixture have the following partial pressures at the same volume and temperature: 1,013,000 Pa nitrogen, 700 mm argon, 1.20 atm of helium, 790 torr oxygen, and 0.50 atm of carbon dioxide. Rank these gases in order of increasing mole fraction, putting the gas with...
April 29, 2010 by tete

science grade 5
what happens to solids,liquids,and gases when they are heated? Liquids evaporate Gases evaporate And it depends on what kind of soloid it is Gasses Dont e-vapor-ate, they are already vapor. They all expand. (As the molecules move faster, they move apart from one another.)
November 15, 2006 by kathy

Chemistry
Which of the gases most closely resembles an ideal gas at standard temperature and pressure? 1) CO2 2) NH3 3) HI 4) H2 5) H2O why would it be H2
August 29, 2010 by Amy~

Chemistry
A 1.00-L gas sample at 100.C and 611 torr contains 50.0% helium and 50.0% xenon by mass. What are the partial pressures of the individual gases?
November 6, 2010 by Anonymous

Chemistry
Which of the following gases will occupy the smallest volume at 300 K and 760 torr and why? 80 g diatomic oxygen 80 g methane 80 g hydrogen fluoride
October 17, 2011 by Sven

Chemistry 12 - Gases
What volume of oxygen (at 82.1 oC and 713 mmHg) will be produced by the decomposition of 5.71 potassium chlorate? i am not sure what the unit is on the 5.71 ( cause it's not given) so thats not a typo.
February 29, 2012 by Rose Bud

Chemistry
Which property of gases best explains the ability of air bags to cushion the force of impact during a car accident?K
October 14, 2012 by Kiley

Chemistry (henry's law and IGL)
Can Henry's Law be used for gases that obey the Ideal Gas Law? What about gases that do not obey the ideal gas law? when can you use/Not use henry's law?
November 8, 2012 by Ania

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

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