April 20, 2014

Search: Chemistry-gases

Number of results: 102,082

Many of the gases are diatomic. H2, N2, O2, F2, Cl2, Br2, I2 (Br and I are not gases though at STP). The noble gases of He, Ne, Ar, Kr, Xe are monatomic. S and P are S8 and P4; they are solids.
Monday, January 16, 2012 at 9:32pm by DrBob222

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 ...
Wednesday, June 20, 2012 at 9:02pm by Erika

No, because all of the noble gases are monatomic, not diatomic AND all are gases. The question says "not a gas." H2, N2, O2, F2, Cl2, are gases so those are out. I suppose P (P4) and S (S8) are out since those at not monatomic BUT they aren't diatomic either (although they are...
Tuesday, January 31, 2012 at 9:20pm by DrBob222

Technically, there are no ideal gases but several approach being ideal gases. One tells by experiment. If they obey the ideal gas laws they are ideal; if not, they are not ideal gases.
Thursday, December 8, 2011 at 9:30pm by DrBob222

honors chemistry
why were the noble gases considered to be inert gases until the 1960s?
Thursday, May 17, 2012 at 3:11pm by Kellin

Ideal gases obey the gas law, PV = nRT but real gases do not.
Wednesday, January 27, 2010 at 2:35am by DrBob222

what is the difference between the real gases and the ideal gases ???
Wednesday, January 27, 2010 at 2:35am by Mota

Under what conditions of temperature and pressure is the behavior of real gases differ most from that of ideal gases?
Tuesday, July 29, 2008 at 2:03pm by natasha

can u tell me whats the most imprtant subject i need to know for molecular composition of gases ? and for physical characteristics of gases?
Sunday, February 3, 2013 at 6:16pm by phebbie

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!
Tuesday, November 15, 2011 at 2:13am by Hae

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 șC and its volume is 11.0 L? What are the partial pressures of the gases remaining in the mixture?
Wednesday, April 2, 2014 at 11:02pm by Anonymous

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?
Tuesday, January 20, 2009 at 9:58pm by lyne

False Some gases are soluble by reaction, SO2, SO3 are examples. Some gases are soluble in water. O2 is an example, if it wasn't soluble fish would not be able to breathe. Some gases have very low solubility in water so to say that they are 'insoluble' is may be reasonable, Ar...
Friday, November 14, 2008 at 7:21am by Dr Russ

Answer = A (1. No color, clear) Solids can be clear; ex: an ice cube Liquids can be clear; ex: water Gases can be clear; ex: Hydrogen gas Can't be #2 b/c liquids and gases do not scratch up wood. Can't be #3 b/c gases cannot and liquids do not have bumpy surfaces. Can't be #4 ...
Tuesday, March 5, 2013 at 7:43pm by Laura

Do real gases liquify? Why? Do real gases have attractive forces between molecules? How does that affect low pressures?
Tuesday, July 29, 2008 at 2:03pm by bobpursley

I suppose all gases are real. Real gases don't obey the ideal gas laws. Some come close.
Sunday, February 17, 2013 at 10:17am by DrBob222

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. ...
Monday, October 18, 2010 at 5:56pm by Arian

Dont real gas molecules occupy volume, and have attractive forces? Do real gases become liquids? Why? Ideal gases cant do this.
Sunday, October 5, 2008 at 5:15pm by bobpursley

honors chemistry
The dimension or "units" of solubility of gases in water is not liters (L). One often-used unit is grams per liter; another is g/kg. Is that what you meant to type? You will find data for many gases here: ...
Thursday, January 13, 2011 at 1:27am by drwls

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.
Thursday, January 15, 2009 at 9:53pm by Enrique

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
Wednesday, May 5, 2010 at 7:12pm by Erin

The three states of substance are solind liquid and gases among these liquid and gases is a fluid which can flowing easily,liquid called incomprasible and gases called compresible e.g. L.P.G. In gas cylinder can compress so it change its phase from gases to liquid and while ...
Friday, January 28, 2011 at 10:22am by Sandip patel

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.
Sunday, March 27, 2011 at 7:45pm by Amber

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.
Thursday, April 12, 2012 at 11:11pm by Amanda

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?
Friday, April 18, 2014 at 5:20pm by Carrie Boom

At 627ÂșC, 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 ...
Wednesday, February 27, 2013 at 8:45pm by dauntedorange

At 627ÂșC, 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 ...
Tuesday, February 14, 2012 at 8:16pm by dauntedorange

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
Saturday, June 8, 2013 at 10:51pm by Maria

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 ...
Monday, November 29, 2010 at 8:42pm by Ivy

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?
Friday, July 25, 2008 at 11:55pm by Randie

I slept on this problem over the night and realized early this morning that I didn't answer your question. There isn't anything wrong with what I wrote; I just didn't answer the question. You asked for the PARTIAL pressure of ONE of the gases; I gave you the TOTAL pressure of ...
Sunday, January 27, 2008 at 12:16am by drbob222

what are the names of all the gases? i need it for my school poster thing i am doing and really really need to know. oh and i need to know any other info about 'gases around us' (or just gases!! tar xx
Tuesday, September 5, 2006 at 8:18pm by mel

That's as good as any method I know. It uses what we know about substances. You can look up (or from the solubility rules) that NiBr is aq and you know the metals. There are some common gases. Look at the periodic table--it helps with gases that are elements. H2, N2, O2, F2, ...
Sunday, January 13, 2013 at 11:19pm by DrBob222

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?
Saturday, February 15, 2014 at 10:11pm by JJ

I don't know the history of this question but I think the answers are meaningless. What you really want to know is "what products make a reaction go to completion?" That would be gases, ppts, slightly ionized substances. -gases yes -water yes -electrons no -precipitates -acids...
Sunday, October 7, 2012 at 9:28pm by DrBob222

honors chemistry
Their oxidation number of 0 prevents the noble gases from forming compounds readily. All noble gases have the maximum number of electrons possible in their outer shell (2 for Helium, 8 for all others), making them stable.
Thursday, May 17, 2012 at 3:11pm by Elizabeth

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 25°C from 1.3 multiplied by 102 g of nitroglycerin. What are the partial ...
Sunday, February 28, 2010 at 11:17pm by Tanisha

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.
Thursday, January 27, 2011 at 7:14pm by Anonymous

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
Friday, March 16, 2007 at 12:55am by frank

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
Saturday, October 16, 2010 at 8:23pm by susan

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?
Wednesday, June 20, 2012 at 1:06pm by Kim

Chemistry: gases, liquids, solids problem
The easiest approach is to assume that all the gases are ideal gases, so that 4 moles of NH4NO3 produces 14 moles of gas. so 2.5 g of NH4NO3 is 2.50/80.0 moles = 0.03125 moles which will produce 0.03125 x 14/4 moles of gas = 0.1094 moles which is 22.4 L x0.1094 = 2.45 L at STP...
Tuesday, November 30, 2010 at 11:08pm by Dr Russ

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.
Saturday, December 4, 2010 at 3:37am by maggie

under which conditions do real gases most resemble ideal gases
Friday, May 29, 2009 at 5:40pm by Anonymous

what is the differences and similarities between gases,liquids and gases
Saturday, February 23, 2008 at 10:28am by yucel

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 ...
Sunday, January 13, 2013 at 11:45pm by Sara

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 ...
Monday, February 18, 2013 at 7:48pm by a Canadian

Group 18. The noble gases, also called the inert gases although some do form a few compounds.
Wednesday, April 9, 2008 at 3:37pm by DrBob222

Internal energy per mole = Cv*T (for ideal gases), and = (3/2) R T for monatomic gases (like argon) Since you know the number of moles, you don't need to know the volume.
Thursday, December 4, 2008 at 6:03am by drwls

The "1.4" in that formula has more that two significant figures. It is exactly the fraction 7/5, a result that can be derived from thermodynamics of diatomic gases. For monatomic gases the value of the constant is 5/3.
Wednesday, February 25, 2009 at 11:26pm by drwls

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?
Tuesday, March 29, 2011 at 3:54pm by Debbie

Use PV = nRT and solve for n. Then n = grams/molar mass. Solve for molar mass. You can identify the gas from the periodic table. By the way, do you know the possibilities? There are not very many gases in the periodic table. H2, N2, O2, F2, Cl2, + noble gases.
Wednesday, October 27, 2010 at 5:27pm by DrBob222

life orientation
air pollution affects the environment through the process whereby people contribute to global warming by emission of gases which may lead 2 greenhouse gases
Saturday, April 23, 2011 at 8:13am by lincky luv

Wednesday, May 15, 2013 at 8:37pm by bobpursley

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 ...
Saturday, April 2, 2011 at 7:39pm by Cheryl

10th Grade Chem
See if you can find one of the periodic table on the internet that shows pictures of the elements. If you do you will see that the vast majority of the elements are shiny metal solids. Those that are not shiny metal solids are the exceptions. There are only two elements (...
Monday, January 16, 2012 at 11:57pm by Dr Russ

A)In a chemical reaction two gases combine to form a solid. What do you expect for the sign of ΔS? S is higher in gases than solids B) For which of the following processes does the entropy of the system increase? (Select all that apply.) -> alignment of iron filings in...
Monday, March 19, 2012 at 4:12pm by DrBob222

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?
Monday, April 7, 2014 at 10:42pm by ASAP!!

Physics ideal gases
But I would if the gases do no work in case 1. If no work is done and the system is totally isolated from the surroundings so that no heat can pass in or out, then the initial and final states will be the same.
Saturday, January 3, 2009 at 4:24pm by Damon

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.
Sunday, January 8, 2012 at 8:07pm by CHEMISTRY

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.
Sunday, January 8, 2012 at 6:26pm by Bill

Until then everyone thought the "inert gases" really were inert(unreactive). The term inert is not used anymore; these are now called noble gases.
Thursday, September 29, 2011 at 1:42pm by DrBob222

Sunday, July 31, 2011 at 11:15am by DrBob222

You use the coefficients in the balanced chemical equation. mols Mg x (2 mols HCl/1 mol Mg) = mols HCl. Then to convert to grams, mols x molar mass. (Avogadro's Law talks about equal volume of gases containing equal numbers of particles but there is nothing in yuor equation ...
Wednesday, September 24, 2008 at 5:46pm by DrBob222

Reactions occur for the following reasons. 1. An insoluble substance (precipitate) is formed. For this you need to learn the solubility tables. 2. A gas is formed. For this you need to know the gases in the periodic table plus common gases in daily use. 3. A slightly ionized ...
Thursday, February 10, 2011 at 4:52pm by DrBob222

analytical chemistry
we know that gases are soluble in liquids at a certain temperature only..if the liquid however is heated up to a certain point, then the ases dissolved in it would be removed through steam..therefore, distilled water is boiled in orde to remove the dissolved ases such as CO2 ...
Saturday, July 17, 2010 at 12:12am by zedranreB

Aren't noble gases nonmetals?
Monday, December 1, 2008 at 8:12pm by Anonymous

I don't understand the question.
Friday, December 10, 2010 at 4:40am by DrBob222

why do gases mix in any proportion?
Thursday, September 27, 2012 at 4:56pm by Vlera

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?
Monday, September 5, 2011 at 1:23am by Lee

For Vex = velocity of the exhaust gases g = acceleration due to gravity w = the flow rate of the exhaust gases F = the thrust exerted on the rocket Vex/g = F/w or F = wVex/g
Friday, December 9, 2011 at 8:00am by tchrwill

describe the global warming problem. what are the primary gases involved in the green house effect/global warming. how are the gases generated
Sunday, October 4, 2009 at 6:17pm by tran

Gases contract when temperature is lowered.
Wednesday, April 28, 2010 at 7:36pm by bobpursley

Explain why the Noble Gases are unreactive
Wednesday, November 17, 2010 at 11:01pm by Hailey

which solution formed only by gases
Sunday, January 23, 2011 at 7:44am by Anonymous

how do you differenciate ideal and real gases
Thursday, December 8, 2011 at 9:30pm by anonymouse

See your other post.
Thursday, March 1, 2012 at 7:26pm by DrBob222

what is the characteristics of solids, liquids,gases
Tuesday, August 21, 2012 at 5:24pm by ashley

So still all of them are gases! thnx alot
Monday, October 1, 2007 at 4:14pm by Disney man

do gases have a high or low density?
Thursday, April 10, 2008 at 8:03pm by Maya

Thanks for question 1. So what would the partial pressure be for the gases?
Wednesday, August 10, 2011 at 3:33pm by Neha

Why is bond energy defined only for gases?
Tuesday, January 3, 2012 at 11:50am by Ethio

Chemistry: Answers please check
I think 2 is true. I have mixed feelings about 1. I don't think the KMT addresses anything other than gases but the use of the word "all" implies the KMT applies to solids, liquids, and gases. Having said all of that, it is true that even solids have molecules that are moving...
Saturday, April 2, 2011 at 7:34pm by DrBob222

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 ...
Wednesday, December 9, 2009 at 10:19pm by Anon.

Which group of elements are all gases at room temperature?
Tuesday, November 13, 2007 at 1:18pm by Lisa

Which group of elements are all gases at room temperature?
Tuesday, November 13, 2007 at 2:41pm by Lisa

what are three chraracteristics of metalloids and 2 characteristics of noble gases
Saturday, February 9, 2008 at 2:00pm by JOSE

Have you done this? or can you envision it? Liquid disappears; gases appear.
Wednesday, October 3, 2012 at 3:09pm by DrBob222

formula of the gases, atoms to the molecule color, density
Sunday, February 3, 2013 at 6:16pm by DrBob222

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...
Tuesday, April 19, 2011 at 9:56pm by elona

Most gases are more soluble at higher pressures. Most gases are more soluble at low T. Think of the carbonated beverages. When you open the cap gas rushes out. That's because you have decreased the pressure of the gas from whatever it is in the bottle to 1 atm outside the ...
Tuesday, February 21, 2012 at 9:11pm by DrBob222

Why do gases deviate from ideal behavior at very high pressures
Friday, September 5, 2008 at 2:18pm by jr

All gases are in soluble in water.Whether it is ture or false
Friday, November 14, 2008 at 7:21am by ra ny

Why do gases deviate from ideal behavior at very high pressures?
Friday, September 5, 2008 at 2:18pm by chazzie mason

Don't all ideal gases have the same volume at STP?
Saturday, October 16, 2010 at 8:23pm by DrBob222

F2 and Cl2 are gases. Br2 is liquid. I2 is solid.
Wednesday, February 9, 2011 at 5:37pm by DrBob222

List(mention) all the gases collected over water
Sunday, February 20, 2011 at 1:16pm by ejemole glory

hydrogen, and oxygen are gases. when they react, they make steam, a gas.
Monday, September 12, 2011 at 10:04am by bobpursley

I don't what unknown gases you are talking about but see your post above.
Sunday, November 13, 2011 at 3:16pm by DrBob222

Most gases dissolve more as the temperature of the water decreases.
Monday, December 5, 2011 at 2:16pm by DrBob222

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