Number of results: 92,330
Chemistry
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 ...
Wednesday, June 20, 2012 at 9:02pm by Erika
chemistry
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
Chemistry
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 (...
Tuesday, January 31, 2012 at 9:20pm by DrBob222
chemistry
what is the difference between the real gases and the ideal gases ???
Wednesday, January 27, 2010 at 2:35am by Mota
honors chemistry
why were the noble gases considered to be inert gases until the 1960s?
Thursday, May 17, 2012 at 3:11pm by Kellin
chemistry
Ideal gases obey the gas law, PV = nRT but real gases do not.
Wednesday, January 27, 2010 at 2:35am by DrBob222
chemistry
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
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
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?
Sunday, February 3, 2013 at 6:16pm by phebbie
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?
Tuesday, January 20, 2009 at 9:58pm by lyne
chemistry
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 ...
Friday, November 14, 2008 at 7:21am by Dr Russ
physics
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...
Tuesday, March 5, 2013 at 7:43pm by Laura
chemistry
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
chemistry
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
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 ...
Monday, October 18, 2010 at 5:56pm by Arian
Chemistry
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: http://www.engineeringtoolbox.com/gases-solubility-water-...
Thursday, January 13, 2011 at 1:27am by drwls
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.
Sunday, January 8, 2012 at 8:07pm by CHEMISTRY
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
Wednesday, May 5, 2010 at 7:12pm 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 0.840 M, calculate the equilibrium concentrations of the gases.
Thursday, January 15, 2009 at 9:53pm by Enrique
Science
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
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.
Thursday, April 12, 2012 at 11:11pm by Amanda
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.
Sunday, March 27, 2011 at 7:45pm by Amber
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 ...
Wednesday, February 27, 2013 at 8:45pm by dauntedorange
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 ...
Tuesday, February 14, 2012 at 8:16pm by dauntedorange
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 ...
Monday, November 29, 2010 at 8:42pm by Ivy
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?
Friday, July 25, 2008 at 11:55pm by Randie
chemistry
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 ...
Sunday, January 27, 2008 at 12:16am by drbob222
science
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
Chemistry
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, ...
Sunday, January 13, 2013 at 11:19pm 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
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 -...
Sunday, October 7, 2012 at 9:28pm by DrBob222
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.
Thursday, January 27, 2011 at 7:14pm by Anonymous
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 ...
Sunday, February 28, 2010 at 11:17pm by Tanisha
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
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
science
what is the differences and similarities between gases,liquids and gases
Saturday, February 23, 2008 at 10:28am by yucel
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
Friday, March 16, 2007 at 12:55am by frank
science
under which conditions do real gases most resemble ideal gases
Friday, May 29, 2009 at 5:40pm by Anonymous
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.
Saturday, December 4, 2010 at 3:37am by maggie
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
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 ...
Sunday, January 13, 2013 at 11:45pm 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 ...
Monday, February 18, 2013 at 7:48pm by a Canadian
science
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
Chemistry
http://www.sparknotes.com/chemistry/gases/real/section1.rhtml
Wednesday, May 15, 2013 at 8:37pm by bobpursley
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?
Tuesday, March 29, 2011 at 3:54pm by Debbie
Physics
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
physics
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
chemistry
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
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
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
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
AP CHEMISTRY
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 ...
Monday, March 19, 2012 at 4:12pm by DrBob222
ChEMISTRY (Help please)
discuss the kinetic theory of gases and proof that the equation pv =1/3 mv2
Tuesday, April 13, 2010 at 8:02pm by chemistry
chemistry
http://pages.towson.edu/ladon/gases.html
Sunday, July 31, 2011 at 11:15am by DrBob222
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
cemestry
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
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?
Monday, September 5, 2011 at 1:23am by Lee
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
chemistry/science
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 ...
Wednesday, September 24, 2008 at 5:46pm by DrBob222
Chemistry
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
chelmistry
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
Physics
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
chemistry
why do gases mix in any proportion?
Thursday, September 27, 2012 at 4:56pm by Vlera
chemistry-Gases
I don't understand the question.
Friday, December 10, 2010 at 4:40am by DrBob222
Chemistry
Aren't noble gases nonmetals?
Monday, December 1, 2008 at 8:12pm by Anonymous
chemistry
what is the characteristics of solids, liquids,gases
Tuesday, August 21, 2012 at 5:24pm by ashley
Chemistry-gases
See your other post.
Thursday, March 1, 2012 at 7:26pm by DrBob222
chemistry
how do you differenciate ideal and real gases
Thursday, December 8, 2011 at 9:30pm by anonymouse
chemistry
which solution formed only by gases
Sunday, January 23, 2011 at 7:44am by Anonymous
Chemistry
Explain why the Noble Gases are unreactive
Wednesday, November 17, 2010 at 11:01pm by Hailey
chemistry
Gases contract when temperature is lowered.
Wednesday, April 28, 2010 at 7:36pm by bobpursley
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.
Chemistry
Why is bond energy defined only for gases?
Tuesday, January 3, 2012 at 11:50am by Ethio
Chemistry
Thanks for question 1. So what would the partial pressure be for the gases?
Wednesday, August 10, 2011 at 3:33pm by Neha
Helen
How do you know which elements are solids, liquids, and gases at STP?
Tuesday, June 21, 2011 at 11:04pm by Chemistry
chemistry
do gases have a high or low density?
Thursday, April 10, 2008 at 8:03pm by Maya
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 ...
Saturday, April 2, 2011 at 7:34pm by DrBob222
chemistry
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
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 ...
Tuesday, April 19, 2011 at 9:56pm by elona
chemistry
formula of the gases, atoms to the molecule color, density
Sunday, February 3, 2013 at 6:16pm by DrBob222
chemistry
Have you done this? or can you envision it? Liquid disappears; gases appear.
Wednesday, October 3, 2012 at 3:09pm by DrBob222
Chemistry
what are three chraracteristics of metalloids and 2 characteristics of noble gases
Saturday, February 9, 2008 at 2:00pm by JOSE
Chemistry
Which group of elements are all gases at room temperature?
Tuesday, November 13, 2007 at 2:41pm by Lisa
Chemistry
Which group of elements are all gases at room temperature?
Tuesday, November 13, 2007 at 1:18pm by Lisa
Chemistry
So still all of them are gases! thnx alot
Monday, October 1, 2007 at 4:14pm by Disney man
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?
Sunday, November 13, 2011 at 3:16pm by Michael
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...
Thursday, April 26, 2007 at 7:34pm by Bryan
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?
Tuesday, April 5, 2011 at 6:30pm by Regina
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?
Monday, December 3, 2012 at 6:19am by Frustrated
Chemistry
Describe the density and compressibility of solids versus liquids and gases.
Thursday, May 24, 2012 at 8:42pm by Lily
chemistry
Most gases dissolve more as the temperature of the water decreases.
Monday, December 5, 2011 at 2:16pm by DrBob222
Chemistry
I don't what unknown gases you are talking about but see your post above.
Sunday, November 13, 2011 at 3:16pm by DrBob222
chemistry
hydrogen, and oxygen are gases. when they react, they make steam, a gas.
Monday, September 12, 2011 at 10:04am by bobpursley
chemistry
F2 and Cl2 are gases. Br2 is liquid. I2 is solid.
Wednesday, February 9, 2011 at 5:37pm by DrBob222
CHEMISTRY
Don't all ideal gases have the same volume at STP?
Saturday, October 16, 2010 at 8:23pm by DrBob222
chemistry
Why do gases deviate from ideal behavior at very high pressures
Friday, September 5, 2008 at 2:18pm by jr
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 ...
Wednesday, July 14, 2010 at 8:10pm by Anonymous
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