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April 23, 2014

Search: methane

Number of results: 543

Chemistry
Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 500. mL at 744. torr and 22. C, how many grams of methane are in the sample?
Monday, November 22, 2010 at 3:09am by Marisa

chemistry
Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 100. mL at 754 torr and 21.2 C, how many grams of methane are in the sample?
Tuesday, November 5, 2013 at 12:50am by Anonymous

Chemistry
One mole of methane has a mass of 16.0 grams. 1000cm3 of methane have a mass of 0.174 g. What is the correct expression for calculating the volume of 1 mole of methane?
Saturday, November 3, 2007 at 7:04pm by Lucy

chemistry
A ten gallon methane tank contains 1.243 mol of methane at 74F. Express the volume of tank in liters, the amount of methane in the tank in grams, and the tempature of the tank in kelvin.
Thursday, February 10, 2011 at 12:10pm by Kalyn

chemistry
A sample of methane gas, CH4, was collected over water at 25.0C and 800 torr. The volume of the wet gas is 4.36 L. What will be the volume of the dry methane at standard pressure? Voldry methane=_______L
Sunday, April 10, 2011 at 1:11am by Anonymous

chemistry
A furnace that provides heat by burning methane gas must have the correct mixture of air and fuel to operate efficiently. What is the mole ratio of air to methane gas in the combustion of methane? Hint: Air is 20% oxygen.
Friday, May 27, 2011 at 12:21am by john

PLEASE HELP EARTH SCIENCE EMERGENCY!!!!
If you melt year around ice in the earth (permafrost) in northern climates, it may have natural gas, Methane, trapped underneath. The melting could release the methane into the atmosphere. Methane is a greenhouse gas. This is another positive feedback loop.
Saturday, December 15, 2012 at 11:53am by Damon

chemistry
Calculate the volume of natural gas (methane) required to bring 2.6 L of water to a boil. Assume the initial temperature of the water is 21 C, and the methane is at 1 bar and 25 C. Assume that methane is an ideal gas, the specific heat capacity of water to be constant and ...
Sunday, December 4, 2011 at 11:44pm by Katie

Chemistry
Calculate the volume of natural gas (methane) required to bring 3.9 L of water to a boil. Assume the initial temperature of the water is 39 C, and the methane is at 1 bar and 25 C. Assume that methane is an ideal gas, the specific heat capacity of water to be constant and ...
Friday, December 2, 2011 at 4:03pm by LaurenB

Chemistry
It has been proposed that wood alcohol, CH3OH, a relatively inexpensive fuel to produce, be decomposed to produce methane. Methane is a natural gas, commonly used for heating homes. is a decomposition from wood alcohol to methane and oxygen thermodynamically feasible at 25 ...
Wednesday, April 7, 2010 at 4:13pm by Anmol

Chemistry
How many kilograms of water at 15oC can be heated to 95oC by burning 143 grams of methane, CH4, assuming that 100% of the heat is used to heat the water. The heat of combustion of methane is 891 kJ per mole of methane. (The specific heat of water is 4.184 J/goC.) I am not sure...
Monday, January 30, 2012 at 8:35pm by Hannah

Physics
Suppose a distant world with surface gravity of 7.12 m/s2 has an atmospheric pressure of 7.48 104 Pa at the surface. (a) What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean?________N (b) What is the weight of a 10....
Wednesday, November 7, 2012 at 10:01pm by Amelia

PHYSICS PLEASE HELP
Suppose a distant world with surface gravity of 7.12 m/s2 has an atmospheric pressure of 7.48 104 Pa at the surface. (a) What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean?____________N (b) What is the weight of a...
Thursday, November 8, 2012 at 9:17pm by AMY

Chemistry
Graham's Law of effusion: rate methane/ratefluorine= sqrt(molmassF2/molmass methane)
Saturday, May 22, 2010 at 7:21pm by bobpursley

chemistry
a sample of methane contain 4.5x10 the power of24 h atom.calculate the mass methane
Saturday, June 23, 2012 at 2:19am by a

PHYSICS
Suppose a distant world with surface gravity of 7.12 m/s2 has an atmospheric pressure of 7.48 104 Pa at the surface. (a) What force is exerted by the atmosphere on a disk-shaped region 2.00 m in radius at the surface of a methane ocean? ________N (b) What is the weight of a 10...
Thursday, November 8, 2012 at 10:32am by Amy

chemistry
In a methane fuel cell, the chemical energy of the methane is converted into electrical energy instead of heat that would flow during the combustion of methane. Using the half-reactions and reduction potentials given below a) Write a net equation for the reaction. b) Calculate...
Wednesday, August 3, 2011 at 12:18pm by Vt

chemistry
In a methane fuel cell, the chemical energy of the methane is converted into electrical energy instead of heat that would flow during the combustion of methane. Using the half-reactions and reduction potentials given below a) Write a net equation for the reaction. b) Calculate...
Wednesday, August 3, 2011 at 2:06pm by Vt

chem
Methane is oxidized to water and carbon dioxide in a process, in which 10 % of the methane is converted to CO and 20 % is converted to formaldehyde. What is the yield of the process? How much methane do you need to produce a kg of formaldehyde? How much oxygen is needed in the...
Wednesday, November 24, 2010 at 12:18am by Anonymous

Chemistry
Natural gas is almost entirely methane, CH4. What volume of natural gas at 20 C and 1.00 atm pressure is required to heat one quart of water from 20 C to 100 C? The density of methane at 20 C is 0.665 g/mL. The reaction for the combustion of methane is CH4 (g) + 2 O2 (g) -->...
Tuesday, March 18, 2014 at 11:40pm by Anonymous

Chemistry
A mole of methane reacts with 64g of oxygen at 1 atm, 425 K. There are two ways in which methane can react with oxygen. It can either form water vapor and carbon dioxide or water vapor and carbon monoxide. After reaction the final gas density is 0.7282 g/L. What is the ...
Thursday, November 18, 2010 at 11:24pm by Natalie

Chemistry
Hi, i would like to know how hydrogen can be manufactured from methane using a nickel catalyst. What must be added to methane in the reaction? +Ni CH4 + ??? -----> H2 + ???
Wednesday, September 23, 2009 at 1:02am by Monica

chemistry
A bacterial culture isolated from sewage produced 35.5 mL of methane, CH4, at 31oC and 1 atm. What is the volume of this methane at standard temperature and pressure?
Tuesday, April 17, 2012 at 11:08pm by Anonymous

Chemistry
What is the enthalpy change if 25.0 g of methane are burned? 890kJ of heat released for every mole of methane that reacts. CH4 + 2O2 = CO2 + 2H2O
Tuesday, March 18, 2014 at 5:31pm by Tracy

Chemistry
If 6.0 liters of methane react with 12.0 liters of oxygen according to the equation CH4 + 2O2 → CO2 + 2H2O, and the temperature and the pressure are kept constant, which of the following is true? a. All the methane and oxygen react. b. Oxygen is in excess. c. Methane is ...
Friday, September 21, 2012 at 9:44pm by Helen

chem help
The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are released, how many grams ...
Monday, April 13, 2009 at 3:42pm by eve

chemistry
Compare the chemical composition of methane and ethanol to carbon dioxide. Which one can be said to be the complete oxidation of glucose? I thought is was methane but I got it wrong can you explain please.
Wednesday, August 4, 2010 at 3:40pm by sandy

Chemistry
A 6.0g of methane decomposes into 4.5g of Carbon adn 1.5g of Heydrogen. Determine the empirical formula of methane.
Thursday, February 10, 2011 at 1:02pm by Cecille

Chemistry
There is a balloon filled with methane,CH4. If the mass of the methane is 68.34g, what is the volume of the balloon at 0.805 atm and a temperature of -10*C?
Friday, November 11, 2011 at 6:43pm by Mindy

chemistry:URGENT
How to convert (a)ethane to propanone (b)propanone to ethane (c)isobutane to propanone (d)methane to benzene (e)benzene to methane (f)ethyne to methane (g)propanone to benzene (h)ethene to propene (i)Propan-2-ol to Propan-1-ol using:oxidation,reduction,halogenation,combustion,...
Monday, March 1, 2010 at 7:46am by sashank

Chem
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to form gaseous H2O and CO2. What Volume (in L) of methane is needed to produce 3329 kJ of heat for methane gas at 36 oC and 9.15 atm pressure? I got 20.7...
Friday, November 16, 2012 at 7:32pm by Anonymous

Chem
Use the table to calculate an approximate enthalpy or heat of reaction for the combustion of one mole of methane gas (CH4) to form gaseous H2O and CO2. What Volume (in L) of methane is needed to produce 3329 kJ of heat for methane gas at 36 oC and 9.15 atm pressure? I got 20.7...
Friday, November 16, 2012 at 8:24pm by Anonymous

chemistry
1)The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 0.718 grams of methane are reacted, how many grams of water vapor are produced? B. If 1.621 grams CO2 are released, how many ...
Thursday, January 7, 2010 at 9:59pm by eng

Chemistry
The burning of methane in oxygen is a highly exothermic reaction. Yet a mixture of methane and oxygen gas can be kept indefinitely without any apparent change. Can someone give me an explanation behind this?
Tuesday, May 27, 2008 at 7:10pm by Donna

chemistry
You need to redo your typing job, especially for "carve", H2 S and H2 4. None of that makes sense to me. Also, I don't see methane anywhere in the equation and nothing that tells me the percent S in methane.
Tuesday, February 9, 2010 at 5:02pm by DrBob222

Chemistry
there are ___ molecules of methane (CH4) in 0.123 moles of methane? a. 16 b. 0.773 c. 2.46 x 10 -2 d. 7.40 x 10 22 e. 6.02 x 10 23
Sunday, November 1, 2009 at 9:37pm by Pandorah

chemistry.
Methane, CH4 burns in oxygen gas to form carbon dioxide and water. How many moles of carbon dioxide will be formed from 8.0g of methane?
Monday, September 28, 2009 at 3:14pm by Denmark

chemistry
If 8.00g of methane is burned with 6.00g of oxygen. How much methane,oxygen,carbon dioxide,and water remain after the reaction is complete in grams?
Monday, November 12, 2012 at 11:28pm by DEE

Chemistry
Methane has one carbon and by mass there are three grams of carbon for every gram of hydrogen. How many hydrogen atoms does methane molecule have show work
Wednesday, February 15, 2012 at 8:33am by Bay

chemistry
A 6.0 L flask contains a mixture of methane, argon and helium at 45 degrees C and 1.75 am. If the mole fractions of helium and argon are 0.25 and 0.35, respectively, how many molecules of methane are present?
Tuesday, March 1, 2011 at 8:23pm by Katie

Chem
The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to a liquid at -161C. Water becomes a gas at 100C. What could account for the differences?
Saturday, March 5, 2011 at 5:53pm by Anonymous

chemistry
The volume of a sample of dry methane (CH4) collected at 25C was 7.00 L. The total pressure was 688 torr. How many moles of methane were collected? Write answer as X moles in the blank.
Friday, October 26, 2012 at 10:13pm by Victoria

chemistry
Methane gas is burned releasing Carbon Dioxide into the atmosphere. How much CO2 (g) is released if 78.5 Liters of Methane is burned? CH4 + O2 --> CO2 + H2O
Wednesday, May 1, 2013 at 9:35pm by kate

Chemistry
balance the equation methane+oxygen>>carbon dioxide + water. then, how many moles of methane is in 32 grams? Then, use the mole ratio on the balanced equation coefficents to answer the questions.
Tuesday, November 9, 2010 at 7:24pm by bobpursley

chem help
A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?
Tuesday, November 30, 2010 at 8:24pm by annonymous

chemistry help!
A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?
Wednesday, December 1, 2010 at 10:26am by samantha

chemistry
the molecules water (H2O) and methane (CH4) hav similar masses, but methane changes from a gas to a liquid at -161 degees C. Water becomes a gas at 100 dgrees C. What could account for the difference?
Thursday, July 14, 2011 at 3:31pm by Anonymous

Chemistry
One proposed design for a Mars rover uses a methane gas fuel cell as its power supply. The methane fuel can be made on Mars using a chemical reaction that has been known for over 100-a the Sabatier methanation reaction: C02(g) + 4H2(g)<--> CH4(g) +2H2O(g) Enthalpy change...
Sunday, November 28, 2010 at 3:56pm by Mary

chem
Elemental Sulfur can be formed through the combustion of Hydrogen Sulfide (found in Methane gas) give in equation H2 S +O--->S + H2 4 tell how much sulfur is made from 250 grams of methane
Tuesday, February 9, 2010 at 8:44pm by nycole

chemistry
elemental sulfur can bea formed through the combustion of hydrogen sulfide (found in methane gas) carve in equation; H2 S +O2----S + H2 4 tell how much sulfur is made from 250 grams of methane
Tuesday, February 9, 2010 at 5:02pm by nycole

chemistry
What happens when you have a mixture of CO2 hydrate and methane hydrate when the temperature is 2.5 C and the pressure is 2 MPa. Does the methane come off and the CO2 hydrate remain
Sunday, March 20, 2011 at 4:25pm by Wale

chemistry (science)
What volume of methanol is formed if 2.8610^11 of methane at standard atmospheric pressure and 25 degree celcius is oxidized to methanol? The density of CH3OH is 0.791g/mol . Assume that the oxidation of methane to methanol occurs in a 1:1 stoichiometry.
Monday, February 15, 2010 at 4:52pm by beeni

Chemistry
Larger amounts of methane, in the form CH4*6H20 is trapped at the bottom of the ceans in Clatharate compunds (formed when small molecules occupy the empty spaces in cage like structures). Calculate the mass of methane gas trapped with in one Kg of the hydrate
Sunday, November 20, 2011 at 3:56am by Devin Boutte

Chemistry
One mole methane is completly burned in xcess oxygen. If 8.90x10^3kj of heat are given off from theis reaction, calculate the heat given off for 1.44g of methane.
Monday, June 14, 2010 at 6:30pm by Adeola

Chemistry
The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to liquid at -161 degrees C. Water becomes a gas at 100 degrees C. what could account for the difference?
Sunday, April 11, 2010 at 7:13pm by Jack

Chemistry - please answer
You have the balanced equation: first figure the amount of moles of ammonia, oxygen, and methane in the mass used. You need 1.5 times the methane amount of Oxygen. So which is the limiting reactant? Just looking at it, I suspect it is O2, (working it in my head).
Tuesday, September 23, 2008 at 8:34pm by bobpursley

Chemistry
In an experiment, you fill a heavy walled 5.00 L flask with methane gas, CH4. If the flask contains 7.13g of methane at 19 degrees C, what is the gas pressure. Use the ideal gas law. Can some one help me get started on this problem please
Tuesday, October 23, 2007 at 12:17am by Lauren

CHEMISTRY: URGENT
30cm^3 of a mixture of methane and ethane were mixed with 100cm^3 of oxygen at ordinary temperature and pressure and exploded. After cooling the residual gases occupied 61.5cm^3. Find the percentage by volume of each gas in the mixture, methane (CH4) and ethane(C2H6).
Monday, October 29, 2012 at 10:48pm by LC

chemistry
Suppose you have a mixture of hydrogen and methane (CH4) gases that are at equilibrium. What is the ratio of the average speed of the methane (CH4) relative to the hydrogen ? Express the answer as a fraction (e.g. 0.621). I know that im suppose to use the e=1/2mv2 but i don't ...
Sunday, October 10, 2010 at 1:29am by Jazmin

Chemistry
Write the balanced equation. CH4+2O2 >> CO2 + 2H20 for each mole of carbon dioxide produced, one mole of methane, and two moles of oxygen is used. Moles methane: .007/(16.04)
Monday, October 3, 2011 at 8:48pm by bobpursley

Chemistry
CH4+2O2-->CO2+2H2O How many Liters of carbon dioxide will be produced at 24 degrees celcius and 725mm Hg from the combustion of a 15.0 gallon tank of methane? How much energy is associated with combusting a 15.0 gallon tank of methane?
Wednesday, April 18, 2012 at 8:47pm by Linda

Astronomy
Which of these gasses are outgased by our volcanic eruptions? a)oxygen, methane,ammonia b)carbon dioxide, water vapor, oxygen c)ammonia, water vapor, oxygen d) water vapor, methane, carbon dioxide e)helium, carbon dioxide, methane
Sunday, September 26, 2010 at 2:46pm by Jerrika

chem
Elemental Sulfur can be formed through the combustion of Hydrogen Sulfide (found in Methane gas) give in equation H2S+O--->S + H2 4 tell how much sulfur is made from 250 grams of methane 2 H2S + O2---->2S +2 H2O s=32
Tuesday, February 9, 2010 at 8:56pm by nycole

chemistry
a typical alberta home heated with natural gas assume methane CH4 (g) consuems 2.00ML of natural gas during the month of December. What volume of oxygen at SATP is required to burn 2.00ML of methane measured at 0 degrees and 120 kPa? the answer is 2.62ML but i do not know how ...
Friday, March 23, 2012 at 1:12am by anita

10th grade
I am sure this one has been answered recently. calculate the molecular mass for methane (CH4) = 16 the percentage of C in 10 g of methane wil be the same as the percentage of C in the molecular mass so 12x100%/16
Monday, September 27, 2010 at 5:00am by Dr Russ

chemistry
A closed container has a mixture of methane, CH4, ethane C2H6, and propane C3H8. If 12.5 g of methane, 36.0 g of ethane, and 14.0 g of propane have a total pressure of 890. mm Hg, what is the partial pressure of each of the gases in the container?
Sunday, April 15, 2012 at 7:08pm by josh

bilogy
methane which is composed of carbon and hydrogen, lacks fuctional groups and is a gas at room temperature.upon replacing one of the hydrogen atoms with a hydroxyl group, methane is converted to a liquid called methanol at room temperature. please explain to me the reason ...
Tuesday, December 14, 2010 at 9:05pm by erika

chemistry
a.Write the balanced chemical equation for the reaction of methane and sulfur. (Type your answer using the format CO2 for CO2. Use the lowest possible coefficients.) 1CH4 + 4S --> 1CS2 + 2H2S (b) Calculate the theoretical yield of carbon disulfide when 240. g of methane is ...
Tuesday, January 27, 2009 at 8:42pm by lyne

CHEMISTRY
a gas mixtuer consists of equal masses of methane(molecular weight 16.0) and argon (atomic weight 40.0) if the partial pressure of argon is 26.6 kPa, what is that of methane in the same units? 10.7 26.7 66.7 34.1 I am going with 26.7 Do you agree and why please Thanks Andy
Tuesday, May 11, 2010 at 9:03pm by Andy

Science
BP -164C ΔHvap 8.136 kJ/mol sg 2.205 J/gC MP -182C ΔHfus 0.928 kJ/mol sl 2.41 J/gC Using the data above for methane, CH4, calculate the heat needed to convert 150. g of liquid methane at -175C to a gas at 25C.
Thursday, October 28, 2010 at 11:29pm by Joseph

Chemistry
Log on to www.google.com and type in formula methane and see what it is. type in mercury and see. type in ethanol and see. type in ammonia and see. An element is just one material; i.e., it may not have anything connected to it. Methane, for example, is CH4. That is a compound...
Tuesday, November 6, 2007 at 8:59pm by DrBob222

Chemistry
balance it. then look at the mole ratio of methane to CO2. How many moles of methane do you start with? Using the mole ratio, how many moles of CO2 do you get? How many grams is that?
Tuesday, September 21, 2010 at 1:26pm by bobpursley

chemistry
ionic componuds tend to have higher boiling points than covalent compounds . both ammonia NH3 and methane CH4 are covalent compounds but yet the boiling point of ammonia 130C is higher than methane. what might account for this difference please help thank you
Wednesday, April 1, 2009 at 10:47am by teri

chem
The real equation should be something like this: H2S + O2 -> S + H2O Balancing the equation: 2 H2S + O2 -> 2S + 2H2O The question does not mention anything about methane, CH4. Also, The sulfur in the equation (mistaken as methane, i suppose) is one of the product, not ...
Tuesday, February 9, 2010 at 8:44pm by Rose

CHEMISTRY
carbon monoxide can be prepared by the reaction of steam with methane. CH4(g) + H2O(g) = CO(g) + 3H2(g) If 10g of methane is allowed to react with 10g of steam which of the reactants would be described as limiting. What is the theoretical yield of carbon monoxide if 10g of ...
Monday, April 4, 2011 at 7:24pm by Anonymous

Chemistry
0.852 x 16 = ?? for the methane part. 0.148 x 30 = ?? for the ethane part. mass methane part + mass ethane part = effective molar mass of the mixture.
Thursday, August 4, 2011 at 6:39pm by DrBob222

Chemistry
Consider the following reaction: CH4 +2O2 -> CO2 + 2H2O. Delta H = -891 kJ Calculate the enthalpy change for each of the following cases: a. 1.00 g methane is burned in excess oxygen b. 1.00 x 10^3 L methane gas at 740. torr and 25 *C is burned in excess oxygen
Monday, October 11, 2010 at 1:04am by Anonymous

Chemistry
In a methane molecule (CH4) there are 4 single covalent bonds. In an octane molecule (C8H18) there are 25 single covalent bonds. How does the number of bonds affect the dispersion forces in samples of methane and octane? Which compound is a gas at room temperature? which is a ...
Tuesday, March 17, 2009 at 4:55pm by Taylor

Chemistry
HELP! I am struggling on this question. I think I may or may not have it. Why does Methane has a tetrahedral shape? The Valence-shell electon pair repulsion theory applies which predicts that the shape of a molecule by placing the electron pairs on a central atom as far apart ...
Saturday, February 9, 2008 at 4:12pm by Tim

chemistry
Dr bob can you help with my last question for tonights home work please A gas mixture consists of equal parts of methane(molecular weight 16.0) and argon (atomic weight40.0). if the partial pressure of argon is 26.6 kPa what is that of methane in the same units? 10.7 26.7 66.7...
Tuesday, May 11, 2010 at 9:29pm by Andy

Chemistry
a)What mass of water is produced from the complete combustion of 2.3010−3 g of methane? b)What mass of oxygen is needed for the complete combustion of 2.3010−3 g of methane? This is the unbalanced equation given: CH4+O2->CO2+H2O
Tuesday, September 21, 2010 at 1:29pm by Cindy

Chemistry(science)
I think you mean "methane"? If it is... Methane's chemical formula is CH4. To get the moles of methane, we first get its molar mass by adding the masses of C and H. There are C atoms and 4 H atom: CH4 = 12 + 4*1 = 16 g/mol Then we divide the given mass by the molar mass: 0.032...
Monday, August 12, 2013 at 8:03pm by Jai

Chemistry
15.0 moles of gas are in a 6.00L tank at 298.15K. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300 L^2*atm/mol^2 and b=0.0430 L/mol. I found the idea gas pressure to be 61.2 atm by...
Thursday, September 13, 2012 at 7:38pm by Lori

Ap Chemistry
Hydrogen gives off 120. J/g of energy when burned in oxgyen, and methane gives off 50. J/g under the same circumstances. If the mixture of 5.0 g of hydrogen and 10. g of methane is burned, and the heat released is transferred to 50.0 g of water at 25.0 degress Celsius, what ...
Saturday, October 17, 2009 at 6:51pm by Shawn

Chemistry
Could you help me with this question: A molecule of chloroform, CHCl3, has the same shape as a molecule of methane CH4. However, methane's boiling point is -164 degrees celcius ans chloroform's boiling point is 62 degrees celcius. Explain the difference between the two boiling...
Monday, March 2, 2009 at 8:45pm by Sabrina

Please help me!!! Chemistry
Multiple choice When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction? a)40 b)22 c)58 D)18
Tuesday, December 6, 2011 at 10:39pm by Anonymous

Chemistry
A)What mass of carbon dioxide is produced from the complete combustion of 7.0010−3 g of methane? B)What mass of oxygen is needed for the complete combustion of 7.0010−3 g of methane?
Monday, October 3, 2011 at 8:48pm by Hannah

chemistry
http://en.wikipedia.org/wiki/Methane
Monday, January 14, 2013 at 2:04am by DrBob222

Science, Physical Chemistry
Try the following: The pressure on the bubble at a depth of 10 m is Patm + (density of water x gravity x height). 101325 Pa + (1000 kg/m^3 x 9.8 m/s^2 x 10 m) = ?? (The density of water is very near 1000 km/m^3 at 4 degrees C. 5 degrees C won't change it very much.) The volume...
Tuesday, March 25, 2008 at 12:50pm by DrBob222

Chemistry
A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume and at the same temperature as the original ...
Sunday, November 16, 2008 at 1:49pm by Fred

chemistry
Now "react" methane (CH4) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). Start with one molecule of methane and one molecule of oxygen. Continue reacting molecules of CH4 and O2 until all the reactant atoms have been used to form products. Summarize what ...
Friday, August 1, 2008 at 2:12pm by kayla

Chemistry
Methane gas (carbon tetrahydride) reacts with oxygen by combustion: CH4 + 2O2 -> CO2 + 2H2O a.)How many moles of methane are needed to produce 3.5*10-4 moles of carbon dioxide? b.)How many moles of oxygen are needed to react form the 3.5*10-4 moles of carbon dioxide? c.)How...
Sunday, November 3, 2013 at 7:07pm by Kelsi

Chemistry
g C = 3*gH So C represents 3/4 mass methane. H represents 1/4 mass methane3. 0.75x = 12 x = 16; mass methane is 16 1/4 *16 = 4 = mass H atoms which is 4 H atoms at 1 each.
Wednesday, February 15, 2012 at 8:33am by DrBob222

chem
I don't know what $ means in relation to this problem. If you meant to type 4, it is 4 because C is in column IV (or 14 depending upon the system your prof is using) which means it has an oxidation (valence) of 4. H is valence of 1 so the formula for methane is CH4. Must the C...
Sunday, November 28, 2010 at 12:51pm by DrBob222

Chemistry
Given PV=nRT and the following equation: CH4+2O2=CO2+2H2O Calculate the maximum number of ML of CO2 at 750 torr and 295.15 degrees K that can be formed from above conbution of methane ( CH4 ) if 450 mL of methane at 705 torr and 283.15 degrees K are mixed with 725 mL of O2 at ...
Wednesday, March 14, 2012 at 7:09pm by Chantel

Chemistry
A mixture of ethyne gas (C2H2) and methane gas (CH4) occupied a certain volume at a total pressure of 16.8 kPa. When the sample burned, the products were CO2 gas and H2O vapor. The CO2 was collected and its pressure found to be 25.2 kPa in the same volume and same temperature ...
Monday, March 21, 2011 at 3:22pm by Kim

Please help me!!!!
2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: What is the ...
Wednesday, December 19, 2012 at 6:54pm by Taylor

Chem Help please!!!!!
2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: What is the ...
Wednesday, December 19, 2012 at 6:31pm by Taylor

science
(C) This question is based around methane which is odourless and colourless, certainly when compared with 'town gas' its predecessor. Thus when local gas supplies were changed over from town gas to methane (usually from gas fields) a sulfide or mercaptan was added. You might ...
Friday, November 14, 2008 at 6:52am by Dr Russ

Chem- REALLY URGENT!!!
2. Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation: CH4 + NH3 + O2  HCN + H2O You have 8 g of methane and 10 g of ammonia in excess oxygen. Answer the following questions: What is the ...
Wednesday, December 19, 2012 at 6:38pm by Taylor

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