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April 20, 2014

Search: Gaseous carbon monoxide reacts with hydrogen gas to form gaseous methane ({\rm CH}_{4}) and liquid water

Number of results: 6,073

physic
b) It is done by Carbon dating. Carbon is the basic basic building block of life and has an amazing memory. Rays of the Sun which are radioactive enter our atmosphere and collide with Nitrogen atoms to create the radioactive isotope, Carbon-14. We have both Carbon-12 and ...
Saturday, April 16, 2011 at 6:55am by justin

Math
The half-life of carbon-14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon-14 is present at time 0 yr, or x=0. Write the equation that expresses the percentage of carbon-14 remaining as a function of time.
Tuesday, October 11, 2011 at 7:58pm by Hanna

science
When carbon in the form of diamond is burned to produce CO2, more heat is given off than when carbon in the form of graphite is burned. What form of carbon is more stable under ordinary conditions? What bearing does this conclusion have on the origin of diamonds?
Tuesday, October 25, 2011 at 9:05pm by Sheryl

Chemistry
Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15C. ...
Saturday, May 31, 2008 at 5:55pm by Alex

CHEMISTRY
hydrogen reacts with nitrogen to produce ammonia. 3H2(g)+ N2(g) = 2NH3(g) Determine how much ammonia would be produced if 100g of hydrogen reacts?
Monday, April 4, 2011 at 7:21pm by Anonymous

Carbon
#1 where and in what form does carbon enter long term stores? It enters long-term stores in the form of Carbon dioxide, and is found in intermediate and deep ocean waters. On land, it is found in coal-deposits and in oil and gas deposits. #2 where and in what form does carbon ...
Tuesday, July 6, 2010 at 11:48pm by Amanda

chemistry
carbon -12 and carbon -14 are the exact same atom isotopes of the same atom completely different atoms the same except that carbon -14 has 2 extra electrons
Monday, October 11, 2010 at 12:44pm by kaiya

Chemistry and Science
carbon dioxide is a "greenhouse" gas in that it absorbs energy from the sun, causing heating of the atmosphere and eventually global warming. carbon dioxide is produced from the combustion of carbon-containing fuels such as coal (mainly carbon), natural gas (mainly CH4), and ...
Friday, February 17, 2012 at 1:05am by Rose Bud

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 359.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 11:27pm by Please Help Me!!!!!!!!

Science
When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When the gas reacts with ...
Tuesday, November 10, 2009 at 2:08pm by anonymous

Chemistry
Calcium carbonate reacts w/stomach acid according to the following chemical equation. CaCO3+2HCl(aq)-> CaCl2(aq)+H2O(l)+CO2(g) A. Balance the eqaution B. Tums is one commercially sold antacid that contains CACO3. If Tums is added to 20.0ml of 0.400 M HCl, how many grams of ...
Tuesday, December 14, 2010 at 9:53pm by Tony

Shelled marine organisms
How do the shelled marine organisms contribute to the carbon cycle? They contribute to the carbon cycle by releasing carbon dioxide back into the atmosphere by converting carbohydrates and oxygen into carbon dioxide and water.
Tuesday, July 6, 2010 at 11:33pm by Amanda

Chemistry
How long will you let it react? It reacts with one mole to neutralize the COOH group of aspirin and it reacts with another mole to hydrolyze the ester. The hydrolysis of the ester takes a little time.
Tuesday, January 18, 2011 at 8:48pm by DrBob222

college
Use the following information to identify element A and compound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790 torr and a temperature of 15 C. When ...
Monday, November 2, 2009 at 10:52am by Ada

chem-help
Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15C. ...
Wednesday, December 3, 2008 at 11:54pm by Anne

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:49pm by Amy

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:50pm by Amy

Science
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Wednesday, March 13, 2013 at 11:51pm by Amy

chem
A piece of solid carbon dioxide, with a mass of 6.2 g, is placed in a 4.0 L otherwise empty container at 21C. ( a) What is the pressure in the container after all the carbon dioxide vaporizes? atm (.86 atm) (b) If 6.2 g solid carbon dioxide were placed in the same container ...
Saturday, November 17, 2007 at 10:01pm by mel

Chemistry
A sample of gaseous PCl5 was introduced into an evacuated flask so that the pressure of pure PCl5 would be 0.54 atm at 425 K. However, PCl5 decomposes to gaseous PCl3 and Cl2, and the actual pressure in the flask was found to be 0.85 atm. Calculate Kp for the decomposition ...
Wednesday, February 13, 2013 at 7:09pm by Margaret

Chemistry
I need some help with net ionic equations. I can do single replacement, double replacement, etc., but I don't get stuff like gas forming-reactions or the trends when stuff like a strong acid and water are the reactants. Examples: 1. Moist sodium hydroxide reacts with carbon ...
Saturday, November 7, 2009 at 5:24pm by Nikki

chem - asap
The Cl2 reacts with water to form the Cl^- and OCl^-. It's the Cl^- that reacts with the Ag^+ to form AgCl(s).
Sunday, October 2, 2011 at 12:18am by DrBob222

ecology
How does carbon end up in the ground? How does carbon enter the food chain
Tuesday, October 14, 2008 at 6:03pm by becca

chemistryy
What is the amount of energy released when a carbon carbon single bond is broken?
Thursday, August 13, 2009 at 2:33pm by chrissy

chem
What is the amount of energy released when 3 carbon carbon triple bonds are broken?
Wednesday, August 19, 2009 at 3:03pm by needs help

chem
What is the amount of energy released when 3 carbon carbon triple bonds are broken?
Monday, August 31, 2009 at 1:28pm by chrissy

chemistry
what are carbon chains that are between twelve and twenty carbon atoms long?
Tuesday, January 5, 2010 at 2:41pm by christina

chemistry
A sample of carbon dioxide has a mass of 47.4 g. How many carbon atoms are present?
Wednesday, January 20, 2010 at 7:51pm by w

chemistry
How many carbon(C) atoms are present in 30. mol of carbon? 1.8*10^25
Sunday, February 5, 2012 at 1:24pm by kr

Chemistry
How many carbon atoms are there in a diamond (pure carbon) with a mass of 50 ?
Saturday, September 8, 2012 at 8:51pm by Tammy

chem
The question you must answer is, does the change form a new chemical compound or is it the same material after the change as before the change? For example, 1. The sodium is oxidized to Na2O because it reacts with oxygen in the air. Something new has been formed; therefore, ...
Tuesday, March 1, 2011 at 9:44pm by DrBob222

Science
What kind of carbon-carbon bonds are found in alkane molecules? Is the answer Pentane
Saturday, October 29, 2011 at 8:43pm by Shirley

chem
what is the appropriate hybridization for the carbon atom in CO2? the explanation I was given is 2 electron groups around the center atom carbon suggest sp hybridization. the 2 unhibridized p orbitals on carbon form the 2 pi bonds. My question is why pi bonds? Isn't it ...
Monday, November 24, 2008 at 2:20am by Natash

physics
Second question says two carbon atoms are joined by a spring-like carbon-carbon bond. The potential energy stored in the bond has the value you calculated from first question if the bond is stretched 0.050 nm. What is the bond's spring constant? What is the formula for this?
Monday, November 30, 2009 at 6:35pm by Julia

physics
Second question says two carbon atoms are joined by a spring-like carbon-carbon bond. The potential energy stored in the bond has the value calculated from first question if the bond is stretched 0.050 nm. What is the bond's spring constant? What is the formula for this?
Monday, November 30, 2009 at 6:35pm by Julia

Chemistry
The boiling point of another member of this homologous series was found to be 309 K. What is the likely molecular formula for this compound? How many carbon atoms would you expect this new compound to have if its boiling point is between that of a four-carbon alkane and that ...
Monday, March 14, 2011 at 10:20pm by Alison

General Chem
At a given temperature and pressure, the volume of a gaseous sample is directly proportional to the moles of gas (volume = C * moles, where C is a constant). Assuming that the tempreature and pressure is the same for the reaction of magnesium with HCl(aq) and zinc with HCl(aq...
Monday, March 11, 2013 at 7:07pm by Amy

CHEMISTRY
AT 25 DEGREES CELSIUS THE STANDARD ENTHALPY OF COMBUSTION OF GASEOUS PROPANE IS -2219.0 KJ PER MOLE OF PROPANE AND THER STANDARD ENTHALPY OF GASEOUS PORPYLENE IS -2058.3 KJ PER MOLE OF P[ROPYLENE. wHAT IS THE STANDARD ENTHALPY CHANGE FOR THE FOLLOWING REACTION C3H6 + H2 ---C3H8
Saturday, July 23, 2011 at 11:32am by Anonymous

organic chemistry
The CH3, H, and OH group are connected to the structure I tried to type in the middle of this mess. The top CH3 goes with the fourth carbon (a covalent bond) from the left, the OH goes with the third carbon from the left, and the hydrogen goes with the fifth carbon from the ...
Thursday, January 24, 2013 at 8:21pm by Devron

chemistry
Please help with this problem =) The combustion of liquid chloroethylene, C2H3Cl, yields carbon dioxide, steam, and hydrogen chloride gas. I. write a balanced equation for the reaction (I sorta get this part) II. How many moles of oxygen are required to react with 35.00g of ...
Thursday, October 9, 2008 at 1:33pm by Jack

ChemB
measurements of carbon 14 taken from linen wrappings of the book of isaiah from the dead sea scrolls indicate that the scrolls contain 79.5% of the carbon 14 expected in living tissue. how old are these scrolls if the half life of carbon 14 is 5730 years? All radioactive decay...
Sunday, January 22, 2012 at 9:28pm by L.Bianchessi

chemistry
What is the maximum number of hybrid orbitals a carbon atom can form? Is it 4 because carbon has 4 valence electrons? yes.
Saturday, December 16, 2006 at 12:53pm by Carter

AP Chem
Look at carbon #2 from the left. Doesn't that carbon have four separate groups attached?
Sunday, December 16, 2007 at 9:49pm by DrBob222

chemistry
How many kilojoules of energy are released from the carbon carbon single bonds when glucose (C6H12O6) is burned??? thanks
Sunday, September 6, 2009 at 5:06pm by jake

chemistry
Draw all possible structures of an organic compound with 6 carbon atoms that has a 4 carbon chain
Thursday, October 28, 2010 at 10:03pm by Chioma

chemistry
What is the hybridization on carbon no. 1 and carbon no. 2? and the no. sigma bonds ? C7H10
Friday, December 7, 2007 at 12:27am by Lu

chemistry
RANK THESE COMPOUNDS BY THE LENGTH OF THE CARBON-CARBON BOND
Monday, January 14, 2013 at 7:41pm by KEITH

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 176.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 5:42am by cuie

science
Start with a balanced equation, we will assume that the product is MgO Mg + O2 -> MgO which we need to balance 2Mg + O2 -> 2MgO so 1 mole of O2 reacts with 2 moles of Mg so 2 moles of O2 reacts with 4 moles of Mg hence 2.5 moles of O2 reacts with ?? moles of Mg
Wednesday, March 9, 2011 at 10:34am by Dr Russ

Chemistry
Hydrochloric acid reacts with Magnesium to form Magnesium Chloride and Hydrogen gas. deltaH= -442kJ If 15mL of 1.0M HCl reacts with .3g of Mg, how many L of H2 are produced? How much heat is produced?
Wednesday, December 8, 2010 at 11:49am by Taylor

Advanced Chem
How can one determines whether there is a free rotation around a carbon-carbon triple bond?
Sunday, September 21, 2008 at 6:31pm by Idiota

chem.
What is the amount of energy released when a carbon carbon single bond is broken? how do i even figure this out?
Thursday, August 13, 2009 at 1:32pm by needs help

chem
How many kilojoules of energy are released from the carbon carbon single bonds when Glucose (C6H12O6) is burned? how would i do this?
Friday, August 21, 2009 at 4:22pm by chrissy

chemistry
what is a simplified way of representing an organic compound by showing only rh carbon carbon bounds
Tuesday, December 8, 2009 at 7:52pm by shelly

Physics
At what distance from a carbon nucleus is the electric potential 2.1 V? Carbon atoms have 6 electrons in the atomic shell.
Wednesday, February 24, 2010 at 8:12pm by Susie

physics
At what distance from a carbon nucleus is the electric potential 3.8 V? Carbon atoms have 6 electrons in the atomic shell.
Monday, April 26, 2010 at 12:43am by saw

chemistry
What are the two properties of carbon which lead to the huge number of carbon compounds we see around us ?
Monday, February 25, 2013 at 12:19am by Vipin

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 379.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 5:52am by Joel

chimistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 100.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 1:23pm by School girl

Chemistry
to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 200.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of the ...
Saturday, December 15, 2012 at 1:01am by Ankur

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 390.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 9:40pm by mike

help
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 478.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 11:58am by Anonymous

chemsitry
c. Use the enthalpy diagram provided above and apply Hesss Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following values: The standard enthalpy of formation of gaseous carbon dioxide is -393.5 kJ/mol The ...
Saturday, October 23, 2010 at 2:36pm by Nora

chemistry
Methanol (CH3OH) is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2 H2(g) CH3OH(g) (a) How many moles of each reactant are needed to produce 4.83 102 g CH3OH? CO mol H2 mol (b) ...
Tuesday, April 3, 2012 at 9:07pm by Cat

chemistry
Methanol (CH3OH) is used in the production of many chemicals. Methanol is made by reacting carbon monoxide and hydrogen at high temperature and pressure. CO(g) + 2 H2(g) CH3OH(g) (a) How many moles of each reactant are needed to produce 4.83 102 g CH3OH? CO mol H2 mol (b) ...
Tuesday, April 3, 2012 at 9:15pm by Cat

Chemistry
Assume that a reaction occurs in which unknown substances R and S react to form unknown substances T and U. From the information below, determine the mass of substance T that will be formed if 45.0 grams of substance R reacts with 23.0 grams of substance S. (Assume that the ...
Tuesday, May 20, 2008 at 8:07pm by Daniel

CHEM
1. How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? What is the limiting reagent? 2. Calculate the mass of water produced from the reaction of 24.0 g of H2 and 160.0 g of O2. What is the limiting reagent? 3. The burning of 18.0 g of...
Sunday, June 1, 2008 at 9:05pm by Anonymous

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 193.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 1:01am by Odesa

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 244.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 4:17am by Anonymous

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 165.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 6:26am by kiril

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 165.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 7:13am by vanesa

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 141.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 8:11am by troubled student

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 490.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 9:39am by luis

CHEMISTRY
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 165.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 12:06pm by dato

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 165.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 1:24pm by student

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 263.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 11:46pm by kkr

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 200.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 1:36am by Ankur

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 359.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 2:46am by T

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 211.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 8:30am by Odesa

chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 213.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 2:29pm by asd

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 325.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 3:10pm by JoeBob

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 299.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 4:19pm by December

college chemistry
Carbon monoxide is toxic because it bonds much more strongly to the iron in hemoglobin (Hgb) than does O2. Consider the following reactions and approximate free energy changes: Hgb + O2 ---> HgbO2 ∆G⁰ = -70 kJ Hgb + CO ---> HgbCO ∆G⁰ = -80 kJ ...
Wednesday, April 28, 2010 at 1:02pm by Stephanie

chemistry
Hydrazine has the molecular formula N2H4 and is a volatile colourless liquid often used in industrial processes and as a rocket fuel. It has a single NN bond in its structural formula. When hydrazine is heated it produces ammonia (NH3) and nitrogen (N2) gases. When used to ...
Tuesday, January 25, 2011 at 4:53am by rebecca niles

chemistry
If a sample of a compound of carbon and oxygen contains 3.00g of carbon and 8.00g of oxygen, what is the mass percent of carbon in the compound? A. 27.3% B. 25.0% C. 37.5% D. 3.67% E. 2.67%
Friday, February 4, 2011 at 1:33pm by Kathy R

Science
Copper Oxide + Carbon -> Copper + Carbon Dioxide Calculate the mass of carbon needed to obtain 63.5g of copper from 79.5g of Copper Oxide
Sunday, February 23, 2014 at 5:43pm by Harry

Science
Copper Oxide + Carbon -> Copper + Carbon Dioxide Calculate the mass of carbon needed to obtain 63.5g of copper from 79.5g of Copper Oxide
Sunday, February 23, 2014 at 5:43pm by Harry

chemistry
Calculate the mass percent composition of carbon in each the following carbon compounds. a) C_4H_10 b) C_6H_10 c) CCl_2F_2 d) C_8H_13O_5N
Saturday, September 11, 2010 at 12:57pm by Mely

chemistry
When 0.100 mol of carbon is burned in a close vessel with 8.00g of oxygen, how many grams of carbon dioxide can form?
Sunday, July 24, 2011 at 9:18pm by Kristin

Chemistry
I have a cyclohexane with a 3 carbon chain coming off of it. and two methyl groups on the second carbon. what is it called :/
Monday, February 18, 2013 at 3:17am by Frustrated

Chemistry
Calculate the mass percent composition of carbon in each the following carbon compounds. C2H2 C3H6 C2H6 C2H6O
Monday, March 4, 2013 at 5:50pm by Amee

Biology
the carbon atoms in the carbon dioxide gas we breathe out come from molecules of??? please help! incredibly lost!
Wednesday, February 5, 2014 at 6:45pm by College Student

Bio
The purpose of your experiment is to show that certain reactions are speeded up by using a catalyst (in this case H2O2). These catalysts only work when they act on certain materials. That's why you are using sand to show that the hydrogen peroxide doesn't just react with ...
Monday, February 25, 2008 at 8:40pm by Christiaan

chemistry
So I posted this question yesterday and was told I had a few typos.... I fixed them and here is the question again... Please help me!!! A solution of ferrous sulfate (FeSO4) is titrated with a solution of potassium permanganate in sulfuric acid. The balanced half reactions are...
Tuesday, January 5, 2010 at 5:26pm by amy

AP Chemistry
I need alot of help on this problem, it is due WEDNESDAY and I have no clue how to do it Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it ...
Monday, January 21, 2008 at 12:08pm by Eric

Chemistry
The asymmetric carbon for the first one is #3 by your numbering system. The periods don't help that much but I can guess where the substituents go from the number of H atoms attached for the second question. A has an asymmetric carbon on #2 (first C on left is #1), B has none...
Friday, June 4, 2010 at 3:54pm by DrBob222

Chemistry
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 223.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Friday, December 14, 2012 at 1:01am by hk

Chemistry
1.What is the molar heat of vaporization of water, given the following thermochemical equations? H2 + 1/2 O2 --> H2O + 241.8 kJ H2 + 1/2 O2 --> H2O + 285.5 kJ a) 44.0 kJ/mol b)-44.0 kJ/mol c)241.8 kJ/mol 2. Which substance has a standard enthalpy of formation delta Hf, ...
Wednesday, July 21, 2010 at 5:58pm by John

Chemistry help please
You wish to increase the carbon content of a slab of steel by exposing it to a carburizing atmosphere at elevated temperature. The carbon concentration in the steel before carburization is 359.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 12:15pm by T

chemistry
In a bottle of unopened cola, the CO2 dissolved in the liquid is in equilibrium with the CO2 gas above the liquid. The dissolved gas reacts with water molecules in the liquid to from carbonic acid, which also dissociates into carbon dioxide and water. Which chemical equation(s...
Tuesday, April 23, 2013 at 12:05pm by Angeline

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