Sunday
April 20, 2014

Search: How many moles of carbon dioxide will be formed from 8.0g of methane?

Number of results: 14,607

chem
Very good. Now you use these two values to see which one is the limiting reagent. You do that by converting moles Na to mols H2 and moles H2O to moles H2. The conversion is done by using the coefficients in the balanced equation. Here is how you do the conversion of moles Na ...
Monday, September 21, 2009 at 3:47pm by DrBob222

chemistry
Could someone please tell me if I did this question correctly? An incomplete combustion reaction of 12.125 grams of propane proceeds as follows: 2C3H8 + 11O2 = 3CO2 + 4H2O + 2CO + C(s).How many grams of solid carbon residue are produced as a product? my answer: known: molar ...
Tuesday, October 13, 2009 at 8:55pm by Will

Chemistry
Convert 52.0 g C2H2 to moles. moles = grams/molar mass. Using the coefficients in the balanced equation, convert moles acetylene to moles CO2 and do the same thing for moles H2O. Now convert those moles to grams. g = moles x molar mass.
Monday, March 22, 2010 at 7:26pm by DrBob222

Chemistry
Calculate moles NaBr initially. moles = M x L. Calculate moles Cl2 initially. Use PV = nRT or the fact that a gas at STP occupies 22.4 L. Determine the limiting reagent and from that the moles NaCl produced. Then moles = M x L. You know moles and M, calculate L and convert to ...
Friday, February 12, 2010 at 6:32pm by DrBob222

chemistry
KI dissociates in water to produce KI ==> K^+ + I^- Moles KI = grams KI/molar mass KI. Since there are two ions per molecule of KI, the total number of moles will be just twice the moles KI. Moles of K^+ and moles I^- will equal moles KI.
Monday, November 23, 2009 at 11:09am by DrBob222

chemisty
in a soda-acid fire extinguisher, concentrateed sulfuric acid reacts with sodium hydrogen carbonate to produce carbon dioxide, sodium sulfate and water. How many moles of sodium hydrogen carbonate would be neefed to react with 150.0 grams of sulfuric acid? How many moles of ...
Thursday, February 21, 2008 at 5:56pm by leslie

chemistry
Write the equation and balance it. 4Al + 3O2 ==> 2Al2O3 You have moles Al. Using the coefficients in the balanced equation, convert moles Al to moles Al2O3. 0.646 mol Al x (2 moles Al2O3/4 moles Al) = ?? moles Al2O3. Note how the unit you don't want cancels (you want to get...
Friday, March 12, 2010 at 7:23pm by DrBob222

Science/Chemistry
The reaction is: Zn(OH)2 + 2HBr ---> ZnBr2 + 2H2O This reaction shows that moles of HBr = (1/2) moles of HBr. Moles of HBr = (liters)(moles/L) or moles HBr = (0.500 L)(0.50 mol/L) = _____? moles of ZnBr2 = (1/2) moles of HBr Multiply the moles of ZnBr2 by its formula mass ...
Sunday, September 28, 2008 at 4:42pm by GK

chemistry
assume that 0.50 L of carbon dioxide is required for a loaf of bread. what mass of glucose must be broken down by yeast to produce this volume of carbon dioxide? (density of carbon dioxide at baking temp. is 1.25 g/L.
Monday, July 25, 2011 at 9:01pm by jim

biology
If you inject carbon nanotubes into the body, can we produce antibodies against it? some ideas: - my answer is yes and no... the carbon nanotubes are too large for the t-cell to destroy it; therefore, they won't have an affect. -plus our whole body is made of carbon; therefore...
Thursday, March 3, 2011 at 12:36pm by david

chemistry
I see one double bond at the number one C, a cooh at carbon 1 and carbon 2, and a Cl at carbon 1. 1chloro- ethylic -1,2 dicarboxylic acid see if that makes sense.
Sunday, February 20, 2011 at 12:22pm by bobpursley

Chem
If you have a 12.01g sample carbon. What would be the average mass of a carbon atoms if it is 1.994 x 10 to the 23 power g. How many carbon atoms are in the sample?
Friday, February 1, 2008 at 2:15pm by Tati

College Algebra
Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden bowl remains. How old is the bowl? Half life of carbon is 5700 years.
Wednesday, December 8, 2010 at 9:17pm by Vince

Science
Balance the equation. 2NaOH + CO2 ==> Na2CO3 + H2O Convert 925 g CO2 to moles. moles = grams/molar mass. Using the coefficients in the balanced, equation, convert moles CO2 to moles NaOH. Moles CO2 x (2 moles NaOH/1 mole CO2) = moles CO2 x 2 = ??moles NaOH
Saturday, February 13, 2010 at 1:21pm by DrBob222

Chem
You don't need to do that. moles = M x L or millimiles = M x mL. Just remember that you probably will be asked for the moles KHP and to do that you must convert from moles Ca(OH)2 to moles KHP with the equation, 2KHP + Ca(OH)2 ==> 2H2O + CaK2P2 So obviously, moles KHP = 2 x...
Wednesday, July 22, 2009 at 9:49pm by DrBob222

chemistry
If 20 L of O2 burns completely a sample of carbon disulfide, how many liters of carbon dioxide are produced, how many liters of carbon dioxide are required? How did you get 16?
Friday, April 15, 2011 at 5:28pm by Trish

Chemistry
I can not determine the answer for this problem...can someone please help me? Determine the number if moles of MgO that form from the reaction of 4.4 moles of O2 in the following unbalanced reaction: Mg + O2 ----> MgO The balanced equation is: 2Mg + O2 -----> 2MgO a. 1.1...
Thursday, September 10, 2009 at 11:42am by Jessica

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 235.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 8:40am by Anonymous

physics
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 206.5 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Saturday, December 15, 2012 at 12:55pm by y

science
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 152.0 ppm and is initially uniform through the thickness of the steel. The atmosphere of...
Sunday, December 16, 2012 at 11:47am by fatine

chemistry
If 20 L of O2 burns completely a sample of carbon disulfide, how many liters of carbon dioxide are produced, how many liters of carbon dioxide are required?
Friday, April 15, 2011 at 5:07pm by Trish

Chemistry
How many moles Na^+ do we want? That is M x L = 4.6L x 0.138M = ? How many moles do we have? That is M x L = 4.6L x 0.118M = x The difference is ?-x = z moles Na^+ Convert z moles Na^+ to moles NaCl (to give z moles NaCl), then grams = moles x molar mass NaCl.
Monday, October 31, 2011 at 1:13am by DrBob222

Chemistry
Make sure the equation is balanced. moles Ba(OH)2 = M x L. moles HClO4 = M x L. From the question, I assume Ba(OH)2 is in excess and HClO4 is the limiting reagent. If so, use the coefficients in the balanced equation to convert moles HClO4 to moles Ba(OH)2 used. The difference...
Tuesday, February 16, 2010 at 3:34am by DrBob222

chem
moles Al = 2/26.98 = ?? moles Cl2 =2/70.9 = ?? moles Al x (2moles AlCl3/2 moles Al) = 0.0741 OR moles Cl2 x (2 moles AlCl3/3 moles Cl2) = 0.0188 Therefore, the limiting reagent is Cl2, moles AlCl3 formed is 0.0188 and that x molar mass of approximately 133 = 2.5 g AlCl3 as ...
Wednesday, July 20, 2011 at 11:45pm by DrBob222

Chemistry
Convert 2.16 g Pb(NO3)2 to moles. moles = grams/molar mass. Using the coefficients in the balanced equation, convert moles Pb(NO3)2 to a. moles NO2, and b. moles O2. Add moles gases, substitute into PV = nRT at the conditions listed and solve for P.
Tuesday, January 3, 2012 at 5:16am by DrBob222

chemistry
1. You have the balanced equation. 2. Convert 11.86 g (NH4)2CO3 t moles. moles = grams/molar mass. 3. Using the coefficients in the balanced equation, convert moles (NH4)2CO3 to a. moles NH3, b. moles CO2, c. moles H2O. 4. Use PV = nRT with total moles = n. Check my thinking.
Friday, April 16, 2010 at 4:12pm by DrBob222

stoichiometry
if you have 0.25 moles of carbon monoxide how many grams would you have?
Thursday, May 8, 2008 at 11:24am by holli

11th grade
A diamond contains 0.090 moles of carbon what is the mass of the diamond
Tuesday, November 17, 2009 at 12:58am by sparkle

Chemistry
Just back track, 76.7g of CO2*(1 mole of CO2/44.01g of CO2)= moles of CO2 8 moles of CO2=2 moles of C4H10 moles of CO2*(2 moles of C4H10/8 moles of CO2)=moles of C4H10 moles of C4H10 *(58.12g of C4H10/mole of C4H10)= mass of C4H10 *******I did not check the balanced equation, ...
Tuesday, February 26, 2013 at 5:49pm by Devron

science (chem)
No need to count atoms/molecules. In 3.0 moles, there are 9.0 moles of S In .40 moles, there are .80 moles of Al ions
Friday, September 30, 2011 at 6:46pm by Steve

chemistry
How many moles of water will produced at equilibrium be if there is 1.0 mole of carbon dioxide formed at equilibrium?
Thursday, February 14, 2013 at 8:50am by Anonymous

chemistry
Grams don't convert to liters or to molarity.. Grams converts to moles. moles = grams/molar mass. Then you use the equation to convert moles of one material to moles of the other. If you have M and L, then moles = M x L. So just follow the steps. Convert 1.87 grams NaHCO3 to ...
Saturday, July 23, 2011 at 4:25pm by DrBob222

Chemistry
Given the balanced equation representing a reaction : 2Fe+ 3Cu^2+ --> 2Fe^3+ +3Cu When the iron atoms lose six moles of electrons, how many moles of electrons are gained by the copper ions? (1) 12 moles (2) 2 moles (3) 3 moles (4) 6 moles how would i even start solving a ...
Sunday, February 16, 2014 at 5:16pm by Anonymous

chemistry
moles LiOH = M x L. Using the coefficients in the balanced equation, convert moles LiOH to moles CO2 used in the reaction. Now use PV = nRT to calculate moles CO2 initially, subtract moles CO2 used (from above), then convert moles CO2 remaining to grams. g = moles x molar mass...
Saturday, October 2, 2010 at 12:36am by DrBob222

chemistry
You have a 12.01 g sample of carbon. The average mass of a carbon atoms is 1.994 x 1023 g. How many carbon atoms are in the sample?
Tuesday, March 1, 2011 at 2:00pm by Sam

science
'm'gms of carbon reacts completely with 'n'gms of oxygen to produce carbon-dioxide.The mass of oxygen required to react with 'm'gms of carbon completely and produce carbon-monoxide is
Monday, August 1, 2011 at 9:05am by sameena

chemistry
Just a step or two. molarity = moles/L. So convert 612 g CaCl2 to moles. moles = grams/molar mass. Then moles/L (L is 5.04) will get it.
Sunday, June 13, 2010 at 6:40pm by DrBob222

Chemistry
Does the compound contain ONLY C and H? If so, then convert grams CO2 to moles C and convert grams H2O to moles H (H and not H2). Then find the ratio of C and H to each other with the smallest number being 1.00. Frankly, I think you have made an error in posting because if I ...
Wednesday, October 19, 2011 at 11:13am by DrBob222

chemistry
what volume of carbon dixoide (CO2) will be produced if 2.90 moles of iron (Fe) is produced
Monday, April 19, 2010 at 4:02pm by Bianca

Ap Biology
The end products are 6 carbon dioxides and 6 waters. The carbon dioxide contains carbon and 2/3 oxygen and the water contains hydrogen and 1/3 oxygen. The energy goes into the 36 ATP produced by cellular respiration.
Sunday, November 1, 2009 at 8:25pm by kkkk

Chemistry
Convert 15.4 g to moles. moles = grams/molar mass. M = moles/L solution. M = moles/0.071L = ??M
Sunday, February 27, 2011 at 3:35pm by DrBob222

chemistry
How many moles is 55.8 g. moles = grams/molar mass. What is the definition of M? M = moles/L Substitute for M and moles; solve for L.
Wednesday, March 9, 2011 at 9:43pm by DrBob222

Chemistry
Change C to moles. 8.53 g/12.01 = ?? mols Now convert moles TiO2 to moles of any one of the products, say TiCl4. Convert moles C to moles TiCl4. That will give you the limiting reagent; either TiO2 or C. Using the limiting reagent (which I assume will be C), convert moles C to...
Tuesday, February 10, 2009 at 7:17pm by DrBob222

Chemistry
A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same container but it already ...
Thursday, February 9, 2012 at 7:45pm by Elizabeth

Chemistry
A piece of solid carbon dioxide, with a mass of 6.8 g, is placed in a 4.0 L otherwise empty container at 23°C. a) What is the pressure in the container after all the carbon dioxide vaporizes? b)If 6.8 g solid carbon dioxide were placed in the same container but it already ...
Thursday, February 9, 2012 at 7:46pm by Elizabeth

Math
Many people are trying to reduce their carbon footprint. Amrita’s carbon footprint this year was  85% of last year’s footprint.  If her carbon footprint this year is 34 tonnes, what was her carbon  footprint last year?
Saturday, December 7, 2013 at 12:59pm by Samiha

Chemistry
Determine the # of moles of Al2S3 that can be prepared by the reaction of 0.400 moles of Aluminum with 0.700 moles of Sulfur, and Also find the # of moles of reactant in excess
Saturday, May 7, 2011 at 11:00am by Denise

chemistry
moles = M x L For Na2S, 0.01 x 0.002 = 2 x 10^-5 moles moles Hg(NO3)2 = 0.0005 x (50/1000)= 2.5 x 10^-5 moles Limiting reagent is Na2S. (The set up for Na2S by bun is correct but math is not; answer is 2 x 10^-5 moles and not 2 x 10^-3 moles.
Friday, August 13, 2010 at 8:53am by DrBob222

Chemistry
Convert 7.52 g NaOH to moles. moles = grams/molar mass. Convert the solution to moles. moles = M x L. Add the moles to find total moles and divide by total volume (in liters which means you must convert 1.95 gallons to liters).
Thursday, September 23, 2010 at 8:48pm by DrBob222

bio
5. What is meant by the term “carbon fixation”? a. The release of CO2 from glucose during catabolism b. The delivery of CO2 to an enzyme required for the production of glucose c. The production of two 3-carbon molecules from one 6-carbon molecule d. The production of a 4-...
Monday, April 6, 2009 at 7:59pm by doug

CHEMISTRY
a. if you have 3 moles of O2, 3 moles of Li, you are limited by the Li. You should get then the mole ratio of product to Li (2/4) times the moles of Li, or 2/4*3 moles Li2O b. You will be limited by three moles of H2. You get then 2Fe, and 3H2o c. you will be limited by the ...
Wednesday, October 31, 2012 at 1:48pm by bobpursley

chemistry
Convert 5,000 kg NH3 to moles. Convert 5,000 kg O2 to moles. Convert 5,000 kg CH4 to moles. Now convert each of those moles, individually, to moles of the product (HCN). The reactant producing the smallest number of moles HCN will be the limiting reagent. Then convert that ...
Sunday, February 1, 2009 at 8:20pm by DrBob222

Chemistry
Mg + 2HCl ==> H2 + MgCl2 Convert 5.00 g Mg to moles. moles = grams/molar mass Using the coefficients in the balanced equation, convert moles Mg to moles HCl. You know moles HCl = M x L. You moles and M, solve for L.
Tuesday, October 19, 2010 at 7:51pm by DrBob222

Chemistry
You're just working another stoichiometry problem. 2 g ZnO = how many moles. moles = grams/molar mass. ??moles ZnO x (4 moles Au/6 moles ZnO = xx moles Au. Convert moles Au to grams.
Monday, February 7, 2011 at 7:20pm by DrBob222

biology
> What are the forms in which carbon is found in the Ocean? I don't know. How about a guess? dissolved gaseous carbon dioxide dissociated carbonic acid bicarbonate ion various forms of biologically fixed carbon compounds such as calcium carbonate the living things themselves
Tuesday, September 16, 2008 at 11:44pm by Don

Stoichiometry Test
Take a 100 g sample which will give you 43.38 g Carbon 8.12 g hydrogen and 100-43.38-8.12 = g oxygen. Now convert each of the grams to moles. 43.38 g/atomic mass C = moles C. 8.12 g/atomic mass H = moles H. g oxygen/atomic mass O = moles O. Now find the ratio of these moles to...
Thursday, February 12, 2009 at 5:04pm by DrBob222

11th grade
You might begin here: http://www.google.com/search?q=what+is+the+mass+of+a+diamond+with+0.090+moles+of+carbon&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Tuesday, November 17, 2009 at 12:58am by SraJMcGin

Chemistry
3Cu+8HNO3--> 3Cu(NO3)2+ 2NO+4H2O How many moles of HNO3 are required to react with 6 moles of Cu? How many moles of Cu(NO3)2 are produced when 3 moles of Cu react? How many moles of Cu must react to produce 4 moles of NO? If 4 moles of NO are produced, how many moles of H2O...
Thursday, July 24, 2008 at 6:30pm by Andy

Chemistry
Convert 1.4 g Ba(OH)2 to moles. moles = grams/molar mass Using the coefficients in the balanced equation, convert moles Ba(OH)2 to moles HNO3. Finally, M = moles/L soln. You have M HNO3 and moles HNO3, solve for L.
Thursday, September 23, 2010 at 8:12pm by DrBob222

Chemistry
If you mix them, then M HCl x L HCl = moles HCl M NaOH x L NaOH = moles NaOH. What's left depends upon how many moles of each solution we had. These react 1:1; therefore, larger moles - smaller moles = moles left, then H^+ or OH^- (depending upon which is in excess) = moles/...
Tuesday, October 26, 2010 at 4:38pm by DrBob222

chemistry
mols HCl used = M x L = ? Now use the coefficients in the balanced equation to convert moles HCl to moles CaCO3. moles HCl x (1 mole CaCO3/2 moles HCl) = ?moles HCl x 1/2 = xx moles CaCO3. grams CaCO3 = moles x molar mass and convert to mg.
Tuesday, November 15, 2011 at 9:24am by DrBob222

chemistry
a) Use the coefficients in the balanced equation to convert moles of one specie to moles of another. 2.74 mol Cl2 x (2 moles BrCl/1 mole Cl2) = 2.74 x (2/1) = ?? b) Convert 239.7 g Cl2 to moles. moles = grams/molar mass. Convert moles Cl2 to moles BrCl. Finally, convert moles ...
Wednesday, June 2, 2010 at 5:49pm by DrBob222

chemistry
You shouldn't round until the final step. 17.24/81.39 = ?? moles ZnO 6.87/26.46 = ?? moles HCl. Now, using the coefficients in the balanced equation, convert moles ZnO to moles ZnCl2. (You can see how that is done by following the proper step in the first link I gave you.) Do ...
Wednesday, September 8, 2010 at 7:42pm by DrBob222

chemistry
You mean AgCl instead of NaCl. Calculate moles AgC2H3O2. moles = M x L. Do the same for MgCl2. Look at how the moles combine and convert to moles AgCl. One of the reagent will be the limiting reagent unless you have stoichiometric amounts present. Then convert moles AgCl to ...
Sunday, February 28, 2010 at 8:55pm by DrBob222

science
A scientist collects a sample of carbon dioxide that contains 25 moles of CO2. In grams, what is the mass of the sample?
Thursday, December 20, 2012 at 1:01pm by cristiano

chem
2AgNO3 + MgCl2 ==> 2AgCl + Mg(NO3)2 How many moles AgNO3 do you have? M x L = moles. How many moles MgCl2 do you have? M x L = moles. Calculate moles AgCl that will form (using the equation, of course), then convert to grams.
Sunday, June 7, 2009 at 9:48pm by DrBob222

Chemistry-
N has units of whatever moles had... Moles of molecules Moles of atoms Moles of donuts Moles of chemistry students.
Tuesday, October 1, 2013 at 10:34am by bobpursley

chemistry
Fe2O3(s) + 2CO(g)-->2Fe(s)+ 2CO2(g) Convert 4.00 kg Fe2O3 to moles. moles = grams/molar mass. Now look at the balanced equation. 1 mole Fe2O3 requires 2 moles CO and produces 2 moles Fe and 2 moles CO2.
Thursday, November 5, 2009 at 2:13pm by DrBob222

science
calculate what? assume you have 100 grams. then 80 grams is carbon, or 80/12 moles and 20 grams is H, or 20/1 moles H C=80/12=6.66 moles H= 20 divide each by the lowest C=1 H=3 empirical formula: CH3 Now, 22.4 liters has a mass of 1.35*22.4 = 30.24grams divide that by the ...
Thursday, December 1, 2011 at 7:12am by bobpursley

chemistry
Use PV = nRT and calculate n, number of moles. Using the coefficients in the balanced equation, convert moles N2 to moles NaN3. Now convert moles NaN3 to grams. g = moles x molar mass.
Monday, April 19, 2010 at 9:01pm by DrBob222

chemistry
I will do one. first: moles HCL=.030*.3=.009 moles moles base=.035*.3=.015 moles so you have excess of .006 moles OH pOH= -log (.006/.65) then pH= 14-pOH
Tuesday, April 10, 2012 at 8:49pm by bobpursley

chemistry
Convert 2.40 g Cu to moles. moles = grams/molar mass Using the coefficients in the balanced equation, convert moles Cu to moles HNO3. Molarity = moles/L. YOu know moles HNO3 and M HNO3, calculate L.
Wednesday, April 28, 2010 at 12:35pm by DrBob222

Chemistry
Write the equation and balance it. moles HCl = M x L = ?? Using the coefficients in the balanced equation, convert moles HCl to moles Pb(NO3)2. a) M = moles/L b) g = moles x molar mass.
Saturday, October 9, 2010 at 9:30pm by DrBob222

Chemistry
Calulate the volume of carbon dioxide produced when 0.5 tonnes of iron are produce.When iron oxide is heated with carbon monoxide, pure iron and carbon dioxide are formed.
Tuesday, June 5, 2012 at 3:33am by Jeconiah

chemistry
2NI3 ==> N2 + 3I2 5.50 g NI3 = ?? moles. moles = grams/molar mass. Using the coefficients in the balanced equation, convert moles NI3 to moles N2 and to moles I2. N2 should be 1/2 moles NI3 and I2 should be 3/2 moles NI3. Then use PV = nRT with new conditions of T etc to ...
Saturday, October 9, 2010 at 5:22pm by DrBob222

chemistry
2C4H10 + 13O2 ==> 8CO2 + 10H2O Use the coefficients in the balanced equation to convert from moles of one thing to moles of any other in the same equation. moles butane = 3.5 moles H2O x (2 moles butane/10 moles H2O) = 3.5*(2/10) = ??
Thursday, November 4, 2010 at 1:27am by DrBob222

chemistry
with would be more convenient? (A) burn 1 mole of carbon with 2 moles of sulfur and mesure the energy yield (B) burn 602,000,000,000,000,000,000,000 atoms of carbon with 1,204,000,,000,000,000,000,000,000 atoms of sulfur and measure the energy yield.
Saturday, June 19, 2010 at 6:06pm by eriika

chemistry
moles OH^- = 1.1L x 0.1M = ?? moles Ba(OH)2 = 1/2 that. Convert moles Ba(OH)2 to moles Ba (using the coefficients in the balanced equation)/ Convert moles Ba to grams Ba. g = moles x molar mass.
Saturday, February 19, 2011 at 7:50pm by DrBob222

chemistry
a) Convert 15.9 L C2H2 to moles. moles = L/22.41. Convert moles C2H2 to moles CO2 using the coefficients in the balanced equation. b) Convert 59.3 mL O2 to moles, convert moles O2 to moles CO2, convert moles CO2 to mL. Post your work if you get stuck.
Wednesday, June 2, 2010 at 5:46pm by DrBob222

math
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
Sunday, March 17, 2013 at 12:22pm by buffy

math
An artifact was found and tested for its carbon-14 content. If 79% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
Thursday, June 6, 2013 at 9:41am by ro

chemistry
2HNO3 + Ca(OH)2 ==>Ca(NO3)2 + 2H2O Moles HNO3 initially = M x L Moles Ca(OH)2 required is 2 x moles HNO3 (because o the equation 1 mol Ca(OH)2 = 2 moles HNO3). Then moles Ca(OH)2 = L x M You know moles and M, calculate L, then multiply by 1000 to convert to mL.
Wednesday, September 30, 2009 at 1:40pm by DrBob222

Honors Chemistry
You are correct that N2 is the limiting reagent but your numbers are not correct. N2 + 3H2 ==> 2NH3 moles N2 = 28/28 = 1.0 moles NH3 = moles N2 x (2 moles NH3/1 mol N2) = 1.0 x 2 = 2.0 grams NH3 = 2.0 x 17 = 34 g. moles H2 = 25/2 = 12.5 moles. moles NH3 produced = 12.5 x (2...
Sunday, November 8, 2009 at 8:39pm by DrBob222

chemistry
Hassium (III)oxalate contains 2.25 mol of Carbon atoms. What is the number of moles of oxygen atoms in the sample?
Thursday, October 25, 2012 at 10:45pm by Carina

Chem Help
2Na + 2H2O ==> 2NaOH + H2 0.27 g Na = how many moles Na? 0.27/23 = ?? moles Na (I'm using molar mass from my memory so you need to look them up and do them exactly). How much NaOH is formed? ?? moles Na x (2 moles NaOH/2 moles Na) = ?? moles NaOH. Now NaOH + HCl ==> H2O...
Monday, November 16, 2009 at 10:41am by DrBob222

chemistry
Convert 12.0 g Na to moles. moles = grams/molar mass. Using the coefficients in the balanced equation, convert moles Na to moles H2. Use PV = nRT with p in atm, n is moles, and T in Kelvin to determine volume in L.
Wednesday, May 19, 2010 at 8:52pm by DrBob222

Chemistry!
moles CaCl2 = M x L = ?? moles Ca^+2 = same moles Ca3(PO4)2 = M x L = ?? moles Ca^+2 = 3x that. Assuming the volumes are additive, M = total moles/total volume.
Tuesday, December 14, 2010 at 5:24pm by DrBob222

chemistry
5.0 g KCl = how many moles? moles = grams/molar mass. Then M = moles/L. YOu know M and you know moles, solve for L.
Friday, July 15, 2011 at 12:36am by DrBob222

Chemistry
Find the moles of OH- = moles NaOH moles OH- = (liters)(molar concentration) moles of HX = moles of OH- molar mass = (grams of HX) / moles HX
Thursday, February 19, 2009 at 12:08pm by GK

math
An artifact was found and tested for its carbon-14 content. If 88% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Sunday, July 17, 2011 at 1:17pm by Anonymous

Algebra
An artifact was found and tested for its carbon-14 content. If 77% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Saturday, July 23, 2011 at 2:27pm by Brandi

algebra
An artifact was found and tested for its carbon-14 content. If 79% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Wednesday, July 27, 2011 at 12:23pm by can some please help me with this one

algebra
An artifact was found and tested for its carbon-14 content. If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Sunday, October 30, 2011 at 4:35am by suzie

math
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Sunday, January 22, 2012 at 6:10pm by Anonymous

algebra
An artifact was found and tested for its carbon-14 content. If 84% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Saturday, February 18, 2012 at 6:49pm by Anonymous

Chemistry.
Calculate the volume of carbon dioxide produced when 0.5 tonnes of iron are produced. When iron oxide is heated with carbon monoxide, pure iron and carbon dioide are formed. Answer: 500000g/112g/mol =?/3 = 13392.9L
Thursday, June 7, 2012 at 10:03am by Jeconiah

math
An artifact was found and tested for its carbon-14 content. If 83% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Saturday, November 3, 2012 at 8:38pm by Anonymous

math
An artifact was found and tested for its carbon-14 content. If 83% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.
Saturday, November 3, 2012 at 9:05pm by Anonymous

Chemistry
n artifact was found and tested for its carbon-14 content. If 83% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.) yr
Tuesday, December 11, 2012 at 11:10pm by MARIA

Chemistry
a) 3.6 x 10^2 g CH3OH = ?? moles. 3.5 x 10^2/molar mass CH3OH = moles. You will need that many moles CO and twice that for moles H2. b) To produce 4.00 mole CH3OH, you will need 4 moles CO and 8 moles H2. Convert those moles to grams. g = moles x molar mass. c) Use the ...
Monday, April 5, 2010 at 2:19pm by DrBob222

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members