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April 19, 2014

Search: which reactions between HCL, AgNO3, Pb(NO3)2, H2SO4, BaCl2, CuSO4, KI, ZnSO4, Na2CO3, and K2CrO4 are double replacement

Number of results: 43,528

Physical Science
You can't be lost. You are so CLOSE it would bite if it could. Let's go over it bit by bit. There is 1 Pb on the left and 1 on the right so that is OK. There are 2 Cl on the left and 2 on the right. That is OK. You had to place a 2 in front of the HCl so the Cl would balance. ...
Tuesday, September 11, 2007 at 11:20pm by DrBob222

Chemistry. Percent mass...
0.471g / 303.26g/mol = 1.553x10^-3 mol PbSO4 moles of Na2SO4 = 1.553x10^-3 > 0.2206 g (total in the sample) moles of Pb(NO3)2 reacting = 1.553x10^-3 > 0.51435g 1.009 g - 0.2206 g = 0.7884 g Pb(NO3)2 total in the sample % Na2SO4 in the sample was: (100)(0.2206 ...
Friday, November 21, 2008 at 7:37pm by GK

Chemistry
1. Write the equation and balance it. 3Pb(NO3)2 + 2Na3PO4 ==> Pb3(PO4)2 + 6NaNO3 2. Convert 140 mL of 0.400 M Pb(NO3)2 to moles. mols = M x L. 3. Using the coefficients in the balanced equation, convert moles Pb(NO3)2 from above into moles Na3PO4 used. 4. Now convert moles ...
Thursday, June 17, 2010 at 7:03pm by DrBob222

Chemistry
Please show work. 2Al(s) + 2NaOH(aq) + 6H2O(l) ---> 2NaAl(OH)4(aq) + 3H2(g) What mass of hydrogen gas would be formed from a reaction of 2.48 g Al and 4.76 g NaOH in water? Pb(NO3)2(s) + 2NaI(aq) ----> 2PbI2(s) +2NaNo3(aq) (a) If the solution contains 7.00 g NaI, what ...
Monday, February 25, 2013 at 1:49pm by Anonymous

Chemistry
1. Is the Cl2 given in the problem as one of the products or is that what you think? I don't believe Cl2 is produced. NaCl + H2SO4 + NH3 ==> Na2SO4 + NH4Cl. You need to balance it. You may see this reaction better if we write it in two steps. NaCl + H2SO4 ==> Na2SO4 + ...
Friday, August 24, 2007 at 7:38am by DrBob222

CHEMISTRY
Pb(NO3)2 + 2NaCl ==> PbCl2 + 2NaNO3 How many mols Pb(NO3)2 do you have? mols = M x L = ? How many mols NaCl does that need? Look at the coefficients. 2x that. Now M NaCl = mols/L soln.You know mols and M, solve for L which is volume.
Friday, May 4, 2012 at 7:43pm by DrBob222

AP Chemistry
A chemist mixes 200.0mL of 0.800 M Fe(NO3)3 and 300.0 mL of 0.750 M K2Cr04 and enough of either 0.400 M KOH or 0.400 M Pb(no3)2 to end up with only two spectator ions in solution. a. How much precipitate will be formed b. How many mL of KOH or Pb(No3)2 must be used c. What are...
Sunday, January 16, 2011 at 12:21pm by qwerty123

Chemistry
Actually you need a reaction to be certain but in a pinch you can do 25.0 g Pb(NO3)2 x [molar mass PbI2/molar mass Pb(NO3)2] = ??g PbI2.
Wednesday, May 4, 2011 at 9:25am by DrBob222

Chemistry 114
Write the balanced ionic equations for the following precipitations and complex forming reactions: a) AgNO3 solution + copper sulphate solution b) copper sulphate solution + lead nitrate solution c)CoCl2 solution + conc. HCl d) Zinc chloride solution + NaOH solution, added ...
Monday, April 12, 2010 at 6:01am by Chenny

chemistry
how do you figure out how to Balance H2SO4+pb(OH)4=pb(SO4)2=H20
Monday, December 7, 2009 at 12:17pm by monique

chemistry
The unbalanced chemical equation is: H2SO4 + Pb(OH)4 --> Pb(SO4)2 + H2O Balancing the SO4 groups (2 of them): 2H2SO4 + Pb(OH)4 --> Pb(SO4)2 + H2O Balancing the H's (8 of them): 2H2SO4 + Pb(OH)4 --> Pb(SO4)2 + 4H2O
Monday, December 7, 2009 at 12:17pm by GK

Chemistry Honors
1) ch4 + 2O2 =) co2 + 2h2o 2) don't know how 3) Mg + H2SO4 =) Mgso4 +h2 4) 2C2H6 + 7O2 =)4CO2 +6H20 5)PB(NO3)2 + 2NAI =)PBI2 +2NANO3 6) 3Fe + 2O2 =)FePr
Wednesday, October 20, 2010 at 8:25pm by lien

chemistry
Zn (s) + Pb(NO3)2(aq) >> Pb(s) + Zn(NO3)2 (aq) you observe lead precipitating on the zinc surface.
Saturday, June 20, 2009 at 10:40am by bobpursley

Chemistry
1. Al + Pb(NO3)2 ----> Al(NO3)3 + Pb 2. FeS + O2 ----> Fe2O3 + SO2 3. C3H8 + O2 ----> CO2 + H2O I need some help balancing these equations. Thank you very much!
Tuesday, February 17, 2009 at 7:47pm by Momo

chem
How many moles of potassium iodide, KI, are required to precipitate all of the lead(II) ion from 25.0 mL of a 1.6 M Pb(NO3)2 solution? A. 0.020 mol B. 0.040 mol C. 0.080 mol D. 0.64 mol E. 64 mol
Sunday, April 28, 2013 at 3:48pm by victoria

chemistry
I'm not quite sure if you want 3.5M CuSO4 or 3.5M CuSO4.5H2O. I am assuming the former and want to start with CuSO4.5H2O. How many mols CuSO4 do you want? That's M x L = 3.5 x 0.250 = about 0.9 but you need to do that more accurately. Since there is 1 mol CuSO4 in 1 mol CuSO4....
Thursday, January 10, 2013 at 5:49pm by DrBob222

Gen chem 1
According to the following reaction, what volume of 0.25 M CaCl2 solution is required to react exactly with 50.0 mL of 0.20 M Pb(NO3)2 solution? CaCl2(aq) + Pb(NO3) (aq)- PbCl2(s) + 2 KNO3(aq).
Monday, March 11, 2013 at 9:36am by jenni

Chemistry
I answered this the other day for you or another student by giving appropriate information. The secret to this question is to know the solubility rules. Here is a simplified set. Memorize them. http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html There will be a ...
Wednesday, November 2, 2011 at 11:09am by DrBob222

chemistry
what volume (in L) of 0.150 M KCl solution is required to completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation? 2KCl (aq) + Pb(NO3)2 (aq) --> PbCl2 (s) + 2 KNO3 (aq)
Monday, June 21, 2010 at 2:05pm by samantha

Chemistry
I was just wanting to make sure I did these right. How many grams of solute are in each of the following solutions? a.) 2.5 L of 3.0 M Al(NO3)3 solution. for this one I get 1600 g of Al(NO3)3 b.) 75 ml of 0.5 M C6H12O6 solution. and for this one I get 6.8g of C6 H12 O6 How ...
Monday, November 29, 2010 at 4:12pm by Carrie

CHEMISTRY
I am having trouble understanding how to come up with the products for single replacement reactions. Can any one check my work and tell me what i am doing, and also point out if i am missing any rules. 1. KI + Cl2 ---> 2. Fe + HCl ---> 3. Zn + HNO3 ---> For number 1 i...
Wednesday, October 6, 2010 at 11:25pm by Help asap!! plz

Chemistry
Equetion for reaction Pb(NO3)2----> PbO + O2 + NO2 (1) Pb(NO3)2 (2) NO2 (3) O2 (4) PbO
Tuesday, July 27, 2010 at 2:30pm by Eze Nnaemeka

chemistry
It depends somewhat upon what the other part of Mg is. Pb(s) + MgCl2 will react to produce PbCl2 and Pb(s) + MgSO4 will produce PbSO4 however, Pb(s) + Mg(NO3)2 ==> no reaction.
Sunday, January 9, 2011 at 11:53am by DrBob222

Chemistry
Is there a reaction between CuSO4 + KI? When I performed the reaction, a brown and yellow color was formed but when I wrote out the molecular equation, I did not find a precipitate or gas evolution.
Sunday, February 22, 2009 at 3:04pm by Caileen

Chemistry
Is there a reaction between CuSO4 + KI? When I performed the reaction, a brown and yellow color was formed but when I wrote out the molecular equation, I did not find a precipitate or gas evolution.
Sunday, February 22, 2009 at 3:05pm by Caileen

Chemistry
Is there a reaction between CuSO4 + KI? When I performed the reaction, a brown and yellow color was formed but when I wrote out the molecular equation, I did not find a precipitate or gas evolution.
Sunday, February 22, 2009 at 3:05pm by Caileen

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

chem
State the type of reaction. Predict the products of the reactions. I have no clue how to do this any help? C3H8 + O2 ---> Mg + HCl ---> AgNO3 + NaCl ---> CuSO4 + Zn ---> How much of this do you know how to do? Just checking answers. Give us your answers and we ...
Tuesday, March 20, 2007 at 3:36pm by Paul

Chemistry
No, you divided 0.02 by 169.87 to obtain 0.000118 mols AgNO3. So you have 0.000118 mols Ag^+ and 0.000118 mols NO3^- The formula tells you that you have 1 mol Ag^+ per mol AgNO3 and 1 mol NO3^- per mol AgNO3. Total mols of ions (which is what I think the original post asked ...
Tuesday, January 29, 2013 at 9:56pm by DrBob222

Chemistry
Complete and balance the precipitation reactions. Include physical states in your equations. Ba(NO3)2(aq) + CuSO4 (aq)---> K3PO4(aq)+MgCl2 (aq)---->
Saturday, November 9, 2013 at 5:59pm by Jake

chemistry
Complete and balance the precipitation reactions. Include physical states in your equations. Ba(NO3)2(aq) + CuSO4 (aq)---> K3PO4(aq)+MgCl2 (aq)---->
Monday, November 11, 2013 at 1:35pm by lauren

chemistry
What is a complete ionic equation for the reaction between Pb(NO3)2 and NaI?
Wednesday, March 10, 2010 at 2:12pm by BT

chemistry
All of these are single replacement reactions IF they occur. The secret to knowing i they occur is to use the activity series as the prelude in the question suggests. If you don't have a copy of the activity series you can see one at this link. http://www.files.chem.vt.edu/...
Tuesday, January 8, 2013 at 11:51am by DrBob222

chem
Anytime the acid/base is the same; i.e., a monoprotic base(NaOH, KOH, NH3, etc) with a monoprotic acid (HCl, HC2H3O2, HBr, etc). It also is ok if they are both diprotic or triprotic. Diprotic acids are H2SO4, H2C2O4, etc) and diprotic bases are Ba(OH)2, Ca(OH)2, etc. The other...
Tuesday, October 30, 2012 at 6:26am by DrBob222

Chemistry
Pb(NO3)2(aq) 2 x 10-3 M Na2SO4(aq) 2 x 10-3 M Pb(NO3)2(aq) + NaSO4(aq) → PbSO4(s)+ 2NaNO3(aq) a) What are the concentrations of each ion within this solution? b) If 1L of each solution is mixed; will a precipitate form? why?
Tuesday, May 15, 2012 at 1:04pm by Jake

chemistry
okay so the solution would be. 0.150 M KCl x 0.175 M Pb(NO3)2/ 1 M KCL x 0.150 L/0.175 M Pb(NO3)2 = 0.023 L?
Monday, June 21, 2010 at 2:05pm by samantha

Chemistry
What i meant was I have already had the method in preparing the insoluble salt Pb(NO3)2 and KI and the soluble salt Sulphuric acid and copper oxide. What I need is the discussion of the method use or the procedure that you may have for this preparation the discussion for it?
Wednesday, March 17, 2010 at 4:52pm by Gillian

College Chemistry
Pb + NO3^- + Na2SO4 ==> PbSO4(s) + NO3^-
Monday, September 27, 2010 at 12:42am by DrBob222

chemistry
g H2O = 4.597 - 3.919 = 0.678 g BaCl2 = 3.919 Convert 0.678 g H2O moles. Moles = grams/molar mass Convert 3.919 g BaCl2 to moles the same way. Now fine the whole number ratio between the two. The easy way to do that is to divide the moles BaCl2 by itself (since you want 1.00 ...
Monday, October 4, 2010 at 9:16pm by DrBob222

chemistry
I have: 1.)Sn(NO3)4 + 2Mg----> 2Mg(NO3)2 + Sn 2.)K2O + H20 ----> 2KOH 3.)CO2(SO4)3 + Pb(C2H3O2)2 ----> CO(CH3COO)2 4H20 + Pb 4.)Al(HCO3)3---> AlCO2 + H2 5.)Cu(OH)2 + H3PO4----> Cu3(PO4)2 + H2O
Tuesday, September 23, 2008 at 12:02am by yeah

Limiting reagent
If 270. mL of 0.08089 M aqueous Pb(NO3)2 and 710. mL of 0.05493 M aqueous Na+ are reacted stoichiometrically according to the equation, what mass (g) of Na+ remained? Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)
Sunday, November 21, 2010 at 12:50am by Confused

Chem = )
Write the complete ionic equation for BaCl2 + NaOH ----> Al2(SO4)3 + BaCl2 ---> Al2(SO4)3 + NaOH ---> NaOH + Zn(No3)2 ---> BaCl2 + NaI --->
Wednesday, March 3, 2010 at 9:17am by Lauren

Chemistry
Suppose we have a solution of lead nitrate, Pb(NO3). A solution of NaCl(aq) is added slowly until no further precipitation occurs. The precipitate is collected by filtration, dried and weighed. A total of 10.27g of PbCl2(s) is obtained from 200.0mL of the original solution. ...
Wednesday, April 17, 2013 at 10:14am by Katherine

AP Chemistry
mols Pb(NO3)2 = grams/molar mass Then M NO3^- = 2x that.
Wednesday, September 19, 2012 at 8:26pm by DrBob222

Chem
Moles KCl = M x L. Using the coefficients in the balanced equation, convert moles KCl to moles Pb(NO3)2. Then moles Pb(NO3)2 = M x L and solve for L (then convert to mL).
Thursday, March 31, 2011 at 4:42pm by DrBob222

Physical Science
Balancing Equations Al+N2-->AlN NH4NO3-->N2O+H2O Pb(NO3)2+HCl-->PbCl2+HNO3
Tuesday, September 11, 2007 at 11:20pm by Amber

Physical Science
Think about what double replacement means. Change partners. K of one goes with NO3 of the other. SO4 of one goes with Pb of the other. (By the way, Pb and PB aren't the same thing)
Tuesday, May 4, 2010 at 11:46am by DrBob222

chem lab
set C: AgNO3(aq), Ba(NO3)2 (aq), HCI(aq), H2SO4(aq), NaOH(aq) what preliminary test results are you looking for to identify conclusively your unknown solutions as set C? Explain.
Tuesday, March 25, 2008 at 12:07am by natash

chemistry
write the molecular, ionic and net ionic equation for the following Ph(NO3)2 + NaOH Pb(NO3)2 + Na2CO3 Ni(NO3)2 + NaOH Ni(NO3)2 + Na2Co3
Thursday, October 20, 2011 at 8:12pm by TROUBLED

chemistry
If 740. mL of 0.06622 M aqueous NaI and 370. mL of 0.07151 M aqueous Pb(NO3)2 are reacted stoichiometrically according to the equation, what mass (g) of NaI remained? Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)
Friday, October 1, 2010 at 5:06pm by sparkle

Chemistry
Solid Na2SO4 is added to a solution which is 0.020 M in Pb(NO3)2 and 0.045 M in AgNO3. Assume the volume remains constant. Ksp = 2.0 10-8 for PbSO4 and Ksp = 1.2 10-5 for Ag2SO4. What is the concentration of the first ion precipitated when the second ion starts to precipitate?
Thursday, March 14, 2013 at 11:57pm by John

Chem
Initially, you have 1.00g of BaCl2 (MM=208.23) and 1.00g of AgNo3 (MM=169.88). How many moles of BaCl2 do you have initially in the mixture?
Thursday, March 24, 2011 at 6:56pm by cendy

CHEM Help!
how to balance these equations S8+Fe- Fe2S3 C6H14+O2- CO2+H2O Al(No3)3+H2SO4 -Al2(SO4)3+HNO3 Bi@S3+HCl-BiCl3+H2S
Tuesday, March 11, 2008 at 4:40pm by Anonymous

chemistry,Ksp
Ksp The solutions at the two Pb electrodes of a concentration cell were prepared as follows: Cell A: A mixture of 1.00 mL of 0.0500 M Pb(NO3)2 with 4.00 mL of 0.0500 M KX (the soluble potassium salt of an unspecified monovalent ion X-). Some PbX2(s) precipitates. Cell B: 5.00 ...
Wednesday, April 4, 2012 at 2:05am by Mahtab

chemistry
BaCl2*2H2O --> BaCl2 +2H20 4.36g ............... 3.72 ... 0.643g Convert each of the mass of product to moles. 3.72 g BaCl2 x (1 mol BaCl2 / 208.3 g BaCl2) = 0.0179 mol BaCl2 0.643g H2O x (1 mol H2O / 18.0 g H2O) = 0.0357 mol H2O Mole H2O / mole BaCl2 = 2 / 1
Sunday, January 24, 2010 at 9:16pm by Fat

chemistry.
Amount of moles= mass/molar mass No. of moles= 10.0g/250 g No. of moles= 0.04 moles c) CuO + H2SO4 ----> CuSO4 + H2O mol 1 1 1 1 1 mole of CuO = 1 mole of CuSO4.5H2O CuO= 64g + 16g= 80g 80 g of CuO = 250 g of CuSO4 x = 10g of CuSO4 10g x 80g/250g 800g/250 =3.2 grams of CuO
Saturday, October 24, 2009 at 6:17am by Anonymous

chemistry
Hydrochloric acid can be prepared using the reaction described by the chemical equation: 2 NaCl(s) + H2SO4(l) ----> 2 HCl(g) + Na2 SO4(s). How many grams of HCl can be prepared from 393 g of H2SO4 and 4.00 moles of NaCl?
Wednesday, September 30, 2009 at 4:18pm by j

10th grade
The addition of which nitrate salt will cause a decrease in the concentration of I-(aq)? Pb(NO3)2 Ca(No3)2 LiNo3 KNo3
Monday, April 26, 2010 at 5:04pm by juliannme

chemistry
******HOW DO YOU CALCULATE THE REDUCTION POTENTIAL OF 1 M CuSO4 AND 0.1 M CuSO4? NOTE: THE REDUCTION POTENTIAL OF 1M Zn(NO3)2 IS -0.76 V. I'M REALLY STUCK.
Friday, July 20, 2012 at 10:02am by fenerbahce

Chemistry
Identify the precipitate formed when solutions of these compounds are mixed. H2SO4 + BaCl2 ==> So when you do the double replacement reaction, would the products of this chemical equation be HCl + BaSO4? or H2Cl2 + BaSO4 ? (not balanced) also would both of the products be ...
Tuesday, March 16, 2010 at 8:53pm by Jack

Chemistry
Hydrochloric acid can be prepared using the reaction described by the chemical equation: 2 NaCl(s) + H2SO4(l) ----> 2 HCl(g) + Na2 SO4(s). How many grams of HCl can be prepared from 393 g of H2SO4 and 4.00 moles of NaCl?
Saturday, March 6, 2010 at 9:10am by Nancy

chemistry
Balance each of the following equations a)CH4+CL2......>CCl4+HCl b)AL(OH)3+H2SO4.....>Al2(SO4)3+H2O c)Fe+H2O......>fe3O4+H2 d)Al4C3+HCl......>AlCl3+CH4 e)C2H6+O2......>CO2+H2O f)P2H4.......>PH3+P4 g)S2Cl2+NH3......>N4S4+NH4CL+S8 h)Ag+HNO3.......>AgNO3+...
Sunday, April 15, 2012 at 3:41pm by faisal

REDOX Balancing equations
Al+NO3^-1-->Al(OH)4^-1+NH3 I am supposed to balance this reaction and label the reduction/oxidation reactions and oxidizing/reducting agents I have my specific steps to solving this but when I get to step 2 I do not see how I can split these into 2 half reactions To me it ...
Wednesday, June 10, 2009 at 7:18pm by Aparicio

Chemistry
You don't specify if this is 2% w/w or 2% w/v. I'll assume you mean 2% w/v. 2% w/v CuSO4 means 2g CuSO4 in 100 mL soln which is the same as 20 g CuSO4 in a L. 2M soln means 2 mols CuSO4/L soln and 2 mols CuSO4 = approximately 2*159.6 g CuSO4 or about 319 g CuSO4/L for a 2M soln.
Monday, April 30, 2012 at 8:42pm by DrBob222

chemistry
a cell is constructed by immersing a strip of silver in .10 M AgNO3 solution and a strip of lead in 1.0 M Pb(NO3)2 solution. A wire and salt bridge complete the cell. What is the potential of the silver electrode in the cell?
Thursday, December 9, 2010 at 2:15pm by audrey

Chemistry - Balancing Equations
Balance the following: Ca(OH) + H2SO4 -----> CaSO4 + H2O Na2S2O3 + I2 -----> 2NaI + Na2S4O6 ZnCl + Na2S -----> ZnS + NaCl SnCl4 + H2O ----> SiO2 + 4HCl I figured out the 2nd and 4th one to be: 2Na2S2O3 + I2 -----> 2NaI + Na2S4O6 SnCl4 + 2H2O -----> SiO2 + ...
Monday, April 19, 2010 at 1:16am by Akira

chemistry
To do this problem you need to know the solubility rules. Here is a simplified set. Memorize them. Use #4 (sulfate) and #3 (chlorides) as examples. I will leave the others for you. BaCl2(qq) + K2SO4(aq) ==> 2KCl(aq) + BaSO4(s) 2KCl(aq) + Pb(NO3)2(aq) ==> AgCl(s) + 2KNO3(...
Friday, October 28, 2011 at 12:05pm by DrBob222

chemistry
The confusing part here is that you want a solution of CusO4 but you have given CuSO4.5H2O to make it. What to remember. 1 mol CuSO4 = 1 mol CuSO4.5H2O; therefore, you want how many mols CuSO4? That's M x L = 0.850 x 0.400 = ? But that's the same number of mols you want for ...
Monday, July 15, 2013 at 5:15am by DrBob222

Chemistry
Since the AgNO3 have a molar mass of 169.87 g. I divided that by 0.02 g and got 0.000118 moles of AgNO3. How would I find how many moles is Ag and how many is NO3? Thanks
Tuesday, January 29, 2013 at 9:56pm by Shadow

Chemistry
Pb(NO3)2 => Pb2+ + 2 NO3- [Pb2+] = [Pb(NO3)2] = 7.77 mM = 7.77 x 10-3 M Pb(IO3)2 <=> Pb2+ + 2 IO3- Ksp = [Pb2+][IO3-]2 = 2.5 x 10-13 7.77 x 10-3 x [IO3-]2 = 2.5 x 10-13 [IO3-] = 5.67 x 10-6 M 5.7 x 10-6 M
Thursday, February 20, 2014 at 2:16am by Sonya

Chemistry
What are the balanced equation for the following reactions: HCl and Sodium Hydrogen Carbonate HCl and Copper oxide HCl and Calcium carbonate HCl and Magnesium NaOH and Ammonium Chloride
Tuesday, March 9, 2010 at 2:55pm by Abigail

Chemistry
I need some help with writing reactions. I have the following to write out: a. the hydration of copper sulfate b. the reaction of liquid sulfuric acid to form aqueous sulfuric acid c. the reaction of calcium oxide w/ water to form calcium hydroxide For a, I know copper sulfate...
Sunday, October 4, 2009 at 6:48pm by Nikki

AP Chemistry
millimoles Pb(NO3)2 = 50.0 x 0.17 = 8.5 mmoles KCl = 50.0 x 1.6 = 80.0 ...Pb(NO3)2 + 2KCl ==> PbCl2(s) + 2KNO3 I....8.50.......80.0.......0.......0 C...-8.50......-17.0.....8.50....17.0 E......0.......63.0......8.50.....17.0 (KCl) remaining = 63.0 mmoles/100 mL = 0.63M Let ...
Sunday, December 4, 2011 at 7:44pm by DrBob222

Complex numbers
f(x) = ax^n + bx^n-1 + ... f(h+ki) = a(h+ki)^n + b(h+ki)^n-1 + .. f(h-ki) = a(h-ki)^n + b(h-ki)^n-1 + ... All of the even powers of i remain unchanged, and all of the odd powers of i change sign. So, the real part is unchanged, and the imaginary part changes sign. f(4-3i) = 31...
Friday, May 24, 2013 at 3:29pm by Steve

High School Chemistry
All of these are correct. Make sure you understand the use of C1V1 = C2V2. That works ONLY when the ratio of acid to base is 1:1 as in the case of HCl and NaOH. It will not work for other cases. For example, it will not work for H2SO4 + 2NaOH ==> Na2SO4 + 2H2O. If we have ...
Monday, March 21, 2011 at 12:58am by DrBob222

Chemistry
A solution is 0.10M Pb(NO3)2 and 0.10M AgNO3. If solid NaCl is added to the solution what is [Ag+] when PbCl2 begins to precipitate? (Ksp PbCl2 = 1.7 x 10^-5; AgCl = 1.8 x 10^-10) The answers is 1.4 x 10^-8 How do I find the answer
Sunday, October 14, 2012 at 6:07pm by Fred

Chemistry
You need an equation. Ba(OH)2 + 2HCl --> BaCl2 + 2H2O Think moles.' moles Ba(OH)2 = M x L = ?? Using the coefficients in the balanced equation, convert moles Ba(OH)2 to moles HCl. ??moles Ba(OH)2 x (2 moles HCl/1 mole Ba(OH)2) = xx moles HCl Tben the definition of molarity ...
Thursday, October 7, 2010 at 5:36pm by DrBob222

chemistry
moles Pb(NO3)2 = M x L = 0.175 x 0.150 = 0.02625. From the equation, it takes 2 moles KCl to = 1 mole Pb(NO3)2; therefore, moles KCl = 2 x 0.02625 = 0.0525 Then M KCl = moles KCl/L KCl. You know M and moles, solve for L.
Tuesday, October 26, 2010 at 9:48pm by DrBob222

chemistry
Ba(OH)2 + 2HCl ==> 2H2O + BaCl2 mols Ba(OH)2 = M x L = ? Convert mols Ba(OH)2 to mols HCl using the coefficients in the balanced equation. mols HCl = twice mols Ba(OH)2. M HCl = mols HCl/L HCl. Solve for L and convert to mL.
Friday, April 19, 2013 at 10:07pm by DrBob222

chem
Initially, you have 1.00g of BaCl2 (mm= 208.23) and 1.00g of AgNo3 (MM=169.88). How many moles of AgNO3 do you have initially in the mixture?
Thursday, March 24, 2011 at 7:00pm by cendy

chemistry
1. Calculate moles Pb(NO3)2. mols = M x L. 2. Using the coefficients in the balanced equation, convert moles Pb(NO3)2 to moles KCl. 3. Convert mols KCl to L. M = mols/L.
Monday, June 21, 2010 at 2:05pm by DrBob222

chemistry
This is a work horse of a problem. I'll start the first one. 2AgNO3 + BaCl2 ==> 2AgCl + Ba(NO3)2 (Ba^2+) = 0.1 M x (100/450) = ? (NO3^-) = 0.1 M x (50/450) = ? etc.
Wednesday, May 2, 2012 at 6:56pm by DrBob222

Chemistry
Solid Na2SO4 is added to a solution which is 0.012 M in Pb(NO3)2 and 0.048 M in AgNO3. Assume the volume remains constant. Ksp = 2.0 10-8 for PbSO4 and Ksp = 1.2 10-5 for Ag2SO4. (a) Which compound precipitates first? (b) What is the concentration of the first ion precipitated...
Friday, March 15, 2013 at 12:02am by Gregory

chemistry
my teacher insists that we do it that way, i don't really understand it but i try! so it would come out to be 0.026 moles Pb(NO3)2. Then, converting Pb(NO3)2 into KCl it would come out to be 0.052 Moles KCl. Then divide 0.052 by 0.150 which would equal 0.15 L?
Monday, June 21, 2010 at 2:05pm by samantha

Chem.
Cu + AgNO3 ---> Ag + Cu(NO3)2 Why is there a two after NO3? Thanks.
Sunday, April 19, 2009 at 5:32pm by Em

Chemistry
A cell was constructed with two lead electrodes. The electrolyte compartment is 1 M Pb(NO3)2 (aq). In the other compartment, NaI has been added to a Pb(NO3)2 solution until a yellow precipitate forms and the concentration of I- ions is .5 M. The potential of the cell is .155 V...
Friday, February 28, 2014 at 3:00pm by Anonymous

Chemistry
I would solve for (H^+) of the HCl and add that to the first proton from H2SO4. You can check to see if HCN contributes enough to consider adding it in by setting up an ICE chart for HCN and using the sum of H^+ from H2SO4 and HCl as a common ion. I didn't do the calculation ...
Tuesday, February 28, 2012 at 7:29pm by DrBob222

chem - check euqation please
I think what you have shown will not work. There are many Pb^+2 solutions that coexist with Hg(NO3)2. I would suggest adding sulfate ion, chromate ion, chloride ion, iodide ion, bromide ion, carbonate ion, etc for the precipitation of lead(II) ion. The sodium salt would work ...
Wednesday, May 28, 2008 at 4:34pm by DrBob222

Chemistry
a. 3.67 mg/mL = 3.67 g/L 3.67 x (1 mol/461.01) = 7.96E-3 = (PbI2) ..........PbI2 --> Pb^2+ + 2I^- I.........solid....0........0 C.........solid....x........2x E.........solid....x........x Ksp PbI2 = (Pb^2+)(I^-)^2 Ksp = (7.96E-3)(2*7.96E-3)^2 = ? NOTE: (I^-) = twice (Pb^2...
Tuesday, March 25, 2014 at 12:33am by DrBob222

CHEM
Will you please tell me if these are right? Write the symbol of the caton or anion that give(s) the following reaction:? 1. Forms a precipite with AgNO3 that does not dissolve in HNO3 2. Forms a gas with HCl 3. Give a bright, yellow-orange flame test 4. Forms a precipitate ...
Sunday, November 7, 2010 at 10:47am by Jason

chemistry
Predict whether reactions should occur between aqueous solutions of the following compounds. If so, write balanced molecular and net ionic equations for the reactions. Include physical states. a. (NH4)2CO3 and CrCl3 b. Ba(OH)2 and HCl c. FeCl3 and NaOH d. Ca(HCO3)2 and HNO3
Sunday, July 3, 2011 at 1:33pm by ABCD

Chemistry
What is(are) the precipitate(s) that form when K2SO4, BaCl2, and AgNO3 solutions are mixed?
Saturday, February 23, 2013 at 11:02pm by Jacob

chemistry
calculate the mass of one mole of lead ii trioxonitrate v PB(NO3)2 If pb=207, N=14, O=16
Sunday, January 20, 2013 at 11:43am by calculate the mass of one mole of lead ii trioxonitrate v PB(NO3)2 If pb=207, N=14, O=16

CHM 090
You have the balanced equation. 1. Convert 50.0 mL of 0.60 M Pb(NO3)2 to moles. M x L = moles. 2. Using the coefficients in the balanced equation, convert moles Pb(NO3)2 to moles PbI2. 3. Now convert moles PbI2 to grams. g = mole x molar mass.
Tuesday, July 20, 2010 at 12:19pm by DrBob222

12th grade-chemistry
what mass of lead (ii) iodide (pbl2, mass=461 amu)is precipitated by the addition of an excess of potassium iodide (ki, mass=166 amu)to 50.0 ml of 0.60 m lead (ii) nitrate (pb(no3)2, mass=331.2 amu)?
Wednesday, October 20, 2010 at 12:53pm by ashlee

chemistry
Ba ions, perhaps. Pb ions, no. Pb^+2 + H2SO4 ==> PbSO4(s) + 2H^+ Ba^+2 + H2SO4 ==> BaSO4(s) + 2H^+ Note: Both BaSO4 and PbSO4 are insoluble in water solution and both are white. This test indicates that either or both could be present (as well as other ions). Ba^+2 + ...
Thursday, October 16, 2008 at 2:31am by DrBob222

Chemistry
For a battery that is fully charged and you are using it (discharging it), Pb + H2SO4 ==> PbSO4 + 2e + 2H^+ PbO2 + 2H2SO4 2e ==> PbSO4 + 2H2O + SO4^= Remember that oxidation is the loss of electrons and reduction is the gain of electrons. For discharging, Pb is the anode...
Saturday, April 26, 2008 at 5:18pm by DrBob222

chemistry
You want how many moles of CuSO4? M x L = moles = 2.000 x 0.250 L = ?? How many grams CuSO4 is that? moles = grams/molar mass and solve for grams CuSO4 = xx grams CuSO4. BUT you don't have CuSO4. You have CuSO4.5H2O so convert xx g CuSO4 to zz grams CuSO4.5H2O. That will be ...
Sunday, December 5, 2010 at 9:09pm by DrBob222

Chemistry
What mass (g) of magnesium chloride (MgCl2) must react with sulfuric acid (H2SO4) to release 890.2 ml of Hydrogen chloride (HCl) gas at STP according to the following equation? Round to one decimal place. MgCl2 (s) + H2SO4 --> MgSO4 (aq) + 2 HCl
Monday, April 8, 2013 at 3:32pm by Linzy

Chemistry
Electron Transfer Theory Write an label the oxidation and reduction half-reaction equations. a) Ni(s) + Cu(NO3)2(aq) -> Cu(s)+ Ni(No3)2(aq) oxidation - Ni(s) -> Ni2+(aq) + 2e- reduction - Cu2+(aq) + 2e- -> Cu(s) b) Pb(s) + Cu(NO3)2(aq) -> Cu(s) + Pb(NO3)2(aq) ...
Sunday, February 10, 2008 at 5:08pm by Alex

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