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April 19, 2014

Search: zn(s) 2 hcl(aq) h2(g) zncl2(aq) when 50.0 g of zn reacts completely

Number of results: 39,590

Chemistry105
1. (a) What is the molarity of a solution prepared by dissolving 4.315 g of NaOH in water to exactly 100 mL in a graduated flask? (Na = 23.0; O = 16.0' H = 1.0 amu).    (b) What volume of the above solution is required to neutralize exactly 25.00 mL of 0.1500 M HCl solution...
Tuesday, December 4, 2012 at 9:47pm by Mira

Chem 12
Given the two reactions: 5Fe2+(aq) + MnO4-(aq) + 8H+(aq) --> 5Fe3+ (aq) + Mn2+(aq) + 4H2O(l) 2MnO4-(aq) + 5C2O42-(aq) +16H+ --> 2Mn2+(aq) + 10CO2(g) + 8H2O(l) A.) Which reaction will occur at a faster rate? B.) Explain the reason for this result by comparing what is ...
Thursday, February 12, 2009 at 2:25am by Sam

chem
What will be the percent composition by weight of a solution made by dissolving 12.0 g of zinc nitrate, Zn(NO3)2, in 45.0 g of water? Zn(NO3)2_____________ H2O _____________
Wednesday, November 21, 2012 at 2:54pm by byke

Chemistry
When 0.689 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 112C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...
Friday, February 19, 2010 at 9:35pm by Adam

Chemistry
When 0.702 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 114C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...
Monday, February 22, 2010 at 12:15am by Taylor

Chemistry
When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...
Monday, February 22, 2010 at 5:17pm by eli

Chemistry
Write a net ionic equation for the overall reaction that occurs when aqueous solutions of potassium hydroxide and carbonic acid are combined. KOH + H2CO3 = KCO3 + H30 K^+(aq) + OH^-(aq) + h2CO3 (aq) = K^+(aq) + CO3^2+(aq) + H3O(aq) Is this correct so far?
Saturday, October 22, 2011 at 4:59pm by Hannah

Chemistry
a) HC3H5O2(aq)<===> H^+(aq)+ C3H5O2^-(aq) This is an odd way to write the this a) C3H5O2H(aq)<===> H^+(aq)+ C3H5O2^-(aq) Your answer to a) means you have shown the wrong proton dissociating here. c) CH3COOH(aq)<===> H^+(aq)+ CH2COOH^-(aq) should be c) CH3COOH...
Wednesday, February 16, 2011 at 12:18am by Dr Russ

Chemistry
The antacid Amphogel contains aluminum hydroxide Al(OH}3 How many milliliters of 2.00(M}HCl are required to react with 80.0 mL of 1.48 (M} Al(OH)3(s)? Al(OH)3(s)+ 3HCl(aq)to AlCl3(aq) + 3H2O(aq)
Saturday, April 9, 2011 at 12:03am by Help!!

gen chem
if the voltage of the cell is 2.0898V at 25C when [Mg2+] = 0.1945M and the pressure of H2 = 1.00atm, what is the pH? E0=2.3700V Mg(s)+2H+(aq)<--> Mg2+(aq)+ H2(g)
Saturday, May 8, 2010 at 7:10pm by Chem

Chemistry
2Li(s) + 2H+(aq) + SO42–(aq) ---> 2Li+(aq) + SO42–(aq) + H2(g) The reaction shown above between lithium and sulfuric acid is best described as 1 acid-base. 2 oxidation-reduction. 3 precipitation. a. 1 only b. 2 only c. 3 only d. 1 and 2 only e. 1, 2, and 3
Tuesday, March 23, 2010 at 5:43am by Zakaria

chemistry
2KOH + H2SO4 ==>2H2O + K2SO4 2K^+(aq) + 2OH^-(aq) + 2H^+(aq) + SO4^-2(aq) ==> 2H2O(l) + 2K^+(aq) + SO4^-2(aq) The net ionic equation is 2OH^-(aq) + 2H^+(aq) ==> 2H2O(l) Then I would divide by 2 to give simply OH^-(aq) + H^+(aq) --> H2O(l) but your prof may frown on...
Tuesday, October 12, 2010 at 6:47pm by DrBob222

chemistry
How do you calculate the theoretical cell voltage? 1) Zn|Zn^+2 (1M)| Cu|Cu^+2 (1M) okay so by looking at example this example Calculate the emf (voltage) for the following reaction: Zn(s) + Fe2+ → Zn2+ + Fe(s) Write the 2 half reactions: Zn(s) → Zn2+ + 2e Fe2+ +2e...
Friday, July 20, 2012 at 10:02am by fenerbahce

chemistry
H^+(aq) + I^-(aq) + K^+(aq) + OH^-(aq) ==> H2O(l) + K^+(aq) + (I^-)(aq) The net ionic equation is H^+(aq) + OH^-(aq) ==> H2O(l)
Thursday, November 7, 2013 at 4:25pm by DrBob222

12 chemistry
Write the balanced chemical equation for each reaction: K2MnO4(aq)+H2SO4(aq)+NaHSO3(aq)= ? K2MnO4(aq)+NaOH(aq)+NaHSO3(aq)= ? start with the net ionic equations.
Monday, September 28, 2009 at 7:02pm by izzy

Chemistry
Balance the following half-reactions: (a) (acidic) VO2+ (aq) -------V3+ (aq) (b) (basic Ni(OH)2 (s)--------Ni2O3 (s) (c) (acidic) NO3- (aq)-------NO2 (aq) (d) (basic) Br2 (aq)----------BrO3- (aq)
Sunday, October 28, 2012 at 10:10pm by lynn

Chemistry
Balance the following half-reactions: (a) (acidic) VO2+ (aq) -------V3+ (aq) (b) (basic Ni(OH)2 (s)--------Ni2O3 (s) (c) (acidic) NO3- (aq)-------NO2 (aq) (d) (basic) Br2 (aq)----------BrO3- (aq)
Sunday, October 28, 2012 at 11:12pm by lynn

ap chemistry please BOB HELP ME
I'm sorry to be such a big bother but I just want to make sure I did it the right way. (.0985gZnCl2)(1molZnCl2)/(136.28gZnCl2) I got(7.23times10withthe exponent-4 mols) Then I converted moles of ZnCl2 to mol of Zn using themole to mole ratio. Then I converted moles of Zn to ...
Sunday, September 9, 2007 at 8:00pm by Julissa

chemistry
Nevermind, I got it already, its: FeCl3(aq) + 3 KSCN(aq)--> Fe(SCN)3(aq) + 3 KCl(aq) 3 Cu (s) + 8 HNO3 (aq) --> 3 Cu(NO3)2 (aq) + 2 NO (g) + 4 H2O (l)
Sunday, November 7, 2010 at 8:55pm by john

Chemistry
Chlorine gas may be easily prepared in the lab according to the reaction: 2KMnO4(s)+ 16HCl(aq)-> 2 MnCl2(aq)+5Cl2(g)+ 8H2O(l)+ 2KCl(aq) What mass of HCl is needed to prepare 1 mole of Cl2 gas?
Sunday, November 1, 2009 at 4:48pm by Christina

Chemistry
Write balanced complete ionic equation for HC2H3O2(aq) + K2CO3(aq)-----> H2O(l)+CO2(g)+KC2H3O2(aq) I put 2H+(aq)+2C2H3O2-2(aq)2K+(ag)+CO3-2(aq)------>H2O(l)+CO2(g)+2K+(aq)+C2H3O2-2(aq) and said it was wrong, but I got this part right. 2H+(aq)+CO3 2-(aq)----->H2O(l)+...
Friday, October 29, 2010 at 9:09pm by Lisa

Chem 1LB
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...
Sunday, February 21, 2010 at 4:32pm by Libit

Chem 1LB
When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant figures. Do not ...
Sunday, February 21, 2010 at 4:49pm by Libit

physical science
plan,design and condact an investigation to find out whether the amount of heat produced will depend on an increase on the concentration of HCl when HCl reacts with an excess Zn.
Thursday, April 25, 2013 at 5:08pm by kholofelo

chemistry
(a) 3NiCl2(aq) + 2Na3PO4(aq) ---> Ni3(PO4)2(s) + 6NaCl (b) 3Ni^+2(aq) + 6Cl^-(aq) + 6Na^+(aq) + 2PO4^-3(aq) ---> Ni3(PO4)2(s) + 6Cl^-(aq) + 6Na^+(aq) (c) [Cancel out the ions that have not changed to get the net ionic equation]
Thursday, December 3, 2009 at 9:55am by GK

Chemistry
I need to isolate the mass (m) of Zn in this formula but i am unabable to do so... 0.000595mol= 3(0,0233g - mZn) / 2 (26,98 g/mol) + m Zn / 65.39 g/mol Please help ASAP!! Thx!
Wednesday, October 10, 2007 at 12:45pm by Sonia

chemistry
REVISION TO PREVIOUS POST: What is the pH of the solution created by combining 1.90 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 ml of the 0.10 M HC2H3O2(aq)? I understood how to do the HC2H3O2, but I can't do the HCl. I am trying to do the same ...
Sunday, July 11, 2010 at 10:08pm by Sara

Chemistry
Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g) delta H1? MgO(s) + 2HCl(aq) ->MgCl2(aq) + H2O(l) delta H2? To make these equations add up to the formation reaction of MgO, you will need to include the following: H2(g) + 1/2O2(l) delta H =-241.8 kJ Using Hess's Law and manipulating...
Tuesday, February 14, 2012 at 10:16am by Hannah

Chemistry
I'm about to do the second part of a Limiting Reagent laboratory tomorrow. There are a few questions that are giving me trouble on the pre-lab assignment. In the first lab period, we measured the amount of H2 gas produced in a reaction of Mg and 10 mL of 2.0 M HCl. We varied ...
Wednesday, March 11, 2009 at 11:17pm by Jake

chemistry
write the reaction for Zn + HCl
Thursday, March 31, 2011 at 1:30am by Juanita

Chemistry
CoCl2(aq) + NH3(aq) = ? Cu(NO3)2(aq) +NH3(aq) = ? CuSO4(aq) +NH3(aq) = ? Could some one please tell me what the answers are?? I am stuck... what do I do with the NH3??? Thank you!!!!!
Sunday, September 16, 2012 at 5:54pm by Georg

chemistry
When 25.0 g of Zn reacts,how many L of H2 are formed at STP?
Saturday, April 13, 2013 at 11:38pm by Red

chemistry
heat lost by Zn + heat gained by water = 0 [mass Zn x specific heat Zn x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 Substitute and solve for the one unknown.
Thursday, April 25, 2013 at 1:33pm by DrBob222

Chemistry
2KMnO4(aq)+16HCl(aq)->2MnCl2(aq)+5Cl2(g)+8H2O(l)+2KCl(aq) A.)the volume of 0.414 M KMnO4 needed to produce 1.66 mol MnCl2 B.) the volume of 2.15 M HCl needed to produce 112 mL of 0.618 M KCl C.)the molarity (M) of the HCl solution when 26.42 mL react with 28.38 mL of 0.398 ...
Friday, December 10, 2010 at 1:40pm by Anonymous

chemistry
I think you have made an error in your post; I think the M stands for 0.190 Molar and 0.220 Molar. KOH(aq) + HCl(aq) ==> KCl(aq) + H2O(l)
Sunday, October 2, 2011 at 11:08pm by DrBob222

Chemistry
How many grams of zinc must react to give 13.0 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)
Monday, March 18, 2013 at 3:17pm by Lindt

chem
I just need to know the net ionic equation and balance them. I figured the equation. but the net and balance is harder. Fe(NO3)3 (aq) + Na2CO3 (aq) = FeCO3 (s) + Na2(NO3)3 (aq) Fe(NO3)3 (aq) + NaI (aq) =FeI (s) + Na(NO3)3 (aq) Ba(NO3)3 (aq) + Na3PO4(aq) = BaPO4 (s) + Na3(NO3)3...
Saturday, February 18, 2012 at 7:37pm by Suey

Chemistry
Mg(s) + 2HCl(aq) ==> MgCl2(aq) + H2(g)
Wednesday, January 25, 2012 at 5:00pm by DrBob222

Chem
1.Write the equation. 2. Convert 20.0g Zn to mols Zn. 3. Using the equation convert mols Zn to mols H2O (steam). 4. Convert mols H2O (steam) to volume using mols x 22.4 L/mol = ?? L. The part on hydrogen is a separate question but is worked by the same principles.
Thursday, May 15, 2008 at 5:35pm by DrBob222

chemistry
You have done the Zn/Cu cell right. The Ecell = 0.35 v. For the same element (Zn/Zn^2+) and (Zn/Zn^2+) but with the Zn^2+ different concentrations, it is Ecell = Eocell -(0.0592/n)log(dil soln/concnd soln). Eocell is always 0 since we have th same element. n is fairly obvious ...
Friday, July 20, 2012 at 10:02am by DrBob222

Chemistry
Look at the activity series of metals. A metal will displace an ION below it in the activity series. And that is a spontaneous reaction. http://www.files.chem.vt.edu/RVGS/ACT/notes/activity_series.html For example, Zn metal will displace Cu^+2 ion in the reaction Zn + CuCl2...
Tuesday, April 6, 2010 at 4:30pm by DrBob222

Chemistry
What is the reduction half-reaction for the reaction between iron(II) sulfate and potassium permanganate in a sulfuric acid solution? 5Fe2+(aq) + MnO4–(aq) + 8H+(aq) --> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) a. MnO4– + 3e– --> Mn2+(aq) + 4H2O b. MnO4–(aq) + 8H+(aq) + 5e– --->...
Tuesday, March 23, 2010 at 5:41am by Zakaria

Chemistry
What is the reduction half-reaction for the reaction between iron(II) sulfate and potassium permanganate in a sulfuric acid solution? 5Fe2+(aq) + MnO4–(aq) + 8H+(aq) --> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) a. MnO4– + 3e– -->Mn2+(aq) + 4H2O b. MnO4–(aq) + 8H+(aq) + 5e– -->...
Tuesday, March 23, 2010 at 7:23am by Husy

Chemistry
Solution Density(g/L) Boiling Point Freezing Point 1.0m C2H5OH(aq) 1.05 100.5 -1.8 1.0m HCI(aq) 1.03 101.0 -3.7 1.0m NaCl(aq) 1.06 101.0 -3.7 2.0m NaCl(aq) 1.12 102.1 -7.4 1. Which properties in the table are colligative properties? 2. What can you conclude about the ...
Thursday, January 20, 2011 at 12:56pm by Nicole

chemistry
"Ag(s) reacts with none of the 4 (solutions of Ag^+2, Pb^+2, Cu^+2, Zn^+2}. So Ag(s) goes at the bottom of the table for now although there may be some metals below silver when you finish with the entire table. Cu(s) reacts with (Ag^+ solution) so Cu goes above Ag ion. It is ...
Monday, April 14, 2008 at 4:47pm by Joseph

Chemistry
Would you store a solution of zinc nitrate in an aluminum container? Use half-reactions to explain your answer. Al ==> Al^+3 + 3e Zn ==> Zn^+2 + 2e Look up the above half reactions and you will see that the Al will go into solution and the Zn+2 will come out. Eventually...
Sunday, January 21, 2007 at 2:39pm by J.M.

Chemsitry
in the equation CaO(s) +2H+(aq)-->Ca^2+(aq)+H2(g)
Wednesday, June 26, 2013 at 12:33am by imstupid

ChemISTRY (WEBWORK)
A student measures the potential for cells containing A+B+and C+ ions and their metals and records his data in the table below: ............. Overall Reaction ................Potential (V) Cell#1'''''''A(s) A+(aq) B+(aq) B(s)''''''''''''0.90 Cell#2''''''A(s) A+(aq) C+(aq) C(s...
Wednesday, July 14, 2010 at 3:30am by laila

Chemistry
2 Fe (s) + 6 HCl (aq) -> 2 FeCL3 (s) + 3 H2 (g) Given 16 g of HCl and 10g Fe react with how many grams of FeCl3 are produced (limiting reactant)?
Thursday, May 24, 2012 at 6:50pm by Lily

Chemistry
Yes, the work you show is correct; however, the correct empirical formula is ZnCl2. If you post the grams Zn and Cl2 and how they were determined, perhaps we can spot the error.
Monday, October 26, 2009 at 9:38pm by DrBob222

Chemistry
What is the pH of the solution created by combining 12.40 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? I know how to solve for HCl but not with HC2H3O2.
Saturday, May 1, 2010 at 8:43pm by Manali

chemistry
A balanced equation that represents an overall cell reaction is shown. Choose the cell notation which corresponds to the electrochemical cell that is described by this equation. a) Sn2+(aq) + 2Cu+(aq) → Sn4+(aq) + 2Cu(s) b) Pt(s) l Sn2+(aq), Sn4+(aq) ll Cu+(aq) l Cu(s) c...
Tuesday, November 15, 2011 at 8:07pm by Bob, NEED YOUR HELP

physics practical investigation
Plan,design and conduct an investion to find out whether the amount of heat produced will depend on increase on concentration of Hcl when Hcl reacts with an excess zn.
Monday, March 25, 2013 at 5:14am by Jossie

physical sciences
plan,design and conduct an investigation to find out wether the amount of heat produced will depend on an increase on the concentration of HCL when HCL reacts with an excess Zn
Sunday, April 28, 2013 at 5:17am by machata rilinde

Chemistry
What is the pH of a solution prepared by mixing 50.0 mL of 0.010 mol/L HCl(aq) and 50.0 mL of 0.010 Ca(OH)2(aq)? Assume the temperature is 25 degrees celsius, where Kw = 1.0 x 10^-14 at 25 degrees celsius.
Wednesday, May 18, 2011 at 7:34pm by iYeon

Chemistry
50mL of 0.1M = .005 moles of AgNO3, so based on balanced equation, that will react with .0025 moles Zn. Calculate q(zinc) = -(q(sol) + q(cal)) q(zinc) = -(50*4.18*2.92 + 98.6*2.92) q(zinc) = -898.19 J then divide by .0025 moles of Zn reacting (and covert to kJ) = -306kJ/mol
Wednesday, June 30, 2010 at 4:34pm by Chris

Chemistry
50mL of 0.1M = .005 moles of AgNO3, so based on balanced equation, that will react with .0025 moles Zn. Calculate q(zinc) = -(q(sol) + q(cal)) q(zinc) = -(50*4.18*2.92 + 98.6*2.92) q(zinc) = -898.19 J then divide by .0025 moles of Zn reacting (and covert to kJ) = -360kJ/mol
Wednesday, June 30, 2010 at 4:34pm by Chris

Chemistry
What do you think 0.500 M HCl(aq) is? That's 200 mL of 0.5 M HCl(aq) which is mostly water. Only 3.65 grams is HCl. And they specify that the density is 1.00 g/mL so that is 200 g for water. Also, the 4.184 J/g*C listed in the problem is the specific heat for WATER.
Monday, February 22, 2010 at 12:15am by DrBob222

Chemistry
Limestone (CaCO3) emits CO2 gas when exposed to HCl. What is the theoretical yield of CO2 if 56.1 grams of limestone is completely dissolved in HCl? CaCO3(s) + 2 HCl(aq) R CaCl2(aq) + CO2(g) + H2O(l) a. 21.5 g b. 4.16 g c. 9.53 g d. 24.7 g
Wednesday, June 5, 2013 at 10:54am by Anonymous

chemistry
15. On October 21, 1982, the Bureau if the Mint changed the composition of pennies. Instead of an alloy of 95% Cu and 5% Zn by mass, a core of 99.2 Zn and 0.8% Cu with a thin shell of copper was adopted. The overall composition of the new penny was 97.6% Zn and 2.4% Cu by ...
Sunday, September 12, 2010 at 10:40pm by kelly

Chem
For the following electrochemical cell: Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq) Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. Fe(s) + 8H+(aq) + MnO4–(aq)Mn2+(aq) + 4H2O(l) + Fe2+(aq) B. 5Fe(s) + 16H+(aq) + 2MnO4–(aq)2Mn2+(aq) + ...
Saturday, May 7, 2011 at 12:54pm by Anonymous

Chem
For the following electrochemical cell: Fe(s) Fe2+(aq) MnO4–(aq) Mn2+(aq) Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. Fe(s) + 8H+(aq) + MnO4–(aq)Mn2+(aq) + 4H2O(l) + Fe2+(aq) B. 5Fe(s) + 16H+(aq) + 2MnO4–(aq)2Mn2+(aq) + ...
Saturday, May 7, 2011 at 12:54pm by Anonymous

Chemistry
The antacid Amphogel contains aluminum hydroxide Al(OH)3. How many milliliters of 6.00M HCl are required to react with 150mL of 1.12M Al(OH)3? Al(OH)3(s) + 3HCl(aq) → AlCl3(aq) + 3H2O(aq) Help please and thanks in advance
Sunday, November 3, 2013 at 12:46am by Nadia

chemistry
Which of the following are redox reactions? (a) Ba(NO3)2 (aq) + H2SO4 (aq) -> BaSO4 (s) + 2 HNO3 (aq) (b) NH4NO2 (s) -> N2 (g) + 2 H2O (g) (c) CuO (s) + H2 (g) -> Cu (s) + H2O (L)
Wednesday, May 9, 2012 at 9:54pm by Derrick

chemistry lab
please help its due at 5 When 0.671 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 109C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to ...
Monday, February 23, 2009 at 5:26pm by tweety

chemistry
For which of the following mixtures will Ag2SO4(s) (Ksp=1.20E^-5)precipitate? More than one answer can be selected. a.) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.20 M AgNO3(aq) b.) 150.0 mL of 0.10 M Na2SO4(aq) and 5.0 mL of 0.30 M AgNO3(aq) c.) 150.0 mL of 0.10 M Na2SO4(...
Tuesday, November 6, 2012 at 12:23am by chem question

General Chemistry
3.71 When potassium cyanide (KCN) reacts with acids, a deadly poisonous gas, hydrogen cyanide (HCN), is given off. Here is the equation: KCN(aq) + HCl(aq) -> KCl(aq) + HCN(g) If a sample of 0.140 grams of KCN is treated with an excess of HCl, calculate the amount of HCN ...
Monday, May 24, 2010 at 2:39pm by Kendra

Chemistry
What mass of baking soda (NaHCO3) would be required to neutralize 10.00mL of 12.1M muriatic acid remaining in a empty water bottle? HCl(aq)+NaHCO3(aq)=>NaCl(aq)+CO2(g)+H2O(l)
Wednesday, April 13, 2011 at 10:52pm by Mateo

chemistry
I don't know what you are using for Eo. Texts vary so the voltage calculated will vary. Here is how to do the first one using my values. You should substitute values from your text. Zn ==> Zn^+2 + 2e Eo = 0.762 as written. Cu^+2 + 2e ==> Cu Eo = 0.345 as written...
Sunday, July 22, 2012 at 6:50pm by DrBob222

Chemistry
BrO3^-(aq)+Sn^2+(aq)+ ____ -->Br^-(aq)+Sn^4+(aq)+ _____ H20(l)and H^+(aq) are involved in the reaction. What are the coefficients of the six species in the balanced equation above? Remember to include coefficients for H2O(l) and H+(aq) in the appropriate blanks.
Tuesday, March 9, 2010 at 5:31pm by Anonymous

Physical science
what is the concentration hcl react with zn
Wednesday, March 9, 2011 at 6:59am by Charles

Chemistry
What is the volume of 0.129 M HCl(aq) re- quired to neutralize all of the hydroxide ions in 46 mL of 0.216 M KOH(aq)? Answer in units of mL. Answer: 77.0232 What is the molarity of Cl− ions at the stoichiometric point? Answer in units of mol/L. What is the pH of the ...
Wednesday, March 23, 2011 at 9:54pm by Matthew

Chemistry
You have a piece of copper metal, mostly copper but with a small amount of Zn in it, and you want to purify it so the copper is by itself and the Zn is not in it. The problem calls that the impure copper. Here is what we want to happen. We want the Cu/Zn in the impure copper/...
Monday, April 14, 2008 at 6:03pm by DrBob222

chemistry
when 25.0 g of Zn reacts how many L of H2 gas are formed at STP
Monday, July 5, 2010 at 1:30pm by Stephanie

Inorganic chemistry
Calculate E naught cell for the reaction b 5Cd(s) + 2MnO4-(aq) + 16H+(aq) ==> 5Cd^2+(aq) = 2Mn^2+(aq) + 8H2O(l) given the following standard reduction potentials MnO4^-(aq) + 8H^+(aq) = 5e^- ==> Mn^2+(aq) + 4 H2O(l) E naught = +1.52V Cd^2+(aq) + 2e^- ==> Cd(s) E ...
Saturday, April 11, 2009 at 11:01pm by Steve

Chemistry
1. I do not understand why this cannot go to equilibrium? Na2CO3(aq)+HCl(aq)->H2O(l)+CO2(g)+NaCl(aq) Please explain. 2. Are K subscript c the same as K subscript eq? Do they both stand for the equilibrium constant?
Monday, December 2, 2013 at 3:34pm by Anonymous

Chemistry
How many grams of H2(g) can theoretically be produced from a 5-g sample of magnesium metal and excess HCl(aq)?
Monday, April 2, 2012 at 12:30pm by Polly

Chemistry
What are the concentrations of A– and HA after 24 mL of 0.33 M hydrochloric acid solution is added to 86 mL of a solution that has [A– ]=0.67 M? Do NOT consider any equilibrium reactions in this problem. A–(aq) + HCl(aq) → HA(aq) + Cl–(aq) How do I calculate this problem...
Sunday, March 31, 2013 at 5:08pm by John

Chemistry II
What am I doing wrong? I am trying to balance the equation: NO3^-(aq)+Sn^2+(aq)-->Sn^4+(aq)+NO(g) here are the coefficients I have. what is wrong with them? 2NO3^-(aq)+3Sn^2+(aq)+8OH-(aq)-->3Sn^4+(aq)+2NO(g)+4H2O(l)
Tuesday, April 27, 2010 at 8:03pm by Carl

chemistry
Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)
Tuesday, March 1, 2011 at 9:23am by Jazmin

chemistry
Write a balanced chemical equation for the overall cell reaction represented as: a) Ag(s)|Ag^+(aq)||Sn^4+(aq), Sn^2+(aq)|Pt(s) b) Al(s)|Al^3+(aq)||Cu^2+(aq)|Cu(s) c) Pt(s)|Fe^2+(aq), Fe^3+(aq)||MnO4^-(aq),Mn^2+(aq)|Pt(s)
Tuesday, March 1, 2011 at 6:23pm by Jazmin

chemistry
The equation Mg(s) 2HCl(aq)---MgCl2 (aq) H2(g) is an example of which type of reaction?
Tuesday, July 29, 2008 at 11:43am by natasha

chemistry help!
I have a chemistry test tomorrow and I'm trying to study but none of these questions in the book make sense to me:( Help! 1. Commericially available concentrated sulfuric acid is 95% H2SO4 by mass and has a density of 1.84g/mL. How many milliliters of this acid are needed to ...
Sunday, October 18, 2009 at 12:53pm by Maycee

Chemistry
In accordance with Hessfs Law, manipulate the following equations and their ƒ’Hrxnfs to calculate ƒ’Hrxn for the reaction HClO4 + NH3 ¨ NH4ClO4... HClO4(aq)+ LiOH(aq) ¨ LiClO4(aq)+H2O(l) CH3COOH(aq)+ NH3(aq) ¨ NH4CH3COO(aq) CH3COOH(aq)+LiOH(aq)¨ LiCH3COO(aq)+H2O(l)
Sunday, July 7, 2013 at 3:21pm by Angela

Chemistry
Determine how many grams of active antacid ingredient AL(OH)3 would be necessary to neutralize the HCL in 50.0 mL of .0100 M HCL (an approximation of the conc. of HCL in the stomach) 3HCL9aq)+AL(OH)3(s)-> AlCL3 (aq) = 3H2O (L)
Tuesday, June 7, 2011 at 7:35pm by Vinny

chem
I got part 1: What is the pH of the solution created by combining 1.10 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? pH w/HCl =1.12 w/HC2H3O2(aq)= 3.94 But how do you do part two? What are the pH values if you take into ...
Thursday, April 29, 2010 at 12:13am by Adam

Chemistry
no, there's Fe in D for the first question..Fe(s)+8H+(aq)+MnO4–(aq)+Pt2+(aq)==> Mn2+(aq)+4H2O(l)+Fe2+(aq)+Pt(s)
Friday, April 18, 2008 at 11:37pm by Matt

Chemistry
Please help me with this one... What is the oxidizing agent in the following redox reaction: HNO3(aq) + K2CrO4(aq) + Fe(NO3)2(aq) -> KNO3(aq) + Fe(NO3)3(aq) + Cr(NO3)3(aq) + H2O(l) ?
Friday, February 25, 2011 at 12:45pm by Abigail

chemistry
Balance the follwoing chemical reaction in an acidic solution __H2O(l) + __H^+(aq)+ OH^-(aq)+ __ CR2O7^2-(aq) + __ Cl^-(aq)---> __ Cr^3-+ __Cl2(aq)+ __H2O(l) + __H^+(aq) + __ OH^-(aq)
Tuesday, April 22, 2008 at 7:44pm by Amandeep

Chemistry help please?
order these highest PH to the lowest PH Ca(OH)2(aq) HCN(aq) NH3(aq) LIOH(aq) HCI(aq)
Sunday, May 20, 2012 at 3:45pm by Sara

chemistry
CaCO3(s) + 2 HCl(aq) --> CaCl3(aq) + H2O(l) + CO2 It takes 19.26 mL of 0.6721 M HCl to completely react with the CaCO3. What is the mass of CaCO3 in the tablet? didnt mean to cal you
Sunday, November 11, 2012 at 8:01pm by Sheree'

chemistry
Write the molecular equation. CuCl2(aq) + 2NaOH(aq) ==> Cu(OH)2(s) + 2NaCl(aq) Then the net ionic equation follows: Cu^+2(aq) + 2Cl^-(aq) + 2Na^+(aq) + 2OH^-(aq) ==> Cu(OH)2(s) + 2Na^+(aq) + 2Cl^-(aq) Now cancel the ions common to both sides; i.e., cancel 2Cl^- and 2Na...
Saturday, October 6, 2007 at 9:23pm by DrBob222

Chemistry
Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)
Monday, March 18, 2013 at 3:11pm by Lindt

Chemistry
Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)
Monday, March 18, 2013 at 3:12pm by Lindt

Chemistry
Question 2 Marks: 2 How many grams of oxygen gas must react to give 174.3 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)
Monday, March 18, 2013 at 3:15pm by Lindt

gr 12 chem
Cu^+2 is paramagnetic and Zn^+2 is not. Think unpaired electrons in the 3d shell for Cu*II) and Zn(II).
Tuesday, March 30, 2010 at 4:44pm by DrBob222

Chemistry
ZnC2O4 ==> Zn^+ + SO4^-2 Ksp + (Zn^+2)(SO4^-2) Substitute the molar solubility into the Ksp expression and solve.
Monday, November 29, 2010 at 9:06pm by DrBob222

Chemistry
Brass is an alloy that is approximately 67% Cu and 33% Zn, by mass. How many grams of Cu and Zn are in a brass doorknocker weighing 2.2 pounds?
Friday, June 17, 2011 at 7:28pm by Ippy

Chemistry 114
You need to know the solubility rules to predict the products of some reactions. Here is a simplified set of rules. http://www.files.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html The second one is CuSO4(aq) + Pb(NO3)2(aq) ==> PbSO4(s) + Cu(NO3)2(aq) You turn this into an...
Monday, April 12, 2010 at 6:01am by DrBob222

chemistry
NH3(aq) + HCOOH(aq) ==> HCOONH4(aq) ==> HCOO^-(aq) + NH4^+(aq). Doesn't that look like C (although I put an extra step in to help in understanding what was going on)?
Wednesday, November 10, 2010 at 4:47pm by DrBob222

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