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July 29, 2016

Search: (NH4)3PO4

Number of results: 562

Chemistry
Ammonia, NH3, reacts with Phosphoric acid to produce Ammonium hydrogenphosphate, (NH4)2HPO4. What mass (in grams) of ammonia will react with 2.800E3 kg of Phosphoric acid?
October 27, 2014 by Amanda

AP Chem
How would you find a formula for a salt that contains NH4+ and is basic? I understand how to determine if a salt is acidic or basic but i don't know how you would go in reverse.
February 18, 2014 by Elizabeth

chemistry
Determine the of mole of water molecules in one mole of a sample of an iron containing (nh4)2so4. FeSO4. nH2O. titrate a solution of the iron containg (solution Y)
December 3, 2011 by fiona

chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by jason

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by Zoe

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by Zoe

chemistry 105
Complete and balance each of the following equations for gas-evolutions. Express answer as a chemical equation. Identify all the phases in your answer. HCl(aq)+K2SO3(aq)--> HCl(aq)+KHCO3(aq)--> HC2H3O2(aq)+NaHSO3(aq)--> (NH4)2SO4(aq)+KOH(aq)-->
October 10, 2011 by julie

Chemistry
Describe the ammonium ion, NH4+, and the sulfate ion, SO42-. What compounds would these ions form with potassium and fluoride ions? Write the formula units for the resulting compounds.
June 20, 2016 by Adimi

Chemistry- Writing Net Ionic equations
I need to write the net inonic equation for (NH4)2SO4(aq) and KNO2(aq). I need to know the reactants and the product. I worked it out and got: 2K+(aq) + SO4-(aq) ----> K(SO4)2(s)
March 1, 2010 by Tiffany

Chemistry 111
a) Write Bronsted acid-base equilibrium equations for the following: b) Show the acid-base conjugated species, labeling all species (1) HSO4- + C2O4-2 (2) HPO4-2 + NH4+
April 2, 2013 by Sean

Chemistry 2
Can someone please tell me which of the following I have wrong?? I know that one or more is incorrect, but I'm not sure which ones... Match the following Bronsted acids with their conjugate bases. Choices: SO42-, SO32-, CO32-, HPO42-, HPO32-, Cl-, F-, NO3-, NO2-, HSO4-, HSO3...
May 24, 2007 by Lindsay

Chemistry
1) Which ion(s) below would undergo hydrolysis in water? A) Cl- B) K+ C) NH4+ D) NO3- E) Two of the above My guess is C, but I'm not too sure about this one. 2) Calculate the [OH-] present in solution labeled 1.73 M methylamine. CH3NH3 + H2O --> CH3NH3+ + OH-. I get 2.76 x ...
May 1, 2014 by Amanda

Molar Mass Question
Hello, I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]26H2O] would i consider the molar mass of the water as well, why or why not?
November 15, 2010 by Moi

AP Chem
solid (NH4)2CO3 is placed in an evacuated container at 115C. When equilibrium is reached the total pressure inside the vessel is 0.473 atm. Some solid remain in the vessel at equilibrium. Calculate Kp.
October 28, 2014 by Megan

Chemistry
Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction quotient, Q?
January 27, 2015 by Anonymous

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
July 3, 2011 by ABCD

Chem
The coordination compound has five stereoisomers (geometric plus optical isomers). Select all that apply... A:NH4[Pt(NH3)Cl3] B: tris(ethylenediamine)cobalt(III) sulfate C: tetraaquadichloronickel(IV) chloride D: [Co(NH3)2(en)Cl2]Cl E: [Co(en)2Cl2]Br F: sodium hexacyanoferrate...
November 4, 2011 by Rachel

chemistry
Consider the following double displacement reactions. For each reaction, complete and balance the equation and give the net ionic equation. NH4Cl(aq)+Ca(NO3)2(aq) -> NH4(NO3)2+CaCl the second half of the equation is what I had done but I think its not right...
November 11, 2010 by Riley

Chem
Using general solubility rules, write the balanced molecular equation when the following aq solutions are mixed. Underline the formula of the solid. If no precipitation reaction is likely, explain why. A. NHY4Cl, H2SO4 B. K2CO3, SnCl4 C. NH4Cl, Pb(NO3)2 D. CuSO4, KOH E.Na3PO4...
June 25, 2008 by OliviaK

Chemistry 101
I don't remember my instructor going over this and the book isn't explaining it very well. Can anyone help answer these? Indicate the concentration of each ion or molecule present in the following solutions. 1. 0.30 M NaNO3 2. 1.5x10^-2 M MgSO4 3. 2.00x10-2 M C6H12O6 4. A ...
February 22, 2010 by Kelsey

Chemistry
Caluculate the mass of ferrous ammonium sulfate (Fe(NH4)2(SO4)2.6H2O) you would need to add to a 4.0 mL volumetric flask to make a solution that is 75 ppm. I've already identified that Fe is 14.24% of the Mohr's salt, but how would the conversion of that go to ppm? Ppm is mg/L...
October 1, 2015 by Ronnie

chemistry
500.0 g of ammonia react with 51.0 moles of sulfuric acid to produce ammonium sulfate. How many moles of excess sulfuric acid are left over after the reaction is complete? 2 NH3 (aq) + H2SO4(aq) → (NH4)2SO4 (aq)
March 22, 2011 by Anonymous

Science (Chemistry)
. Complete all the following for the reaction (NH4)2S + Cd(NO3)2 --> CdS(s) + NH4NO3 1. Balance this equation 2. Write the ionic equation 3. Write the net ionic equation
March 14, 2014 by Anonymous

Chemistry
Label the following reactions as combination, decomposition, displacement, precipitation, or acid-base reaction. Also whether each reaction is a redox or non redox reaction. SO2(g)+H2O(l)-> H2SO3(aq) NH3(aq)+HS(-)(aq)-> NH4(+)(aq)+S(2-) Na2O2(l)-> Na2O(l)+O2(g) 3S(2...
April 5, 2011 by sara

Chemistry
A 51.46 mL sample of an ammonia solution is analyzed by titration with HCl. The reaction is given below. NH3(aq) + H+(aq) NH4+(aq) It took 38.57 mL of 0.0984 M HCl to titrate (react completely with) the ammonia. What is the concentration of the original ammonia solution?
October 28, 2010 by Anonymous

Chem
Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0x10^6 kg HNO3 by the ...
January 26, 2007 by Shawn

chemistry
When a 3.90-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperature drops from 24.5C to 19.3C. Calculate DH (in kJ/mol NH4NO3) for the solution process NH4NO3(s) ---> NH4+(aq) + NO3-(aq) Assume that the specific heat of...
July 4, 2012 by Kevin

chemistry
A sample of NH4HS (s) is placed into a 2.65 L flask, containing 0.140 mols of NH3 (g). NH4++++>>nh3 (g) + h2s (g) KP = 0.108 wHAT will be the total gas pressure at 25 degrees in atm. I got about 1.361...i dont kno what im doing wrong. im multiplying the NH3 * H2S = ...
March 17, 2010 by anonymous

chemistry
A sample of NH4HS (s) is placed into a 2.65 L flask, containing 0.140 mols of NH3 (g). NH4++++>>nh3 (g) + h2s (g) KP = 0.108 wHAT will be the total gas pressure at 25 degrees in atm. I got about 1.361...i dont kno what im doing wrong. im multiplying the NH3 * H2S = ...
March 17, 2010 by anonymous

Chemistry
Are the reactants or the products favoured in the following reactions? a. CH3COOH with NH3? b. HS- with HCO3-? c. HNO2 with NH3 d. NH4+ with F- e. C6H5COOH with CH3COO- f. H2SO3 with HCO3- g. H2CO3 with SO32- h. H2SO3 with SO32-
May 13, 2012 by Andrea

chemistry
I need help with these questions 1. Calculate the percentage by mass of potassium in potassium sulfate K2 SO4 2. calculate the percentage by mass of nitrogen in ammonium nitrate Nh4 No3
January 25, 2015 by Victoria

chem
NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br. I dont even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)
July 24, 2009 by Lena

chemistry
Which reactants in the reactions below are acting as Brnsted-Lowry bases? NH4 +(aq) + OH−(aq) <-> NH3(aq) + H2O(l) H2PO4 −(aq) + H2O(l) <-> H3O+(aq) + HPO4 2−(aq) is the answer H2O and the H3O+
July 6, 2010 by Jin

chemistry
A 0.0875 M solution of aqueous ammonia was titrated with a solution of sulphuric acid. If 25.00 mL of the ammonia solution required 30.66 mL of the acid to reach the end-point, calculate the molarity of the acid. NH3(aq) + H2SO4(aq) (NH4)2SO4(aq)
January 10, 2008 by caleb

chem
How do you balance this equation?: (NH4)2SO4+Ca(OH)2==>CaSO4+NH3+H20 Thanks! 2 NH3 2H2O Others are ones. (NH)2SO4 + Ca(OH)2 --> CaSO4+2NH3+2H2O Thanks!
March 22, 2007 by Fidelia

Chemistry
Calculate the pH of: a) ammonia, 0.1M, in water b) ammonium chloride, 0.1M, in water c) a buffer solution containing ammonia (0.1M)and ammonium chloride (0.01M) For NH4^+, pKa = 9.25
September 26, 2008 by Abby

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)→2NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 24.0∘C and 1.02atm by the complete decomposition of 11.9g of ammonium carbonate. Please show ...
October 25, 2014 by Elizabeth

Chem
Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0x10^6 kg HNO3 by the ...
February 2, 2007 by Shawn

chem
(a) When a 4.75-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter (see figure), the temperature drops from 23.0C to 16.6C. Calculate H (in kJ/mol NH4NO3) for the solution process NH4NO3(s) NH4+(aq) + NO3−(aq). Assume ...
November 6, 2012 by hannah

ap chem
NH3 + H20 <---> NH4+ + OH- this is aqueous solution. In 0.0180 M nH3, THE [OH-] is 5.60 X 10^-4 M. it is assumed that the volumes are additive. Determine the value of the base ionization constant, kb, for NH3. i am not sure how to approach this problem. i dont udnerstand...
May 2, 2010 by rav

Chemistry (Aqueous Solutions)
This one stumped me alot... Aqueous solutions of a compound did not form precipitates with Cl-, Br-, I-, SO4 2-, CO3 2-, PO4 3-, OH-, or S 2-. This highly water-soluble compound produced the foul-smelling gas H2S when the solution was acidified. This compund is __?__. a. Pb(...
April 5, 2010 by Macey

Chem answer check/ help
For each of the following water-soluble compounds, indicate the ions present in an aqueous solution: NaI K2SO4 NaCN Ba(OH)2 (NH4)2SO4 would the answer to NaI be Na+ I-? Should there be more to my answer? Would K2SO4 be K+ SO-? Thanks for the explanation.
February 22, 2010 by Jacob

Chemistry
Name the following ionic compounds: a. Li2O Lithium Oxide b. NaClO Sodium Hypochlorite c. Sr(CN)2 Strontium Cyanide d. Cr(OH)3 Chromium Hydroxide e. Fe(CO3)3 Iron (III) Carbonate f. Co(NO3)2 Cobalt Nitrate g. (NH4)2SO3 Ammonium Sulfite h. NaH2PO4 Sodium Dihydrogen Phosphate i...
September 16, 2009 by Anonymous

Chemistry
Write a balanced chemical equation (molecular equation). Write a total ionic equation. write a net ionic equation. (NH4)2 SO4(aq)+Na2CO3(aq) -->
March 15, 2011 by Jake

biochem
Which of the following pairs of compounds would NOT make a hydrogen bond with each other? CH3 and H20 H20 and HF NH4 and HF H2O and CH3COOH all of the following would make hydrogen bonds
January 27, 2013 by Jen

Chemistry
A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was precipitated. Calculate the ...
September 20, 2012 by Bob

chem -repost for bobpursley
Posted by polkadot on Friday, April 8, 2011 at 8:46pm. Can someone please help me by explaining and correcting me? 1) A 0.057M solution of a weak acid has a pH of 4.93. Determine the ionization constant, Ka, of the acid. a) 2.1 x 10^-4 b) 2.4 x 10^-9 c) 4.1 x 10^-8 d) 2.8 x 10...
April 9, 2011 by polkadot

Chemistry 3
How is it possible for me to tell which of these solutes will produce an acidic solution when dissolved in water? LiOH CH3CO2K H2SO3 KOH NaOH NH4NO3 NaOH NaOH can't be the only one... Molecules that produce OH^- when dissolved in water will be basic. Examples:LiOH, KOH, NaOH, ...
May 24, 2007 by Lindsay

Cemistry
Hi, I've been trying to solve this chemical equation for the last 30 minutes and am only confusing myself. I am wondering if the product I obtained is correct. The question is to write a balanced equation for the below reaction and be sure to indicate the states and if there ...
March 16, 2012 by Julie

Chemistry-Repost for DrBob222
The reaction OH- + NH4+ = H20 + NH3 is kinetically first order in both reactants' concentrations. The rate constant is 2e10 1/M s. If 50 ml of .01 M NaOH is mixed with 50 ml of .01 M NH4CL, find the time required for the OH- concentration to reach 1e-4 M. Your answer: It ...
March 21, 2014 by Anonymous

chemistry
!. Which of the following structures would you expect to have a net dipole moment? HC(triple bond)CH NH4+ H2C(double bond)O BCl3 2. Rank the sp, sp2, and sp3 orbitals in order of decreasing (highest to lowest) energy. a)sp> sp2>sp3 b)sp3>sp2>sp c)sp2>sp>sp3 d...
February 15, 2013 by Maura

Chemistry-confused
All alkalis produce hydroxide ions when dissolved in water. How do we write the chemical equation for aqueous ammonia? I see some textbooks write it as ammonia gas dissolving in water to form ammonium ions and hydroxide ions. NH3(g)+ H2O(l) ==> NH4+(aq) + OH-(aq)
April 10, 2009 by janice

chemistry
A variety of ions including Na+, K+, NH4 +, Pb2+, Fe2+, NO3 −, Cl−, Br−, S2−, and CO3 2− are mixed in a beaker of water. If you analyzed the precipitates, which substances would you expect to find? 1. PbS and FeCO3 2. FeCl2 and KCl 3. NaBr and Pb(...
September 19, 2012 by cheri

CHEMISTRY
NH3(g) + H2O(l) <==> NH4+ (aq) + OH- (aq) a) According to delta H ( Enthalpy ) , which direction the equation will shift ? b) According to Entropy , which direction the equation will shift ? c) Assuming that delta G is positive , then delta S is greater than delta H or ...
July 14, 2014 by MAD

Chemistry PLEASE HELP!!!
'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume of NH4Cl solution required to achieve a buffer at ph=9.5? Ka of NH4=5.6x10^-10. The textbook says ...
December 11, 2012 by jemima

Chemistry
Hi; I'm just wondering, I need to write the dissocation equation for NH3 so that I can get Kb, and I just want to make sure that I am on the write track. I know that when some solids dissociate they just go from say CaCO3 --> CaO + CO2, but for this I'm wondering because it...
November 12, 2007 by Tracy

CHEMISTRY
In the analysis of food, the nitrogen from the protein is sometimes converted into ammonia which is titrated against a strong acid. Given that the final NH3 concentration (approximate) is 0.2M and that pKa for NH4+ is 9.2, choose the best indicator for such a titration A. ...
May 29, 2010 by Lucinda

college chemistry
In the analysis of food, the nitrogen from the protein is sometimes converted into ammonia which is titrated against a strong acid. Given that the final NH3 concentration (approximate) is 0.2M and that pKa for NH4+ is 9.2, choose the best indicator for such a titration ...
May 27, 2010 by Lucinda

chemistry
Hi, Can anyone suggest a protocol for preparing 1 Litre ammonical solution (pH 7.8, NH4-N, 3000 mg/L) from NH4Cl and NaOH? I have worked out that I need 10.7g NH4CL and 0.45 g NaOH -is this correct? I am assuming that 1st step is to prepare 0.45 g NaoH in 0.5 L distilled water...
March 17, 2016 by niko

Science
hey can you tell the compounds names NOT their element names. 2HCL 2H2O 3NiBr2 2AlBr3 3Ni 3O2 2Al2O3 CaCl2 CaF2 AgNO3 KCl AgCl KNO3 2NH3 2H2O2 (NH4)2SO4 Ba(NO3)2 BaSO4 2NH4NO3 MgI2 Br2 MgBr SO3 H2SO4 6KCl Zn3(PO4)2 3ZnCl2 2K3PO4 or at least find me a website to find their names
October 9, 2008 by Alejandro

Chemistry
Hi, i'm really desperate! could anyone please help me with this question, I'm stumped. 'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume of NH4Cl ...
December 11, 2012 by emily

Limiting Reagents
in the synthesis of FeC2O4 (dot) 2H2O, which reagent would be the limiting reagent? FeSO4(NH4)2SO4 (dot) 6H2O - 2.68g. H2C2O4 (dot) 2H2O - 1.99g. I just want to know how the H2Os would effect finding the limiting reagent. As in do they change the ratio? The molecular mass? ...
May 15, 2011 by Annie

Check 1 question.
Help please!i'm not sure if i'm right. Honestly i'm not that confident about most of my work. In which of the following thermochemical equations would the deltaH be considered a heat of solution? C6H6 (s)--> C6H6 (l), deltaH = +9.87 kJ 2C8H18(l) + 25O2 (g)-->16CO2 (g...
June 22, 2012 by Anonymous

Chemistry
Sodium Azide, (NaN3), the conjugate base of hydrazoic acid, is sometimes added to water to kill bacteria. Given a 0.010 M solution of sodium azide, A) What is the [H+] concentration from the Azide base rxn? B) Given a 0.01 M NH4+, what is the [H+]? C) What is the hydrozoic ...
May 31, 2013 by Lovey dovey

CHM1045
NH4NO3(s) right arrow NH4+(aq) + NO3−(aq) In order to measure the enthalpy change for this reaction, 1.21 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8C and the final temperature (after the solid dissolves) is 22....
March 30, 2013 by Philip Golden

Plese Help
IM sorry what i meant was their compounds hydrogen peroxide or carbon dioxide or fool's gold. 2HCL 2H2O 3NiBr2 2AlBr3 3Ni 3O2 2Al2O3 CaCl2 CaF2 AgNO3 KCl AgCl KNO3 2NH3 2H2O2 (NH4)2SO4 Ba(NO3)2 BaSO4 2NH4NO3 MgI2 Br2 MgBr SO3 H2SO4 6KCl Zn3(PO4)2 3ZnCl2 2K3PO4 or at least find...
October 9, 2008 by Alejandro

chem
A solution is prepared by dissolving 16.5 g ammonium sulfate in enough water to make 145.0 mL of stock solution. A 10.50 mL sample of this stock solution is added to 57.70 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution. NH4+
November 3, 2007 by mel

chem
the balance equation for the reaction of aqueous sulfuric acid with aqueous ammonia is 2NH3(aq)+ H2SO4(aq) -> (NH4)2SO4(aq) 1. what volume of 0.250M sulfuric acid solution would be needed to react completely with 18.00mL of 0.350M ammonia solution? 2. what mass of ammonium ...
April 15, 2014 by Jen

chemistry
I'm asked to write the molecular, ionic, and net ionic equation. Then, I'm supposed to provide an explaination of conductivities observed. Below I have written only the net ionic equation and a brief explanation I think of the first two conductivities observed. However, I did ...
July 1, 2008 by Anonymous

chem
Is ammonium hydroxide a strong or weak base and how do you know that? Technically there is no such thing as ammonium hydroxide. NH3 gas (ammonia gas) dissolves easily in water and produces the NH4^+ and the OH^- from the reaction with water. It is a weak base because that ...
May 16, 2007 by Horacio

Chemistry
The standard heat of formation of solid ammonium nitrate. NH4NO3 is -330kJ/mol. The equation that represents this process is: a) N2(g)+ 4H2(g)+3O2(g)->NH4NO3+ 330kJ b) 2N(g)+ 4H(g)+ 3O(g)-> NH4NO3+ 330kJ c) NH4(g)+ NO3(g)-> NH4NO3+ 330kJ d) 0.5N2(g)+ 2H2(g)+ 1.5O2(g...
July 24, 2010 by Bobby

Organic Chemistry
What is the hybridization of all the atoms (other than hydrogen) in each of the following species? a) NH3 e) +NH4 i) H3O+ b) BH3 f) +CH3 j)H2C=O c) -CH3 g) HCN d)*CH3 h) C(CH3)4 There are a couple I don't know how to do. Please help? Did I do the other correctly? Thanks. a) ...
June 14, 2015 by Michelle

chemistry SERIOUS HELP N PROOFREADING
ok it says give the formula for this one Hydronitric acid, I put H3N For Iron (III) chloride I put Fe3Cl Silver acetrate i put AG1C2 Ca(OH02 i put calcium oxide for CCL4 I had no clue Mercury (II) oxide i put HG2O NaClO3 I put Sodium chlorate for (NH4)2SO4 i put hydronitrate ...
March 4, 2008 by john

Chemistry
The question is: what is the ratio [NH3/[NH4+] in an ammonia/ammonium chloride buffer solution with pH= 10.00? (pKa for ammonia=9.25) When working the problem, I tried to solve it a bit backwards, in that I plugged in each of the multiple choices I was given to see which would...
April 9, 2013 by Marcus

chemistry
Is this a buffer system? NH3/(NH4)2SO4? It is formed by mixing NH3 (weak base) and a strong acid (H2SO4), but according to my worksheet it is not a buffer system. Why is this so? Isnt it a buffer as long as it consists of a weak base and its salt of a strong acid? Please do ...
January 13, 2011 by seth

Chemistry
The question is what is the molecular equation for acetic acid mixed with ammonia, sulfuric acid mixed with barium hydroxide, copper (II) sulfate mixed with hydrosulfuric acid, and copper (II) acetate mixed with hydrosulfuric acid. I've attempted some but for the last two i ...
March 16, 2010 by Bach

CHEMISTRY
Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the nitrogen in organic ...
August 1, 2013 by Kris

Chemistry
Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) -> C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the nitrogen in organic compounds into nitrate ...
November 5, 2012 by Frances

Chemistry
Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) -> C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the nitrogen in organic compounds into nitrate ...
November 5, 2012 by Frances

chemistry
1a) why is it advisable to prepare a slightly more conc. soln. of kMnO4 when preparing its standard solution? b) what else do u have to do? (2). what will happen if NH4Cl is used to standardized the KMnO4. (3a). A student noticed traces of brown deposit during the KMnO4 to (...
September 17, 2014 by G. Tracy

Chemistry
Bacterial digestion is an economical method of sewage treatment. The reaction 5CO2(g) + 55NH4+(aq) + 76O2(g) --bacteria--> C5H7O2N(s)[bacterial tissue] + 54NO2-(aq) + 52H2O(l) + 109H+(aq) is an intermediate step in the conversion of the nitrogen in organic compounds into ...
August 27, 2008 by Lex

Chemistry
Which of the following reactions are spontaneous (favorable)? A. DHAP ---> glyceraldehyde - 3 - phosphate ΔG=3.8 kJ/mol B. C2H4+H2 ----> C2H6 ΔG=-150.97kJ/mol C. C4H4O5 ---> C4H2O4+H2O ΔG=3.1 kJ/mol D. L-malata + NAD + ---> oxalocacetate + NADH+H...
October 25, 2014 by whit

chemistry
NH4NO3(s) NH4+(aq) + NO3−(aq) In order to measure the enthalpy change for this reaction above, 1.07 g of NH4NO3 is dissolved in enough water to make 25.0 mL of solution. The initial temperature is 25.8C and the final temperature (after the solid dissolves) is 22.4C. ...
November 16, 2012 by DeeDee

Chemistry
Calculate the molarity of a solution made by dissolving 0.0715 mol Na2SO4 in enough water to form 550 mL of solution. While we're at it... How many milliliters of 10.6 M HCl solution are needed to obtain 0.205 mol of HCl? Also... How many grams of solute are present in 50.0 mL...
September 28, 2010 by Alex

College Chemistry 100
The topic is about acids, bases, and salts. The two equations are given: H20 + HCL -> H30 + CL; H20 + HC2H3O2 <-> H30 + C2H3O2 The question is: A solution with a volume of one liter contains 0.45 mole HC2H3O2 and 0.48 mole C2H3O2 ion. (Ka for HC2H302 is 1.82 x 10-5) ...
November 11, 2010 by Marie

Chemistry
A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3 with 50 mL of 0.300 NH4Cl. The pKb of NH3 is 4.74. NH3 + H2O-> NH4+ +OH- 7.50 mL of 0.125 M HCl is added to the 100 mL of the buffer solution. Calculate the concentration of NH3 and NH4Cl for the buffer solution...
April 10, 2014 by Dee

Chemistry
Bacterial digestion is an economical method of sewage treatment. 5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow Bacteria C5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq) bacterial tissue The above reaction is an intermediate step in the conversion of the nitrogen in organic ...
November 5, 2012 by Frances

Chemistry
Sodium Chloride is the LEAST soluble in which of the following liquids? a. H2O b. CCl4 c. HF d. CH3OH e. CH3OOH I know NaCl is a polar molecule...and a dipole-dipole IMF bond? My guess is b because it's nonpolar and I think it's a London Dispersion IMF. Is this right? Also, ...
November 30, 2009 by Nikki

Chemistry
Calculate the concentrations of S2O8 2-, I-, S2O32 2- in moles per litre of reaction mixture given the following: 20mL of 0.1 M (NH4)2S2O8 added to: 20mL of 0.2M KI 10mL of 0.01M Na2S2O3 5mL 0.2% starch Also, calculate -(delta)S2O8 2- that is, how much S2O8 2- is used up (...
January 24, 2011 by Rachel

analytical chemistry
Write balanced net-ionic equations to describe: a. The oxidation of Mn2+ to MnO4- by ammonium peroxydisulfate [(NH4)2S2O8] b. The air-oxidation of HAsO32- to HAsO42- c. The oxidation of Ce3+ to Ce4+ by sodium bismuthate (NaBiO3) Write balanced net-ionic equations to describe: ...
February 14, 2013 by Anonymous

CHEM
am lost. I have to create a buffer using NH4CL and 0.10 M NH3. I have to chose how much of the reagent to use in order to get a concentration between 0.01 and .5 M. Then after I come up with the recipe for that I have to calculate the pH based on the concentrations using the ...
April 5, 2016 by Erica

Chemistry
Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look like 2Fe^+3 + 3SO4^-...
October 4, 2015 by Christine

Chemistry
Write the dissociation equation for iron(II) ammonium sulfate hexahydrate in water . Fe(NH4)2(SO4)2 * 6H2O --> __?________ I know dissociate means to take apart so for example; NaCl would look like Na^+ + Cl^- And another one like: Fe2(SO4)3 would look like 2Fe^+3 + 3SO4^-...
October 4, 2015 by Christine

chemistry
Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M HCL (hydrochloric ...
June 11, 2009 by Chemically Confused

Chemistry, reactions w/ water
Write the equation for the reaction of each of the following with water. a) HCl b) CH3COOH c) NaOH d) NH3 Are these correct? a. HCl (aq) + H2O (l) --> H3O+ (aq) + Cl- (aq) b. CH3COOH (aq) + H2O (l) --> CH3COO- (aq) + H3O+ (aq) c. NaOH (aq) + H2O (l) --> Na+ + OH- + ...
May 6, 2008 by Marissa

Aqueous Stoichiometry
Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M HCL (hydrochloric ...
June 11, 2009 by Chemically Confused

Chemistry
Calculate the pH of the solution that is prepared by mixing 26.06g of ammonium iodide (MM=144.942) and 5.08g of ammonia (MM=17.034g) in enough 0.066 M HCI to produce 1.00L of solution. Kb(NH3)=1.76x10^-5 I converted 24.06g and 5.08g to moles and i now I have to set up an ice ...
December 1, 2014 by nns40760

Chemistry help
I need help, I don't know how to do these. Single Displacement Fe+S yeilds ___ Mg+O2 yeilds___ Cu+O2 yeilds___ CaO+H2O yeilds___ Decomposition HgO yeilds___ NaHCO3 yeilds___ CuSO4+5H2Oyeilds___ Single Displacement Zn+HCl yeilds___ Zn+CuSO4 yeilds___ NaBr+Cl2 yeilds___ Ca+H2O ...
November 26, 2007 by Rai

Science URGENT
Write down the number of hydrogen and oxygen atoms of the following H2O 3H2O 5H2O Write down the number of carbon, hydrogen and oxygen atoms: C6H12O6 2C6H12O6 10C6H12O6 Write down the number of molybdenum, oxygen and hydrogen atoms: Mo(OH)4 3Mo(OH)4 5Mo(OH)4 Write the Number ...
March 27, 2014 by Madhu

chemistry
which of the following compounds contains the lowest percentage by mass of nitrogen? 1) NH4NO3 2) (NH4)2 SO4 3) NaNO3 4) NH3 can someone please help me??what method should i use?how do i do this? Find the molar mass of each compound by adding the molar masses of every atom (...
May 27, 2007 by Emma

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