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April 27, 2015

Search: Acetic acid is the active ingredient in vinegar. In a solution of acetic acid the following equilibrium is established: HC2H3O2

Number of results: 61,804

Econ MC
Externalities cause markets to a. fail to allocate resources efficiently. b. cause price to be different than the equilibrium price. c. benefit producers at the expense of consumers. d. cause markets to operate more equitably. I think the answer is a)?? I agree but b seems ...
March 9, 2007 by Anonymous

chemistry
Dose the law of conservation work when doing an expirement with vinegar and baking soda.
February 19, 2009 by jaz

Chemistry
How can you prove that mass is being conserved when adding baking soda to vinegar?
December 24, 2009 by Ronnie

Chemistry
Why is it important for a company manufacturing vinegar to regularly check the molarity of its product?
May 14, 2010 by Nessy

Chemistry
why is it important for company manufacturing vinegar to regularly check the molarity of its product?
May 17, 2010 by Hellen

chemistry
Why is it important for a company manufacturing vinegar to regularly check the molarity of its product?
June 1, 2010 by Bob

Science =____= ASAP!!!
Is Adding Vinegar to Yeast A Physical or a Chemical Change????
November 24, 2010 by Sumaiya

science
Why doesn't the sand from california beaches' result in froth and bubbles when you pour vinegar on it?
January 17, 2011 by tiff

Chemistry
How many grams of CH3COOH are present in 2.5^3 of vinegar. Also, what is the formula needed to solve? Thanks!
March 5, 2011 by Steven

chemistry
what is the average volume of vinegar needed to exactly neutralise 10.0mL of NaOH (aq)?
August 31, 2011 by cleetus

Chemistry
How much mL of 0.2 M NaOH are needed to titrate vinegar while doing a titration with Phenolphthalein?
April 27, 2013 by Shashi

Chemistry
How much mL of 0.2 M NaOH are needed to titrate vinegar while doing a titration with Phenolphthalein?
April 27, 2013 by Shashi

chemistry
Can anyone please help? ive been asked to write a balanced chemical equation for the breakdown of seleniuos acid H2SeO3 in water and to decuce the charge on the other ion that is formed. Thanks :) H2SeO3 (aq) ==> 2H+(aq) + SeO3=(aq)
February 5, 2007 by bertie

biochemistry
List 4 different ways in which the function of hemoglobin could be changed by a single amino acid substitution. and i cant think of a single way because this question doesnt elaborate much further... can someone please help?
January 31, 2008 by Jonny

chemistry
hi this is a question for my lab. explain why the addition of bromine to trans-cinnamic acid takes place more slowly than the addition of Br2 to a normal alkene like 3-hexene or cyclohexene thankss
January 26, 2009 by steve

Chemistry
Sorry I accidently hit enter and it posted my question before I was finished... What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow)
March 21, 2010 by Bobby

Chem
How do I go about solving this reaction? H2SO4 + NaCO3 = NaSO4 +CO2 + H2O If 150.0g of sulfuric acid is spilled, what is the minimum number of sodium carbonate that have to be added to complete the reaction?
October 30, 2010 by Sheff

Chemistry
A 10.0 mL sample of 12.1 M hydrochloric acid is added to 90.0 mL of distilled water and added to a sealed 1.04 L reaction vessel containing 1.463 g of calcium hydrogencarbonate at 22.1C and 743 mmHg. What is the pressure of carbon dioxide gas?
December 15, 2010 by Millie

chemistry)):
OMG! I'M SO CONFUSED! Like okay, the question is to write the formulae for the two acids formed when Chlorine is dissolved in water and I like really can't find anything BUT hypochlorous acid but that's just ONE!)):
June 17, 2011 by tonya((:

chemistry
The enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kJ/mol of water produced. How much energy will be released when 185.0 mL of 0.400 M HCl is mixed with 152.5 mL of 0.500 M NaOH?
November 13, 2011 by Bill

Chemistry
How would you make 100mL of tartrate buffer, pH 3.5, from 0.100 M tartaric acid, 1M NaOH and deionized and distilled H2O? You need to consider the ionization of two the two acidic groups separately.
January 20, 2012 by Elle

Chemistry
How would you make 100mL of tartrate buffer, pH 3.5, from 0.100 M tartaric acid, 1M NaOH and deionized and distilled H2O? You need to consider the ionization of two the two acidic groups separately.
January 22, 2012 by Elle

Chemistry
When you use UV Vis to determine the purity of the product- how does knowing the amount of salicylic acid help? Do you only use this when you know (after adding Fe3+) that the aspirin isn't pure? I know there is a very simple answer to this question...
June 9, 2012 by mish

Chem
I was asked to list materials with different structures and exhibit different properties. I thought of water and salt, muriatic acid and laughing gas. Am I correct? I need two more. Please help.
July 12, 2013 by Kim

chemistry 2
Calculate the relative concentrations of o-ethylbenzoic acid (pKa 3.79) and potassium o-ethylbenzoate that are needed to prepare a pH 4.0 buffer I know to set up hassle equation but when i get .21=log[a-/ha] i get lost because i was not given concentrations .. please help ...
July 28, 2013 by amber

math
1.64g of a mixture of cac03 and mhco3 was dissolved in 50ml of 0.8M hcl. The excess of acid required 16ml of 0.25M naoh for neutralization. Calculate the percentage of cac03 and mgc03 in the sample Who helps me
December 21, 2013 by Fai

Chemistry
Please help me write these two balanced equations. Dissolution of rust, Fe2O3, by sulfuric acid. and Ammonium nitrite reacts with oxygen to form ammonium nitrate. Any help would be awesome, thankyou.
April 30, 2014 by Susan

chemistry
The chemical reaction for dissociation of an acid is: HA + H2O → H3O+ + A- Assuming all of the hydronium ion (calculated in in the previous problem) comes from this reaction, what is the concentration of conjugate base, [A-], in this system?
May 4, 2014 by sarah

chemistry
If a saline solution has a concentration of 0.25 g per mL, calculate the following. a) The concentration of this solution in %w/v. b) The concentration of this solution in grams per litre (g/L). c) The concentration of this solution in milligrams per mL (mg/mL).
November 7, 2012 by Hannah

Chem
Final question.. An alloy used in aircraft construction consists of aluminium, copper and magnesium. An 11.34g sample of alloy was treated with alkali to dissolve the aluminium, leaving a residue of mass 2.73g. This residue was treated with dilute hydrochloric acid solution to...
January 27, 2007 by atriletz

Chemistry
In the reaction Ca(H2O)+2 6 + H2O ! Ca(H2O)5(OH)+ + H3O+ the calcium compound on the left acts accord- ing to the Bronsted-Lowry theory as 1. a base. 2. an acid. 3. a salt. 4. a solvent.
March 22, 2011 by Anonymous

chemistry
5. The industrial production of hydroiodic acid takes place by treatment of iodine with hydrazine (N2H4): 2I2 + N2H4 → 4HI + N2 a.How many grams of I2 are needed to react with 36.7 g of N2H4
November 28, 2011 by davian

Chemistry
The fluoride ion concentration in a saturated solution of magnesium fluoride, MgF2, is 2.3 10-3 M. Calculate the value for the equilibrium constant.
May 5, 2014 by Harry

chemistry
Taking note of the equilibrium 4HCl(g) + O2(g) ----> 2H2(g) + 2Cl2(g). What would be the the equilibrium law expression for the balanced chemical equation?
May 25, 2008 by Johnathan

Chemistry
In an esterification reaction, how does one tell when its reached equilibrium? Like what sign could you use to measure the rate at which it gets to equilibrium?
December 4, 2011 by Lauren

Chemistry
In an esterification reaction, how does one tell when its reached equilibrium? Like what sign could you use to measure the rate at which it gets to equilibrium?
December 4, 2011 by Lauren

Chemistry
Consider the reaction 3X + Y ⇔ 2W + Z. At equilibrium, [X] is 7.0 M, [Y] is 6.0 M, [W] is 5.0 M and [Z] is 7.0 M at 298 K. The value of the equilibrium constant at this temperature is: a) 0.085 b) 0.560 c) 1.800 d) 11.760
May 15, 2012 by Andrea

BIOLOGY
A SALT IS OBTAINED AS A REACTION BETWEEN A SALT (and water) IS OBTAINED AS A REACTION BETWEEN a base and an acid. See: http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/acidbase.html http://lrs.ed.uiuc.edu/students/erlinger/water/background/ph.html I hope this helps. Thanks ...
September 30, 2006 by CAROLINE

business Communication
1. Which of the following statements explains why threats are NOT effective for motivating people? A. Threats reduce tension. B. Threats ensure that appropriate actions are not abandoned. C. Threats produce permanent change. D. Threats provoke counteraggression. I think the ...
July 29, 2012 by Ron

Economics
1. Your country faces the following In the product market: IS = 6,752 - 37Y In the money market: LM = 1.75 In the BOP market: BP = -684 + 62Y a. Graph the above conditions. Is this an example of the classical case? If yes, explain. If no, show how it would look if it were the ...
December 7, 2012 by Eric

chemistry
sulfur trioxide gas dissociates into sulfer dioxide gas and oxygen gas at 1250 degrees C. In an experiment, 3.6 moles of sulfur trioxide were placed into an evacuated 3.0-L flask. THe concentration of sulfur dioxide gas measured at equilibrium was found to be 0.20 M. What is ...
April 29, 2007 by alexa

science
If acid rain falls on people it burns their skin. What else does it do on people other than burn your skin?
October 21, 2007 by Jenny

Chemistry
The enthalpy of combustion of benzoic acid is 26.4 kJ/g. What is the enthalpy of combustion expressed in joules per kilogram?
January 18, 2012 by Cynthia

Help Please! Science
Stomach acid (1.5) is 750 times for acidic than tomatoes (4.0). Can you explain to me why it is 750 times?
January 27, 2013 by Anonymous

Chemistry
3.91 mol of magnesium and 3.91 mol of hydrochloric acid are reacted, how many grams of magnesium chloride will be produced?
July 30, 2013 by Oliver

pharmacy tech.
When using a 1% cream and a 6% cream to produce a 4% cream, how many parts of each initial ingredient will be needed?
August 5, 2012 by blackpearl07

pharmacy math
when using a 2 % cream and a 5% cream to produce a 4% cream how many part of each initiial ingredient are needed?
August 12, 2012 by cleondra

pharmacy tech.
When using a 2% cream and a 5% cream to produce a 4% cream how many part of each initial ingredient are needed?
August 12, 2012 by blackpearl07

Microeconomics
Search: Consider two resource markets in which the demand curves slope downward. In market A, the supply curve is horizontal, equilibrium price is $6, and 100 units of the resource are hired. In market B, the supply curve is vertical, equilibrium price is $20, and 30 units of ...
April 24, 2011 by Elizabeth

Chemistry
In lab we did thermochemistry, where we are supposed to find the heats of solution, heat change of calorimeter and molar heat solution of the salt. I calculated that the calorimeter constant for the water we had was 883.194 Joules. We took 1/10 of a mole of NH4Cl and tried to ...
October 31, 2010 by Rani

Analytical chemistry
A Kjeldahl analysis was preformed upon a 0.055 g sample of impure biguanide (C2H7N5, fw=101.1). The liberated ammonia, collected in 40 mL of 4% boric acid was titrated with 19.51 mL of 0.1060 M HCl. Calculate the percentage of biguanide in the sample. (Result: 76%) This is how...
August 1, 2013 by Gloria

9th Grade Math
For my hw i have to graph the following equations 1) x - 3y -5 = 0 and 2x = 1 - 3y 2) y - 3x =5 and 3x = 7 + y 3) x = 3y and x +2 = 11 4) y = 2/5x + 1 and x + 2y +11 After done graphing the equations i have to state if there are zero, one, or many solutions. I have already ...
March 16, 2009 by HELP

Pre-Algebra
Equation M: y = 3x + 4 Equation P: y = 3x + 7 Which of the following options is true about the solution to the given set of equations? No solution One solution Two solutions Ininite solutions I thought it was infinite solutions but i got the answer wrong.
March 20, 2015 by Anna

English
Can someone check if the following questions are grammatically correct? Thank you. 1)Please Henry the VIII rule by focusing on the following: -Why he broke ties with the church -What the Act of Supremacy established -What political and social changes the reformation brought ...
January 20, 2014 by Frank

physics
A mass m is attached to the end of a spring (constant k). The mass is given an initial displacement x0 from equilibrium, and an initial speed v0. Ignoring friction and the mass of the spring, use energy methods to find the following in terms of the given quantities. (Use x_0 ...
November 7, 2010 by Lily

Chemistry
when dissolved in an aqeous solution, which of the following salts will yield an acidic solution? NH4Cl, NaClO4, Na2S, MgBr2, Ba(CH3CO2)2
March 22, 2010 by james

chemistry
calculate the potential of silver electrode in a contact with the following a/ solution that is 0.0150M in I2 and saturated with AgI b/solution that is 0.0040 M in CN- and 0.0600M in Ag(CN)2^-
June 7, 2011 by lyn

maths
find the general solution of the following first order differential equation. t*(dy/dt) = (-y/t) + ((exp(1/t)/t^3) could you show steps in working to solution.
October 26, 2011 by ricky

Chemistry
Please Help me with my chemistry Review I have a test tommorow? Please help me with my review my test average is low and i need at least a b to pass the class for the six weeks I am freaking out!!!! I care more about showing work i dont want answers I just want help on how to ...
February 28, 2008 by anon

biology
Minerals ener the plant through the soil solution. SOme are passively carried along with the ater that is taken up. Plants can also selectively absorb minerals and accumulate them. This requires active transport across a cell membrane. If it were not for the Casparian strip of...
April 10, 2008 by natash

Science chemistry
Assume 2.5 grams of benzion and 12.0 mL of 15.8 M nitric acid (density = 1.51 g/mL) was used in the experiment . What is the mole to mole ratio of benzion and nitrate ion.
April 27, 2010 by Joe

chemistry
max electrostatic potential is where there are low electron density, does it mean that the larger the number of max potential indicates a strong acid strength
May 4, 2010 by bme1

Chemistry
here is the equation:Zn(s)+2HCl(aq)-->ZnCl2(aq)+H2(aq).If 20.0 moles of zinc react with excess hydrochloric acid. how many moles of zinc chloride are produced?....thxxx
May 28, 2010 by Pierrysen

chemistry
Aqueous sulfuric acid is neutralized by aqueous potassium hydroxide. Express your answer as an ionic equation. Identify all of the phases in your answer.
October 12, 2010 by Missy

Chemistry
Determine whether each cation is acidic or pH neutral. For those cations that are acidic, write an equation that shows how the cation acts as an acid. A) Sr+2 B) Mn+3 C) C5H5NH+ D) Li+
February 27, 2012 by L.Bianchessi

Chemistry
Determine whether each cation is acidic or pH neutral. For those cations that are acidic, write an equation that shows how the cation acts as an acid. A) Sr+2 B) Mn+3 C) C5H5NH+ D) Li+
February 27, 2012 by L.Bianchessi

Chemistry
Determine whether each cation is acidic or pH neutral. For those cations that are acidic, write an equation that shows how the cation acts as an acid. A) Sr+2 B) Mn+3 C) C5H5NH+ D) Li+
February 27, 2012 by L.Bianchessi

chemistry please help me please!!!
When one student did this experiment, he started with 19.5 mL of 0.118 M monoprotic acid. The endpoint was reached when 17 mL of base was added. What was the concentration of the base?
July 9, 2012 by Sabrina

MSJH
When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have reacted?
May 10, 2013 by MS

chemistry
When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are produced if 56 grams of P4 have react
May 10, 2013 by ms

Chemistry
If 0.5000grams of barium carbonate was reacted with 25.0mLs of 0.15M nitric acid and the gas then collected in 100mL flask at 77C, what is the gas pressure in the flask?
July 2, 2013 by Jessica

Chemistry
Select everything on the list below that is composed of atoms. a. water b. can of soda pop c. computer you are using d. your textbook e. an orange f. bottle of drain cleaner g. flask of hydrochloric acid would the answer be all of the above?
February 2, 2011 by Gabe

Chemistry
Not sure of my answers, pls help me out. I have to indicate the kinds of intermolecular forces that occur between the solute and the solvent in which the molecule is most soluble. a) glucose b) naphthalene c) dimethyl ether d) alanine (an amino acid)
September 9, 2011 by tina

Biochemistry
What type of interaction would most likely form in a tertiary structure of a protein? Lysine Tyrosine Asparagine Leucine Glutamic Acid Threonine Isoleucine Methionine I don't understand this at all. Much help is greatly appreciated.
September 14, 2011 by Tommy

Chemistry
Estimate the standard heat of formation of one of the basic buildin block of life, the amine acid glycine. (a) NH3 (b) H2O (C) H2O2 D(NN)=944; D(H-H)=436; D(OO)=498; D(O-O)= 142; D(N-N)=391; D(O-H)=464
March 14, 2012 by VybzMachine

Chem- Ideal Gas Law
Carbon dioxide can be made in the lab by the reaction of hydrochloric acid with calcium carbonate. How many milliliters of dry CO2 at 20.0 C and 745 torr can be prepared from a mixture of 30.6 g of CaCO3 and 279 mL of 0.250 M HCl?
April 2, 2014 by Anonymous

Chem
Compound A is a clear colorless liquid with a familiar, pleasant odor, which boils at 91-92C. A dissolves readily in water. When a solution of 5 drops of A in 1 mL of water is tested with blue and red litmus, neither test paper is seen to change color. The addition of a few ...
June 12, 2006 by Jay

Chemistry
Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated? pls help me I stayed up all last night trying to get this one question :(
November 18, 2012 by Kevin pls it's due at midnight :(

Chemistry
5.0x101 mg of NaCl is added to 0.100 L of a 1.4x10-2 M solution of Pb(NO3)2. Calculate the resulting equilibrium concentration of Pb2+ after mixing. Show all work.
March 4, 2015 by Ana

Chemistry
Hemoglobin (Hb) in the blood absorbs oxygen to form oxyhemoglobin [Hb(O2)2], which transports oxygen to the cells. The equilibrium can be generally represented by the following (though it is actually composed of a series of equilibria in which Hb binds from between 1 and 4 O2 ...
April 1, 2012 by Laffy Taffy

math
When using a 1% cream and a 6% cream to produce a 4% cream, how many parts of each initial ingredient will be needed?
August 5, 2012 by Karen

chemistry
When using a 1% cream and a 6% cream to produce a 4% cream, how many parts of each initial ingredient will be needed?
July 21, 2014 by Kill

CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L of solution d) one ...
March 13, 2011 by Jon

CHEMISTRY
Which of the following solutions contain the greatest total ion concentration? a) one mole of potassium chloride dissolved in 1.0L of solution b)one mole of sodium phosphate dissolved in 1.0L of solution c)one mole of ammonium carbonate dissolved in 1.0L of solution d) one ...
March 13, 2011 by Jon

AP CHEMISTRY
At 80.C, Kc = 1.87 10-3 for the reaction. PH3BCl3(s) PH3(g) + BCl3(g) (a) Calculate the equilibrium concentrations of PH3 and BCl3 if a solid sample of PH3BCl3 is placed in a closed vessel at 80.C and decomposes until equilibrium is reached. (b) If the flask has a volume of ...
February 6, 2012 by Stan3000

science
Explain the concepts of phyletic gradualism and punctuated equilibrium. What predictions about the fossil record does punctuated equilibrium make? In this model, what are the processes that produce rapid evolution? Which evolutionary factors are responsible for the periods of ...
May 11, 2012 by kamelia

Chemistry Help Please!!
How can you precipitate BaCrO4(s) from a solution of barium nitrate and potassium dichromate? I don't get it.. it's a question from a lab we did on chromate-dichromate equilibrium.
March 5, 2012 by Chem Student

CHEMISTRY
A buffer that is 0.271 M in acid, HA, and 0.150 M in the potassium salt of its conjugate base, KA, has a pH of 2.85. What is the pH of the buffer after 130. mL of 0.155 M LiOH is added to 0.650 L of this buffer? Assume that the volumes are additive.
September 21, 2011 by Rachel

CHEMISTRY
A buffer that is 0.271 M in acid, HA, and 0.150 M in the potassium salt of its conjugate base, KA, has a pH of 2.85. What is the pH of the buffer after 130. mL of 0.155 M LiOH is added to 0.650 L of this buffer? Assume that the volumes are additive.
September 21, 2011 by Rachel

biochemistry
why does the hydrolysis of peptide bonds work best in the conditions: (Acid) M HCL @ 110-120 C 12-48 hours. Than the conditions: (Base) 2-6 M Naoh @ 100 C ~24 hours?
September 13, 2007 by Krystal

chemisty
is this correct?: word equation: nitric acid+potassium hydroxide= potassium nitrate balanced symbol equation: 3HNO3+2KOH=2KNO3+H2O
June 7, 2009 by andra

chem101
if 23.74ml of 0.01470M NaOH are required to completely neutralize 25.00ml of gastric juice,calculate the concentration of the hydrochloric acid[in g/L]in stomach gastric juice
April 11, 2010 by kabelo

Chemistry
CuSO4(aq) + 4NH3(aq) → [Cu(NH3)4]SO4(aq) I know that adding nitric acid will reverse the reaction. But what is the actual chemical equation? [Cu(NH3)4]SO4(aq) + HNO3(aq) --> ???
June 10, 2010 by elin

Chemistry
Write the word equations below as chemical equations and balance. copper + sulfuric acid yield copper(II) sulfate+ water + sulfur dioxide
December 1, 2010 by Pedro

chemistry
400 cm3 of 0.5mol/dm3 hydrochloric acid was reacted with 5g of magnesium oxide. Calculate the mass of reacted oxide? Show the steps and thq..
February 17, 2011 by vigor

CHEM-102
Ka for hypochlorous acid,HClO is 3.0x10^-8. Calculate the pH after 10.0, 20.0, 30.0, and 40.0mL of 0.100M NaOH have been added to 40.0mL of 0.100M HOCl.
March 27, 2011 by Christian

chemistry
1) to the nearest gram, what is the molar mass of Al2O3? 2)Br+H3O->HBr+H2O when this reaction is reversed what substance acts as an acid? what substance acts as a base ?
August 22, 2011 by lolo

Chemistry
Aqueous potassium sulfate can be prepared by titrating dilute sulfuric acid against aqueous potassium carbonate. What conclusion can e drawn from here? And explain why is it so.
September 7, 2011 by StuartKess

science(chemistry)
why sodium carbonate against hydrochloric acid titration using phenolphthalein indicator does not go to completion but stops at the sodium hydrogen carbonate stage.
November 21, 2011 by yussif

Physical Science
How do you write the chemical equation for neutralization of nitric acid, HNO3, with magnesium hydroxide, Mg (OH)2, first with spectator ions and then without spectator ions?
February 20, 2012 by Holly

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