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May 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: 62,367

chemistry
is C8H7O2COONa an acidic salt or basic salt? basic because the C8H7O2 is a weak acid, and Na is part of a strong base.
June 13, 2007 by katie

science
If u use 4 g of calcium carbonate in excess acid,instead of 2 g.They find that the rate of the reaction increases.why the rate increases?
July 13, 2011 by Nonhlanganiso

chemistry
how many grams of iron (iii) nitrate are needed to produce 25.0 g of iron (iii) sulfate form sulfuric acid?
May 6, 2013 by jinie

chemistry
Determine the mass of copper(ii)trioxonitrate(v) that will be formed,when 15g of copper is added to excess diluted trioxonitrate(v) acid. (cu=63.5, N=14, O=16)
November 21, 2013 by Anonymous

chemistry
A 25.0-mL sample of H2SO4 is neutralized with NaOH. What is the concentration of the H2SO4 if 35.0 mL of 0.150 M NaOH are required to completely neutralize the acid?
March 2, 2014 by tiya

chemistry
A carbonate ion, CO32−, can participate in an acid-base reaction. How should the carbonate ion be classified?
October 13, 2014 by Morgan

chemistry
Which of the following is not true in a dynamic equillibrium describing a saturated solution? Choose one answer. a. solid crystalizes from solution b. solid dissolves in the solution c. concentration of dissolved solute remain constant d. rate of dissolving is double the rate ...
February 10, 2010 by CC

MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. (a) 3y = x – 10 y = x – 2 (b)x + y = 5 3x + 3y = 15
March 9, 2010 by Rebecca

MATH214
Solve each of the following systems, if possible. Indicate whether the system has a unique solution, infinitely many solutions or no solution. x- 2y=3 4y- 2x=0
March 9, 2010 by Rebecca

Math: Please check answer
3. Which of the following is a solution of x² + 14x + 112 = 0? If necessary, round to the nearest hundredth. A.) x = –0.24 B.) x = –4.24 C.) 4.24 *D.) no solution Thank you
February 28, 2013 by cassie

Life Science
Please verify that the type of transport that supplies a cell with glucose is active transport, or is it another type of transport? I know that Binary Fission and Mitosis are similar becuse they produce new cells, how are they different? If Cytokinesis occured without mitosis ...
November 5, 2006 by Maria

Chemistry
All acid-base indicators change color in the same pH range. All? What is your thinking on this? Surely you do now want us to do your thinking for you
February 14, 2007 by KHNJ

chemistry please help
how do you know if a hydrolytic work up is required for reactions with grignard reagents? What does hydrolytic work up mean is it treatment with aqueous acid
November 2, 2009 by molly

chemistry
Ka for hypochlorous acid, HClO, is 3.0*10^(-8). Calculate the pH after 10.0, 20.0, 30.0, and 40.0 mL of 0.100M NaOH have been added to 40.00mL of 0.100M HClO.
March 10, 2011 by a

Chemistry
A student reacts 20.0 grams of sodium hydroxide with hydrochloric acid and obtains 25.0 grams of sodium chloride. What is the percent yield?
April 3, 2011 by Lisa

Biology
Amino acid is to protein as A. fat is to lipid B. DNA is to RNA C. sugar is to fat D. simple sugar is to cellulose I think it is A..?
August 28, 2013 by Cassie

chem
How many grams of the adipic acid (C6H10O4) could form from the reaction of 15.00 g of cyclohexane (C6H12) with the 25.00 g of oxygen? Will the formula be... 2O2 + C6H12 ---> C6H10O4
November 4, 2014 by michelle

chemistry
What are the effects on chemical equilibrium of following; Temperature , Concentration and Pressure.
May 28, 2011 by sam

chemistry
calculate the value of the equilibrium constant K for this reaction A+B <--> C from the following information 3C <--> D Kc= 7.1*10^-4 D <--> 3A + 3B Kc= 2.9*10^-2
November 3, 2012 by Brun

chem
Determine the equilibrium constant for the following reaction. 2 Fe3+(aq) + H2(g) 2 Fe2+(aq) + 2 H+(aq)
June 21, 2013 by amelia

chemistry
the thing that is troubling me is that NO2 is not (NO2)- does that change it from being considered a lewis base to a lewis acid?
February 12, 2009 by Anonymous

Chemistry
A compound which can donate 2 protons is termed dibasic acid. What is the name given to a compound which can accept 2 protons?
February 23, 2013 by John

Chemistry
A 30.0-ml sample of 0.165 M propanoic acid is titrated with 0.300 M KOH. What is the pH at 5 ml of added base, at 10 ml of added base?
March 19, 2013 by Annie

chemistry
is 3M less or more concentrated than 9M of sulfuric acid? I think that 9M is more concentrated but I wanted to make sure. thanks
April 8, 2014 by jazz

social studies 8thssss
What was the impact of the New Deal programs on Georgians? (Choose all that apply.) (3 points) Electricity was brought to rural areas.*** Relief was brought to citizens through the state or local governments.*** Elderly and unemployed workers were provided assistance.*** A 40-...
May 11, 2015 by XenaGonzalez

Chem
a 0.2000 grams sample of aluminum metal is added to a solution containing 1.0000grams of an unknown compound made of platinum and chloride ion. the reaction results in the formation of aluminum chloride and platinum metal. when the reaction is complete, unreacted aluminum ...
March 1, 2014 by Carley

chem
PCL5=PCl3+Cl2 a. Initially 0.72 mole PCl5 are placed in 1.50 L flask. At equilibrium, there is 0.16 mole PCl3 in the flask. What is the equilibrium concentration of the PCl5? b. What is the equilibrium concentration of the Cl2? c.What is the equilibrium constant for the ...
November 19, 2012 by chemdummy79

chemistry
What is the mole ratio between all compounds of this reaction:HC2H3O2 + NaHCO3 = NaC2H3O2 + H2O + CO2
March 3, 2013 by Jeanne

chemistry
At 20. °C, the vapor pressure of toluene is 22 millimeters of mercury and that of benzene is 75 millimeters of mercury. An ideal solution, equimolar in toluene and benzene, is prepared. At 20. °C, what is the mole fraction of benzene in the vapor in equilibrium with this ...
February 2, 2009 by Unsure

Chemistry
PLEASE fully explain these...I've already tried to figure them out and failed terribly... thanks so much 4. 5.6 x 10-6 mol of A and 5 x 10-5 mol of B are mixed in a 200 mL flask. The system is represented by the equation: At equilibrium, there is 4.8 x 10-5 mol of B. Calculate...
May 17, 2012 by Katie

chemistry lab
An enzyme-catalyzed reaction is carried out in a 50-mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at the start of the ...
February 2, 2008 by alan

chemistry
Problem: Need to prepare a 250 mL buffer of pH 7.00 using equimolar K2HPO4 and KH2PO4 solutions. Ka for phosphoric acid: Ka1=7.2 x 10^-3 Ka2=6.3 x 10^-8 Ka3=4.2 x 10^-13 I though the hard part of this was picking the right equation/Ka value, but I am not getting the right ...
February 22, 2015 by lauraK

Chemistry Lab
So we prepared 100mL of .1M solutions of these solutions, and found the pH and H+ contents: pH H+ HCl: .57 .270 HNO3: .58 .260 H2SO4: 1.29 .051 HC2H3O2: 2.44 .0036 H2C2O4: .84 .145 HKC6H4(CO2)2: 4.13 7.41 Now I'm stuck on this question. What conclusions can be drawn from this ...
March 21, 2011 by Adrianna

calculus
solve the following inequality 15x-16 less than or equal to 15/x is the point x=0 included in the solution set of the inquality? are the other finite pointsa of the interval included in the solution set? what is the solution set? please show work
December 27, 2012 by Heather

chemistry
Which factors below affect the rate of a chemical reaction? -Collision frequency -Number of collisions having the least activation energy -Intermolecular orientation -Being Exothermic or Endothermic Also, what formula would I use for this problem: "What is the hydroxide ion ...
April 29, 2007 by anonymous

equilibrium
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.510. If a trial's absorbance is measured to be 0.250 and its initial concentration of SCN– was 0.00050 M, the equilibrium concentration of SCN...
April 4, 2007 by Christine

Calculus
Suppose that a population develops according to the logistic equation dP/dt = 0.06P−0.0001P^2 where t is measured in weeks. 1) The carrying capacity is . 2) The growth rate k is . Use your calculator to sketch a direction field for this equation. Sketch the solutions ...
November 17, 2013 by Sarah

Chemistry quistion help!
I need help answer this question for a chemistry homework. What are the products in a reaction between an acid and a base? How can you tell that a reaction has occurred?
April 2, 2008 by Lisa

Chemistry
Can someone tell me when I add charges to my balancing equations? I know that you add charges when dealing ionic compounds (metal and nonmental), but what else? Acid?
February 4, 2009 by Chopsticks

anatomy
4. What provides the shortest-term mechanism for preventing acid-base imbalances in the body? The longest-term mechanism? Describe each in detail.
May 10, 2010 by monica

College Chemistry
The Cu2+ ions in this experiment are produced by the reaction of 1.0 g copper turnings with excess nitric acid. How many moles of Cu2+ are produced?
October 7, 2010 by Maggie

chemistry
If you wanted to hydrolyze 1 mole of PLA into 1 mole of sodium lactic acid, how many moles of sodium hydroxide would you need?
February 22, 2011 by meg

chemistry
write the equation of the neutralization of sulfuric acid (H2SO4) with potassium hydroxide (KOH) and write the net ionic equation for the reaction
October 25, 2011 by Doss

medicinal chemistry
the solubility product of PbSO4 at 298K is 1.6x10^-8 mol^2dm^-6. Calculate the solubility of PbSO4 in 0.10mol dm^-3 sulphuric acid.Thanks!
May 28, 2012 by jane

Chemistry
Which salts cannot be prepared by an acid-alkali titration method? And why? A. Sodium sulfate B. Ammonium sulfate C. Potassium nitrate D. Iron(II) nitrate
October 19, 2012 by HandsomeLala

chemistry
A gas with the smell of rotten eggs is evolved with dilute sulphuric acid is added to a simple of salt.the gas evolved could turn?
March 7, 2013 by nanayeboahford

AP Chemistry
In neutralization reactions, acid + base -> salt + water HCL can be neutralized with NaOH. How many moles of NaOH will it take to neutralize 0.56 L of 0.51 M HCl?
March 3, 2014 by Anonymous

Chem 130
How many grams of the adipic acid (C6H10O4) could form from the reaction of 15.00 g of cyclohexane (C6H12) with the 25.00 g of oxygen? Will the formula be... 2O2 + C6H12 ---> C6H10O4
November 3, 2014 by michelle

chemistry-chemical equations
How do I write the balanced chemical equation for Copper +nitric acid -> copper(II)nitrate+ nitrogen dioxide + water
November 30, 2014 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

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 Please Help. DR. BOBB
Standardization of the Sodium Thiosulfate Solution Make up a standard solution of potassium iodate by accurately “weighing by difference” about 0.1 g of KIO3 and placing it in your 100 mL volumetric flask. Fill the flask to mark with distilled water. Potassium iodate reacts ...
October 19, 2008 by Sara

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 22.1ºC 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

SI Chemistry
hydrogen chloride gas reacts with oxygen gas to yield chlorine gas and water vapor in an equilibrium reaction. an experiment was performed in a closed vessel starting with a mixture of 0.50 M HCl and 0.050 M O2. the amount of chlorine was monitored until no change was observed...
November 30, 2011 by Cody

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

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
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
If 0.2g of iodine is stirred in 100cm3 of water at 298k till equilibrium is reached what will be the mass of iodine found in solution
May 26, 2015 by saquib

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

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

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

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

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

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

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

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

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