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February 13, 2016

# Search: Calculate the pH of 0.10 M aqueous solution of each of the hydrochloric and acetic acids: Complete the following table.

Number of results: 84,457

chemistry
which of the following was not one of the products when you titrated the vinegar solution with sodium hydroxide? HC2H3O2+NaOH===>NaC2H3O2+H2O a salt water sodium acetate acetic hydroxide
July 13, 2010 by Anonymous

chemistry
calculate the pH of a buffer solution containing 0.200M acetic acid, HC2H3O2, plus 0.150M sodium acetate. The dissociation constant for HC2H3O2 is 1.76 x 10-5 I dont think our instructor gave enough notes on these things Im kind of winging it from the book. Could you please ...
November 11, 2011 by Monique

chem
As little as 1.oomg of Arsenic in 1-L of water can kill you. Calculate the following. Assume the density of the solution is 1.00g/cc. a.) How many moles of arsenic in 1 mg? b.) What is the mass percent of the solution? c.) What is the concentration in ppm and ppb? d.) What is ...
December 8, 2012 by Tricia

Chemistry
A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the HCl solution: a) 0.00 mL b) 10.0 mL c) 20.0 mL c) 30.0 mL d) 40.0 mL **I know how to solve the problem but I keep getting answers that are exactly ...
March 21, 2015 by Sandhya

Managerial Economics
The following relations describe the supply and demand for posters. Qd = 65,000 – 10,000 P Qs = -35,000 + 15,000P Where Q is the quantity and P is the price of a poster, in dollars. a. Complete the following table. Price Qs Qd Surplus or Shortage $6.00 5.00 4.00 3.00 2.00 1.00... October 8, 2007 by Eric Chemistry Find the pH: 1) A 0.001M solution of HCl 2) A 7.98 x 10^-2 M solution of HNO3 3) 1098L of a solution containing 8.543moles of HBr 4) 120mL of a solution containing 0.005 grams of hydrochloric acid. Please help me with these four. Out of 20 questions i only didn't understand ... March 20, 2013 by Katelyn Chemistry assuming the vinegar solution has a density of 1.01 g/mL, calculate the percent by weight of actic acid (CH3CO2H) in your sample of vinegar. How does the value compare with 5% the value for the % acetic acid in normal vinegar? Thanks! March 7, 2012 by Wandy Bio-Chemistry These are my answers but i want to know if i have the correct ones. There is only one best answer. A. 2,2-dimethyl butane B. Cyclohexane C. cis-2-pentene D. table salt E. acetylene Axial/ equitorial hydrogents- B triple bond- C quaternary carbon- E 10 hydrogens- A A. esters B... February 1, 2012 by Ryan Chemistry The pH of a .200M HBrO solution is 4.67. What is the acids Ka? May 9, 2014 by Shayla chemistry 5oocm3 of 1.0 mol dm3 of sodium hydroxide solution at room temperature was placed in a styrofoam cup and 25cm3 of 2.0 mol-dm3 of hydrochloric acid was added at the same temperature.The temperature rose by 15.2 degrees celsius. Calculate the heat of neurtralization March 8, 2015 by marie haynes Chemistry A solution is prepared by mixing 13.00 ml of .0021 M aqueous Hg2(NO3)2 with 25 ml of .015M HCL. Assme that volumes are additive. a) Will precipitation occur? b) Calculate [HG2 2+], [CL-], and [NO3] after equilibrium is established. April 8, 2010 by Anmol Chemistry A volume of 25.0 mL of 8.0 M acetic acid is diluted with sufficient water to prepare 1.00 liter of solution. What is the concentration of the diluted solution? March 9, 2008 by Allie chemistry What are the concentrations of all the solute species in a 1.2 M solution of acetic acid, HC2H3O2? (a) [H3O+], M; (b) [OH-], M; (c) [CH3COOH], M; (d) What is the pH of the solution? For CH3COOH, Ka = 1.8 x 10-5 August 20, 2010 by Lozz chemistry laboratory 1. prepare a buffer solution by using acetic acid and sodium acetate.2. prepare M/40 NAOH solution. May 31, 2012 by suchismita mandal Chemistry If acetic acid is the only acid that vinegar contains , calculate the concentration of acetic acid in the vinegar. if the pH of vinegar is 2.7 February 26, 2012 by Taylor Math complete the function table below for the function F(x) =x2=2 . the numbers in the second row of the completed table make an arithmetic sequence ?. January 3, 2012 by Love chem When saccharin is added to pure water, the freezing point of the resulting solution drops to -5.0C, Calculate the freezing point depression of the aqueous saccharin solution. Note: freezing point of pure water is O.0C... Stuck thanks so much! January 16, 2013 by Lala Chemistry What is the concentration of an acetic acid solution if 11.2 mL of 1.002 Molarity sodium hydroxide solution is needed to completely neutralize 5.1 mL of the acid? March 23, 2011 by Bruce Chemistry If you take 3 mLs of a solution that is 4M acetic acid and add enough water to it to make 50 mLs, what is the molarity of the final solution? Thank you! March 20, 2015 by Artemis Chemistry URGENT/DR BOB Can someone may sure that I balanced the following groups of equations correctly. Write an equation to show how acetic acid reacts with water to produce ions in solution. C2H4O2 + H2O >>>>>>> H3O + C2H3O Write an equation for the neutralization of HCl and ... April 23, 2014 by jazz chemistry 100 mL of a 0.1 mM buffer solution made from acetic acid and sodium acetate with pH 5.0 is diluted to 1 L. What is the pH of the diluted solution? October 10, 2014 by Ash chemistry If 2.29 mL of a stock solution of acetic acid with a concentration of 0.723 M is mixed with 15.75 mL of water, what is the concentration of the diluted solution? May 5, 2015 by mel chemistry The freezing point of a 0.010 m aqueous solution of a nonvolatile solute is ?0.072°C. What would you expect the normal boiling point of this same solution to be? have no clue, thanks for the thelp Freezing point depression= N*kf* molality you have freezing point depression, ... December 5, 2006 by tyler AP Chem Hey guys! Stuck on some pH problems! Thanks so much in advanced: A) Calculate the pH of a 0.200 M solution of potassium acetate, KCH3CO2, in water at 25 °C. At this temperature, Ka = 1.76 × 10-5 for acetic acid. 1. 2.73 2. 5.45 3. 9.02 4. 9.94 5. 10.16 6. none of these Maybe ... October 10, 2015 by Allie HELPP !! Copper(I) ions in aqueous solution react with NH3 according to Cu^+ + 2NH3 --> Cu(NH3)2^+ Kf=6.3x10^10 Calculate the solubility (in g/L) of CuBr (Ksp=6.3x10^-9) in 0.81 M NH3. May 10, 2012 by HELPP ! Chemistry A beaker with 200 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 6.40 mL of a 0.400 \it M \rm HCl solution to the beaker. How much will the pH change? The pKa of ... March 29, 2011 by Bobby chemistry The skeletal structures of the two amino acids, glycine and lysine, are given below along with the values of the relevant acid dissociation constants (pKa). (b) Calculate the pI (isoelectric point) of the dipeptide, Lys-Gly, assuming that there is negligible shift in the ... May 31, 2013 by bonjo chemistry Hi DrBob222, this is regarding my Determining Ka of Acetic acid lab I talked about on April 5, 2008. Refer to the volume of NaOH on your graph from question 2. Calculate half this volume and on your graph, find the pH when the solution was half neutralized. did you get a pH in... April 6, 2008 by Sarah 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 chemistry Concentrated hydrochloric acid is a 38% solution of hcl in water and has a density of 1.18g/ml. How many milliliters of concentrated hydrochloric acid are needed to prepare 500ml of a 1:200 hcl solution. My own three calculation 1.18g/ml x 1000ml x0.38 / 36.46 = 12.3M 500ml x ... September 20, 2012 by Fai science A laboratory assistant prepared 1 liter of a 40% aqueous sodium Hydroxide solution. how many grams of NaOH were needed to make this solution? April 11, 2011 by lola Chem H2SO4 +NaCO3 > Na2SO4 +Co2 +H2O if 150.0 g Of Sulfuric acids is spilled what is the minimum number of moles of sodium carbonate to complete this reaction? March 26, 2011 by Jenna math complete the table given values of x. then use the table to solve the given equation numerically. x-5=-4 x -1 0 1 2 3 x-5 -6 September 14, 2013 by Synde chemistry You want to prepare 500 ml of 1.0M acetic acid from a 17.4 M stock solution.What volume of stock solution is required? November 28, 2015 by omar Biology Can you please help me with this question? Which word is the most appropriate to use in the blank? Normal growth is dependent upon the quantity and quality of proteins eaten. The quality of protein--whether it is complete or incomplete --is dependent upon its content of ... April 20, 2007 by Francine math 1. Consider the following equation. xy + 7x + 5y = –8 (a) Differentiate both sides with respect to x to complete the following. ( blank )y ' + y + blank =0 (b)Solve for y ' in terms of x and y. (c) Calculate dy/dx at the point (4,-4). Can anyone help me on this questions I'm ... June 21, 2010 by Diana Chemistry Give the molecular, complete ionic, and net ionic equations for the reaction of ammonia with hydrochloric acid. March 23, 2011 by Bruce Physics A chain rests on a table, and is released. 1/4th sits on the table, while the remaining 4/5ths of the length hangs before it is released. Calculate the time it takes to leave the table. November 12, 2012 by Maribel chemistry The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH-(aq)? Mn(OH)2(s) + MnO4-(aq) = MnO42-(aq). - after doing the question i got 1..but i dont know if im right :S 1. 3 2. 5 3. 1... November 7, 2009 by John chem101 Which of the following solutes in aqueous solution would be expected to exhibit the LARGEST freezing-point lowering (assuming ideal behavior)? A. 0.1 m NaCl B. 0.2 m CH3COOH C. 0.1 m MgCl2 D. 0.05 m Al2(SO4)3 E. 0.25 m NH3 June 20, 2010 by joan chemistry 340. mL of hydrochloric acid (HCl) acid is exactly neutralized with 500. mL 0.700 M NaOH solution. What is the concentration of the acid solution? June 1, 2014 by Anonymous Chemistry A mixture of chromium and zinc weighing .362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted 225 mL of dry hydrogen gas was collected at 27 C and 750 torr. Determine the mass percent Zn in the metal sample. [Zinc reacts with ... March 4, 2007 by Kyle Chemistry The smaller molecules that make up complex carbohydrates are called A. sugars B. amino acids C. fatty acids D. nucleotides May 10, 2011 by John chemistry Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4. hydrogen gas is bubbled... March 27, 2011 by Jessica Chemistry!! Calculate the pH of 10.00 mL of 0.40 mol/L of hydrochloric acid. November 26, 2011 by L chemistry You want to make an acetic acid/acetate buffer, pH 3.8, with a volume of 250 mL, and a final concentration of ([AcOH] + [AcO-]) = 0.1 M. You may only use acetic acid and sodium acetate (no strong acid or base). How many mL of glacial acetic acid would be needed (d = 1.05 g/mL)? March 7, 2009 by Anonymous Chemistry aqueous sulfurous acid H2SO3 was made by dissolving 0.200 L of sulfur dioxide gas at 19 C and 745 mm Hg in water to yield 500.0 ml of solution. the acid solution required 12.9 ml of sodium hydroxide solution to reach the titration end point. what was the molarity of the sodium... February 20, 2011 by Sierra Chemistry When a clear aqueous solution of calcium chloride (CaCl2) is mixed with a clear aqueous solution of sodium carbonate (Na2CO3), a white solid precipitate forms. What happens to the mass of the mixture after the solid precipitate forms? Choose the best answer. Mass decreases ... September 25, 2012 by Lily Chem I Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution. Also calculate the pH and pOH of the solution. November 15, 2010 by Natalea Chem- Bronsted bases Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.) H2O NH3 H2 CH3NH2 O2 PH41+ CO32- February 23, 2014 by Elizabeth Chemistry An aqueous solution of NaCl is 270m. If the density of the solution is 1.20g/ml. Find a) % NaCl by mass b) Molarity of NaCl in the solution. July 16, 2014 by Arwida Chemistry If acetic acid is the only acid that vinegar contains [Ka = 1.8*10-5] , calculate the concentration of acetic acid in the vinegar. pH of vinegar is 3.20 _______________ First I got the antilog of the pH given, which turned out to be 6.309E-4. Then I did [(6.309E-4)^(2)]/(1.8E-... March 1, 2013 by Jonah AP CHEMISTRY Calculate [OH-] and pH for the following strong base solution; a solution formed by mixing 10.0 mL of 0.011 M Ba(OH)2 with 28.0 mL of 7.4 10-3 M NaOH working and answer would be appreciated February 18, 2012 by MARY chem A 0.158 g sample of magnesium metal reacts completely with 100.0 mL of 1.0 M hydrochloric acid in a coffee cup calorimeter. The temperature of the solution rose from 25.6°C to 32.8°C. What is ∆Hrxn? Assume the specific heat of the solution is 4.184 J/mol-K and the ... June 25, 2015 by peter chemistry write a balanced equation for the reaction that occurs when an aquesous solution of iron(II) chloride is mixed with an aqueous solution of potassium hydroxide March 24, 2008 by natash chemistry You are asked to prepare 150.0 mL of 3.15×10−2 M AgNO3. 2.) An aqueous solution is 6.40% methanol CH3OH by mass, with d = 0.988 g/mL} What is the molarity of CH3OHOH} in this solution? February 16, 2010 by Andrew Chemistry An aqueous solution of an unknown compound boils at 101.00 degrees Celsius (760 torr). What is the molality, and freezing point of this solution? April 21, 2011 by John Chemistry Express the concentration of a 0.0860 M aqueous solution of fluoride, F–, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL. February 21, 2012 by Heather Chemistry Express the concentration of a 0.0900 M aqueous solution of fluoride, F–, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL. July 6, 2014 by Tsomo chm An aqueous solution that is 10.0 percent sulfuric acid (H2SO4) by mass has a density of 1.143 g/mL. Determine the molality of the solution. ( 3 significant figures) February 3, 2015 by tyler chm An aqueous solution that is 10.0 percent sulfuric acid (H2SO4) by mass has a density of 1.143 g/mL. Determine the molality of the solution. ( 3 significant figures) February 3, 2015 by vikki Chem Express the concentration of a 0.0700 M aqueous solution of fluoride, F-, in mass percentage and in part per million. Assume the density of the solution is 1.00 g/mL. September 4, 2015 by Adam GN National Public School If one third of 100 gm of 27% of aqueous solution is taken in a beaker and 10 gm of sugar is added to it,the concentration of resulting solution is..... October 24, 2015 by saumya chemistry-science A 500 ml buffer solution contains .2M Acetic acid and .3M sodium acetate. Find the pH of the buffer solution after adding 20 ml of 1M NaOH, what is the pH? (pka = 4.74) April 30, 2010 by jess physics, please help check A rocket car is traveling on a linear horizontal frictionless track when it suddenly runs out of fuel. The car has achieved a speed of 100 meters per second at the very moment the fuel is completely spent. The track then suddenly changes to a 30-degree incline from the ... February 21, 2007 by Katrina MacroEconomics Assuming that the following table describes a typical consumer’s complete budget, compute the item weights for each product. Item: Quantity: Unit price: Coffee 20 pounds$5 Tuition 1 year $4,000 Pizza 100 pizzas$8 DVD rental 75 days $5 Vacation 2 weeks$450 Q6 Suppose the ...
February 17, 2011 by Ojie

chemsitry
the ph of a .030M C2H5 COOH solution is 3.20. What is this acids Ka?
May 12, 2012 by ryan

chemistry
What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
June 16, 2013 by dennis

chemistry
What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
June 16, 2013 by Dennis

Chemistry
What is the pH of a buffer solution that is made by adding 21.0 grams of sodium fluoride to 1.00 Liter of 0.15M hydrofluoric acid? (see the Table above for the Ka of hydrofluoric acid; calculate the pH to 2 decimal places) hint: you will have to find the molarity of NaF in ...
June 17, 2013 by D.J.

chemistry 101
If 15g of NaOh is dissolved in 285 g of water, calculate the following. Assume the density of the solution is 1.06 g/cc. a) Calculate the moles of NaOH in the solution? My answer is 15gNaOH/40g NaOH= .0375 mole NaOH b) Waht is the mass % w/w of the solution? My answer is 15g ...
December 8, 2012 by Tracy

Chemistry
3) The chemical formula for ethylene glycol (antifreeze) is C2H6O2 and Isopropyle alcohol is C3H7OH. Calculate the new boining and freezing oints for 1000.0 g of aqueous solution (total volume), that is 30.0% solute (the antifreeze and the alcohol are the solutes). You will ...

biology
compare and contrast the variety of amino acids with that of monosaccharides and fatty acids. Which group exhibits the greatest structural variability?
February 11, 2010 by paul

chem
the following experiment was performed in the laboratory : an excess of solid SrCrO4 is vigorously shaken in water until a saturated solution is obtained. The excess solid is filtrated from the solution and 25.00 ml of the solution is titrated with 0.0115 M fe(no3)2 solution. ...
November 17, 2015 by jack

compemtary math
. To determine the compound amount of an investment of \$10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment. Now, using the new ...
October 3, 2013 by mary

The freezing point of an aqueous solution that contains a non-electrolyte is -9.0 degrees celcious. A. What is the freezing-point depression of the solution? B. What is the molal concentration of the solution?
April 27, 2010 by Taylor

intro to chem
The molarity of an aqueous solution of potassium hydroxide, KOH, is determined by titration against a 0.197 M HI solution. If 28.4 mL of the base are required to neutralize 18.6 mL of HI, what is the molarity of the KOH solution?
August 13, 2013 by Meseret

To TOM
I accidentally erased your post on the hydrolysis of various anions. The answer is Kb(for the anion) = (Kw/Ka for the Ka for the acid) where Ka will be Ka for monoprotic acids, k2 for diprotic acids, or k3 for triprotic acids So to make OH^- the smallest you want Ka to be the ...
April 5, 2014 by DrBob222

Chemistry
You have 250mL of a 0.56M solution of sodium acetate. How many mL of 0.50M acetic acid should be added to make a buffer of pH 4.40? I think this is a buffer system so I would use pH=pka + log base/acid so would I set this up as 4.40 = 4.74 + log base/ 1.8e-5 from acetic acid?
April 10, 2012 by Hannah

math 116
suppose you want to add a sprinkler system, and the location of one section of the sprinkler line can be described by the equation y = - 1/2x - 4 complete the following table: x y (x,y) ? -1 ? -2 ? ? ? -4 ? 2 ? ? 8 ? ? my answers: x y (x,y) -1.5 -1 (-1.5,-1) -2 -3 (-2,-3) 12 -...
October 5, 2008 by Carmen

Algebra 1 (Reiny)
1. It takes Dustin 2 hours to shovel the snow from his driveway and sidewalk. It takes his sister 3 hours to shovel the same area. How long will it take them to shovel the walk if they work together? A: Working together, Dustin and his sister can shovel the walk in 1 1/5 hours...
June 3, 2014 by Victoria

Physics
A force of 20N applied parallel to the surface of a horizontal table,is just sufficient to make a block of mass 4kg move on the table.calculate the coefficient of friction between the block and the table.
February 11, 2012 by Jeremiah

chemistry
A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The density of water at 20.0...
May 24, 2015 by Jason

chemistry
A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The density of water at 20.0...
May 24, 2015 by Jason

algebra
suppose you want to add a sprinkler system, and location of one section of the ssprinker line can be described by the equation y=1/2x-4 complete the table for this equation x y (x,y) -1 -2 -4 2 8 PLEASE HELP ME SOLVE THIS TABLE!!!!!!
October 24, 2008 by pj

I need help! I am supposed to complete the table and write an equation to show the relationship. The table has input of x, 0,1,2,3,4,5 and output of y,4,10,16,22,and the last two outputs are blank. I think they are 28 and 34--but what is the relationship?
December 8, 2010 by brook

chemistry
When making pepsin in acetic acid, can I apply heat to the solution? What is the appearance of the pepsin solution should be? I'm not sure if it has to be really transparent, I know that it looks kinda yellow.
July 1, 2011 by blast

chemistry
When making pepsin in acetic acid, can I apply heat to the solution? What is the appearance of the pepsin solution should be? I'm not sure if it has to be really transparent, I know that it looks kinda yellow.
July 1, 2011 by blast

Chemistry
The following redox equation occurs in acidic aqueous solution. When it is balanced with the smallest whole number coefficients, what is the coefficient for chlorine gas? KMnO4(aq) + KCl(aq) + H2SO4(aq) = MnSO4(aq) + K2SO4(aq) + Cl2(g) a. 1 b. 3 c. 5 d. 8 e. 10
November 3, 2008 by Angelo09

Chemistry
a change in pressure would have the greatest effect on the solubility of a A. solid in a liquid B. gas in a liquid C.liquid in a liquid D.liquid in a solid in an aqueous solution of potassium chloride, the solute is A. Cl B. KCl C. H20 D. K B for the aqueous solution one ...
March 26, 2007 by Kat

Chemistry
which of thh following reactants would you add to an aqueous solution of ammonium sulfate in order to precipitate quantitatively all the sulfate? A. CaCl2 b. Al(NO3)3 c. Zn(C2H3)2)2 d. KBr
April 27, 2012 by Rosebud

chemistry
I am trying to answer a bunch of lab questions about a lab I did and am stuck on finding the morality of the diluted vinegar solution? Can anyone help me? (I hope I gave enough info) Here where the lab procedures that I already went through: Transfer 10mls (Vc)of vinegar to a ...
June 12, 2009 by Gweedo8

AP chemistry
We have an aqueous solution that contains 22% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 173 g/mol. The density of the solution is observed to be 1.4 g/mL. What is the molarity of Z in this solution? Answer in units of mol/L.
October 24, 2010 by Anonymous

chemistry
We have an aqueous solution that contains 47% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 209 g/mol. The density of the solution is observed to be 1.3 g/mL. What is the molarity of Z in this solution? Answer in units of mol/L
September 13, 2012 by cheri

CHEMISTRY
Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than for cocaine? Explain...
April 13, 2014 by Amber

Chemistry
Given that the structures of cocaine (on the right side of the equation) and its free base ( on the left side) with an H+ : a. Would you expect K for the cocaine to be greater or less than 1.0? Explain. b. Would K for the free base be higher or lower than for cocaine? Explain...
April 13, 2014 by Amber

chemistry........help!! =)
One brand of laundry bleach is an aqueous solution containing 4.00% sodium hypochlorite (NaOCl) by mass What is the molarity of this solution? (Assume a density of 1.02 g/mL .)
December 8, 2010 by Lisa, Help needed!

chemistry
What is the molarity (moles per liter) of an aqueous solution that is prepared by dissolving 5.58g NaOH (MW=40) in enough water to make 250mL of solution?
March 28, 2013 by Kishwa

AP Chem
A student performs an experiment to determine the enthalpy of neutralization of hydrochloric acid and sodium hydroxide. The student combines 25 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 C, in an open polystyrene calorimeter. Each ...
March 22, 2011 by Rachel

chemistry
Calculation of )Hf0 for Mg2+(aq.) 1. Assume the heat capacity of the final solution is 3.92 J K-1 g-1. Using the mass of the HCl solution, calculate qcontents from equation (4.6). Calculate qsystem from equation (4.5). 2. Calculate the moles of Mg2+ produced, nrxn. Be sure to ...
March 25, 2011 by Narash