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chem-acid base titrations

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Chemistry
We did a lab for acid-base titrations, and I'm having trouble with my post lab questions because I had trouble with acid-base reactions and titrations in the first place! "Calculate the molar amounts of NaOH used in the reaction with the HCl solution and with the HC2H3O2. I ...

chem-acid-base titrations
Acetic acid (HC2H3O2) is an important component of vinegar. A 10.00mL sample of vinegar is titrated with .5052 M NaOH, and 16.88 mL are required to neutralize the acetic acid that is present. a.write a balanced equation for this neutralization reaction b.what is the molarity ...

chem
Ok so i looked at it and tried to figure out the conj. base and acid. Are these right? 1) S2-(aq) + HCl(aq) <=>Cl1-(aq) + HS1-(aq) This is what I think it is: Acid = HCl Base = S^2- Conjugate acid =HS^1- Conjugate base = Cl^1- 2) H2O2(aq) + PO43-(aq) <=>HPO42-(aq...

chem-acid base titrations
If 20.0mL of .2019M HCI requires 39.63mL of a NaOH solution for complete neutralization, what is the concentration of the NaOH solution? how many significant figures are justified in the answer?

Chemistry
Predict whether the Ph endpoint is =7 >7, or<7 for each of the following acid-base titrations. Justify you predictions a) hydroiodic acid with sodium hydroxide. b)boric acid with sodium hydroxide c) hydrochloric acid with magnesium hydroxide d) hydrochloric acid with ...

chem
Ok so for question I have to state whether the element/compound is an acid, base, conjugate acid or conjugate base. Can u please tell me if i am correct and help me out with the ones i am unsure what the answer is? 1)S^2-(aq)+HCl(aq)<=>Cl^1-(aq)+HS^1-(aq) This is what I ...

chem
Why are titrations using permanganate performed in acid solution?

chem
Why are titrations using permanganate performed in acid solution?

chem
Why are titrations using permanganate performed in acid solution?

College Chemistry
Sodium hydroxide is used extensively in acid-base titrations because it is a strong inexpensive base. A sodium hydroxide solution was standardized by titrating 27 mL of 0.1628 M standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 2.44 mL, and the ...

Biochemistry
Calculate how you would make 0.5L of a 0.5M (500mM) acetate buffer at a pH of 4.7. Available is sodium acetate and glacial acetic acid. pH=4.7 pKa of acetic acid=4.76 Not sure if I did this next part right: 4.7=4.76 + log [base]/[acid] -0.06= log [base]/[acid] 10^-0.06= [base...

acid and base titrations
what is the pH of a solution prepared by adding 0.50 mol KOH to 1.0 L of 0.30 M HNO3?

Chemistry130
Can someone please help me with this? Are these substances acids or bases? 1. Tums- Base, right? 2. Vitamin C- Acid, right? 3. Nail Polish Remover- Base or Acid? 4. Coca Cola Pop- Acid, right? 5. Cream of Tarter- Acid, right? 6. Calamine Lotion- Base or Acid? 7. Lemon Juice- ...

chemistry
What is the general form for the simplest type of acid-base reaction? A. acid + base salt + water B. acid + base base + acid C. acid + base H+ + OH- D. acid + base solid + water

CHEMISTRY
What indicator is better in the following titrations : 1) strong acid/strong base a) methyl red (4.4 - 6.2 ) b) bromophenol blue (6.2 - 7.6 ) 2) strong acid/weak base a) methyl orange (3.1 - 4.4 ) b) bromophenol blue (3.0 - 4.6 ) 3) weak acid/strong a) phenolphthalein (8.0 - ...

chem lab (webwork)
Complete the table below: How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (mL) NaOH HCl NaOH HC2H3O2

Chemistry
When titrating an acid with a base, a dilute solution of the base is used. When titrating a base with an acid, a dilute solution of acid is used. Why are these titrations done with dilute solutions?

chem
In the Bronsted-Lowry theory of acids, an acid will lose a proton (H+) and leave behind the conjugate base of the acid. The conjugate base of a strong acid is?

chem lab (webwork)
How much 0.10 M Base (in mL) is required to neutralize 8.00 mL of the 0.10 M acid? Base Acid Base Volume (mL) NaOH HCl NaOH HC2H3O2

Bio Chem
The pKa of propanoic acid (propionic acid), CH3CH2COOH, is 4.87. Consider an equilibrium mixture of propanoic acid and its conjugate base with a pH of 4.87. Draw the structure of the form (acid or conjugate base) that predominates after a decrease in [H3O ]. Include all ...

Chemistry
How do can you find the difference between these acids/bases with only one indicator? We have 0.1M NaOH, H2SO4, HCl, AlCl3, and Na2CO3. We know the pH of all the solutions (AlCl3 = 2.9, H2SO4 = 0.7, HCl = 1, Na2CO3 = 11.8, NaOH = 13). We only can use 1 indicator to determine ...

chemistry
If the acid base reaction HA(aq)+B^-(aq)---> HB(aq)+A^-(aq) <--- has a k = 10^-4,which of the following statements are true & why? (a)HB is a stronger acid than HA (b)HA is a stronger acid than HB (c)HA & HB have same acidity (d)B^- is a stronger base than A^- (e)A^- is ...

chemistry
Do strong acid strong base titrations have a buffer region?

acid and base titrations
in a titration, 0.0400 mol of solid NaOH is required to neutralize 10.0 mL of H2SO4(aq). From these data, the [H2SO4] is:

Organic chem
Classify each as a lewis acid or lewis base... A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3 Lewis acids are electron pair acceptors. Lewis bases are electron pair donors. Look at H2O, for example. .. H:O: .. H This molecule has no "holes" to accept an electron. Would you expect this to be...

Chemistry
Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: HCO3^- + S^2- <-> HS^- + CO3^2- I got it. HCO3^- is the base in the pair with CO3^2-. S^2- is the acid in the pair with HS^-. Would you believe you have ...

Chemistry
my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to copy says that In the equation HC2H3O2 + H20 <--> C2H3O2(- charge) + H3O(+ charge) HC2H3O2 is an acid H2O is a base C2H3O2(- charge) is the conjugate base and H3O(+ charge...

chemistry please check
for the following reactions label each species as an acid or a base. Indicate the species that are conjugate acids and conjugate bases. A. HSO4-(acid) + NH3(base)<--> SO4^2-(conj base) + NH4+ (conj acid) B. HPO4^2- (conj base)+ NH4+ (conj acid) <--> H2PO4-(acid) + ...

biochemistry
Is CAPS an acid or base? If it is an acid, what is its base? If it is a base, what is its acid? Also, is Tricine an acid or base? If it is an acid, what is its base? If it is a base, what is its acid? Thanks.

Chemisty
In titrations of acids and bases, what is the difference between the end point of the titration, and the equivalance point? Also, what is chemically occuring during the buffer zone? Thanks! Good question and one that students sometimes have trouble with. The equivalence point ...

chem
How do I calculate ratio of volume of base to volume of acid . Ex) phenolphthalein: Acid:20mL Base 30mL

chemistry
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 3.60g of the base. 2HNO_3(aq) + Ca(OH)2(aq) -> 2H_2O(l) + Ca(NO_3)2(aq) H_2SO_4(aq) + 2KOH(aq) -> 2H_2O(l) + K_2SO_4(aq) how do i ...

Chemistry
I don't know how to reply to an answer. First of all thank you! For the question I just asked about the titration curves. Would that mean that titrating with barium hydroxide would take half the volume that is used when titrating with sodium hydroxide? Oh and there was a ...

Chem
write the dissociation of acetic acid identifying the base,acid,H donor, and H receiver C2H4O2+H2O - H3O+C2H3O2 is hydronium the H donor and is C2H3O2 the base?

Acid Base Chem
During the course of an experiment with hydorgen phsophate (HPO42-) you find that it is functioning as a base. When you search for the Kb value of it you only find pKa1= 2.15, pKa2= 7.20, and pKa3= 12.35 of phosphoric acid (H3PO4). What is the Kb value??

Chemistry
You have two buffer solutions 1) weak acid and its conjugate base 2)weak base and its conjugate acid. Write explicitly ( considering generic formula for acid and base) the equations of neutralization when you: a) add strong acid and strong base 1) b) add strong acid or strong ...

acid and base titrations
Which of the following solutions should be used when titrating a 25.00mL sample of CH3COOH that is approximately 0.1 M? a.) 0.150 M NaOH b.) 0.001 M NaOH c.) 3.00 M NaOH d.) 6.00 M NaOH

AP CHEM
The pKa of acetic acid is 4.74. What is the buffering range of this acid and its conjugate base? Explain.

chem 2
indictae the reactant that is a bronsted lowry acid. HCN(aq) +H2O (l)---> H3O+(aq)=CN-(aq) HCN CN- H20 H30 i think it is HCN the weak acid substance which acts as a proton (H+) donor and CN the weak base? You are right. The HCN donates the proton (to H2O) so that makes HCN ...

Science
I need help describing the difference between Arrhenius acid/base, Bronsted/Lowry acid/base, and Lewis acid/base. Everything online is too complicated! Thanks!

Chem 2
What is the approximate value of the K for the neutralization of nitrous acid with ammonia? Ka for the acid is 0.00045 and Kb for the base is 0.000018. Do I multiply Ka*Kb?

Chemistry Logic
How can I tell a conjugate base from a regular base and a conjugate acid from a regular acid? For example, in: H2O + HONH3 (reversible arrows) HONH2 + H3O+ What is the acid, base, conjugate base, conjugate acid? Is there no base and conjugate base since HONH3 is an acid? The ...

chemistry
Hi there, ok, my question stated "Use information from acid/base table and the value of Kw t ocalulate the base ionization constant, Kb, of the following bases: a)hypochlorite ion b) nitrite ion c) benzoate ion I looked at my acid/base table but it only gives values for ...

titrations
I have to find the correct acid-base indicator to use for the following titrations (methyl orange with end point @ pH 4, bromthymol blue with end point @ pH 7, or phenopthanlein with end point @ pH 9). I have several problems given to me, but first I'm trying to figure them ...

Chemistry
If an equal number of moles of the weak acid HOCN and the strong base KOH are added to water, the resulting solution will be acidic, basic or neutral? There is a complicated answer and a sensible answer. Both arrive at the same answer. But here is the logic for the sensible--I...

Chemistry
I just need someone to check my answers please :) On the pH scale are the following items base, neutral, or acid? 1. Hand Soap 2. Blood 3. Milk 4. Coffee 5. Orange Juice 6. Soda Pop 7. Vomit 8. Battery Acid My answers: 1. Base 2. Neutral 3. Neutral 4. Neutral 5. Base 6. Acid 7...

Titrations (chem)
In the titration of a 0.101 M sodium hydroxide solution, 19.02 mL of 0.130 M sulfuric acid solution was required to neutralize the sodium hydroxide in reactions that replace both hydrogen ions of the sulfuric acid. Calculate the number of milliliters of sodium hydroxide ...

chem. re+asap!
I got the rest, I just need help on the last one. My first post is down on this page. 6th one:I don't know how to write the equation. It would be acid over base but which is the acid and which is the base? My answer: I got the Ka to be 2.7x10^-1. The equation I got was: C6 H 5...

Chemistry
If two titrations were completed were completed: 1) the titration of HCl with Na(OH) 2)the titration of HCl with Ba(OH)2 (the concentrations of acid and base for both titrations are the same) How would the titration curves of each solution be different? I know what the ...

chem
1. 50.00 mL of an unknown monoprotic acid is titrated with 0.132 NaOH. It takes 25.25 mL of base to reach the equivalence point. Calculate the concentration of the acid.

Chemistry
What is the pH of the solution created by combining 2.00 mL of the 0.10 M base[ammonia] with 8.00 mL of the 0.10 M acid[acid acid]? I tried this problem so many times, but always got it wrong. It's a weak base and acid titration. but i don't know the method of do this type of ...

Acid/Base Chem
Determine the volume (in mL) of 1.18 M perchloric acid (HClO4) that must be added to 747 mL of 0.976 M sodium hydrogen citrate (Na2C6H6O7) to yield a pH of 4.77.

Chemistry
I don't understand how to work out the volumes of weak acid and strong base to mix to make 1L of buffer when given the concentrations of weak acid and strong base (in my case 0.160M NaOH and 0.200M H3PO4) and the pH required (7.00). Specifically the textbook is Fundamentals of...

Chemistry
I don't understand how to work out the volumes of weak acid and strong base to mix to make 1L of buffer when given the concentrations of weak acid and strong base (in my case 0.160M NaOH and 0.200M H3PO4) and the pH required (7.00). Specifically the textbook is Fundamentals of...

Chemistry
The following questions relate to acid base reactions. a) What type of reaction is said to occur when an acid reacts with a base.? ……………………………… b) What are the general products of such a reaction? i.e. An acid + a base produces...

college chem
A 0.1276 g sample of a monoprotic acid (molar mass = 1.10 x 10^2) was dissolved in 25.0 ml of water and titrated with 0.0633 M NaOH. After 10.0 ml of base has been added, the pH=5.47. What is the Ka for the acid?

Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?

Chemistry
Determine whether each of the following salts will form a solution that is acidic, basic, or pH-neutral? Al(ClO4)3-Acid LiCl-Neutral KClO2-BAse C6H5NH3NO2-Acid CH3NH3Br-Acid KCl-Neutral NaClO-Base NH4ClO-Acid Fe(ClO4)3-Acid C2H5NH3NO3-Acid Is this right?

pH- part 2
how much .10M Base (in mL) is needed to neutralize 8.00mL of .10M Acid? base- NaOH, acid- HCl, base volume (mL)- ? base- NaOH, acid- HC2H3O2, base volume (mL)- ? VaNa=VbNb Vb= 8ml*.10N/.10N= 8m.

Chemistry (Titration Curves)
Which of the following Acid+Base titration combinations would have a buffering region in their plot? 1)Strong Acid+Strong base (HCl+NaOH) 2)Weak acid and strong base (Acetic+NaOH) 3)Strong Acid and weak base (HCl+NH3) 4)Weak Acid and weak base (Acetic+NH3) In all cases, there ...

Chem
What is the pH of the resulting solution if 30.00 mL of 0.100M acetic acid is added to 10.00mL of 0.100 M NaOH? For acetic acid, Ka=0.000018. I know that NaOH is a strong base and acetic acid is a weak acid. What is the equation: C6H5COOH+NaOH<--> C6H5COOH Once I get ...

Chem
A tank car containing concentrated HCL (molarity 12.1) derails and spills exactly 1500 L of acid. Solid potassium hydroxide is required ot neutralize the spill. (a) Write a balanced chemical equation. HCl + KOH -> kCl + H2O (b) What is the molar ratio between acid and base...

HELP!! PLEASE CHEM LAB
When doing a titration, for example acid base, how do you know how much base to measure out and how much analyte to pour in the reaction flask?

CHEM REPOST...PLEASE CHEK!
Posted by Kat on Monday, March 2, 2009 at 11:21am. A solution of volume 80.0 mL contains 16.0 mmol HCHO2 and 9.00 mmol NaCHO2. If 1.00 ml of 12 M HCl is added to this, what will be the resulting pH? Responses * CHEM HELP...PLEASE!! - DrBob222, Monday, March 2, 2009 at 1:25pm ...

AP Chemistry
A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or a weak acid with a weak base? b. Estimate ...

AP Chemistry
A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base, or a weak acid with a weak base? b. Estimate ...

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

Chemistry
Write the chemical equation showing dihydrogen phosphate and hydrogen phosphate conjugate acid-base relationship. Identify the acid and base. Explain how the equilibrium is shifted as buffer reacts with an acid and reacts with a base.

chem
Classify each of the following reactions in as many ways as possible. (Select all that apply.) CuO + 2 HCl --> CuCl2 + H2O you can select: -acid-base(unsure because there is an acid but im not sure if theres a base) -double-displacement -gas evolutionx -oxidation-reduction ...

CHEMISTRY
Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number of moles of acid ...

Chemistry
Strong base is dissolved in 675 ml of 0.200 m weak acid (ka=3.25x10^-5) to make a buffer with a ph of 3.95. Assume that the volume remains constant when the base is added. HA + OH ---> H2O + A^- calculate the pka value of the acid and determine the number of moles of acid ...

Chemistry
What effect would be on the normality of unknown acid? Explain why. a) if NaOH solution is pipetted into a conical flask containing some distilled water b) if an air bubble is out from the burette c) if too much acid is ran out during both titrations although the volumes of ...

chem
classify each of the following as a lewis acid or base: Cl- BeCl2 B(CH3)3 P(Ch3)3 Cl- is an acid right? i'm not sure i understand this concept very well. :[ and i tried looking at my notes already.

AP CHEM
You need to use KH2PO4 and K2HPO4 to prepare a buffer with a pH of 7.45. Which of the following ratios of [base]/[acid] is required? For phosphoric acid, (H3PO4), Ka2 = 6.2 × 10–8. Do I use the Hasselbach equation?

chemisty
600 mL of an unknown monoprotic acid was titrated with a standard solution of a 1.0 M base. If it took 40.0 mL of the base to neutralize the acid, what was the H+ ion concentration of the acid in moles per Liter?

chem+Acid-Base Reactions
Hey..can you check this for me. It has to do with Predicting Acid-Base Reactions. So here it is: I have to: Predict the most likely acid base reaction(s) that occur. For each reaction, state if the reaction is quantitative, or, if not, state whether products or reactants are ...

CHEM
is NH3 a base or an acid how do u tell?

chem
A beaker with 120mL 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 5.70mL of a 0.450M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid ...

chemistry
Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)<--->LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate acid Thank ...

chemistry
Write the balanced net ionic equation for the following reaction and determine the conjugate acid-base pairs. HNO3(aq)+Li2CO3(aq)<--->LiNo3(aq)+LiHCO3(aq) Which component in the net ionic equation is the acid, the base, the conjugate base, and the conjugate acid Thank ...

Chem
Bronsted reaction HCO3-+HF<--> acid?+base?

Chemistry
A buffer containing 1.2169 M of acid, HA, and 0.1431 M of its conjugate base, A-, has a pH of 3.96. What is the pH after 0.0017 mol NaOH is added to 0.5000 L of this solution? I can't figure this out for the life of me, i'm sure its just some simple mistake i'm making but can ...

Chemistry
This a back-titration problem, the equation is (mass/molar mass * na)+ (Ma * Va* na) = (Mb * Vb* nb. do the na and nb variables refer to the moles of the acid and base, or the moles of H and OH? acid and base acid and base

chemistry
Classify each substance as either arrhenius acid or base: A) HF (aq) B) Ba(OH)2 (aq) C) H2SO4 (aq) D) NH4OH (aq) My work A) arrehenius acid B) arrhenius base C) arrhenius acid D) arrhenius base Am i right

chemistry
What is the pH of the solution created by combining 12.00 mL of the 0.10 M base with 8.00 mL of the 0.10 M acid acid: acetic acid base: ammonia

chem
For the following reactions, name the Bronsted-Lowry acids and bases. Then name the conjugate acid and bases. H3O+(aq) + CN-(aq) <==> HCN(aq) + H2O I'm really confused on this whole concept even thought it's not really difficult. I said: acids: H3O+ bases: CN- conjugate ...

Chemistry
Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: H20 + H20 <-> H30^+ + OH^- Let's see what you think on this after the previous post. Just remember, the acid is the one that HAS the H and the base is ...

chem
is a formate ion (HCOO-) an acid or a base? how would you know?

Chemistry
In the titration of a weak acid with a strong base, the pH at the equivalence point is affected mostly by a.hydrolysis (reaction with water) of the weak acid b.the dissociation of water molecules c.the presence of excess base d.the hydrolysis of the conjugate base of the weak ...

CHEM LAB
Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change equals 9.80 degrees C, 50.0mL of 1.00 M ...

CHEM LAB
Calculate the Molar Enthalpy of Neutralization in kJ/mol of the reaction between a monoprotic acid and a monoprotic base, given the following information: *Make sure you report your answer using the correct sign* The temperature change equals 9.80 degrees C, 50.0mL of 1.00 M ...

Chem+ASAP+2 fill in the blank questions+ASAP!!!
PLease check this. They are fill in the blank and I just need to know if they are right. Thanks! 9. Compared to a strong acid-strong base titration curve, a weak acid-strong base titration curve has a (higher, lower) __higher___ initial pH value. 10. Compared to a strong acid-...

college
1) You are given solutions of HCl and NaOH and must determine their concentrations. You use 37.0mL of NaOH to titrate 100mL of HCl and 13.6 mL of NaOH to titrate 50.0mL of 0.0782 M H2SO4. Find the unknown concentrations. Molarity of NaOH and molarity of HCL? 2) Sodium ...

Chemistry
1) You are given solutions of HCl and NaOH and must determine their concentrations. You use 37.0mL of NaOH to titrate 100mL of HCl and 13.6 mL of NaOH to titrate 50.0mL of 0.0782 M H2SO4. Find the unknown concentrations. Molarity of NaOH and molarity of HCL? 2) Sodium ...

chem(molarity)
a buffer contains 0.010 mol of lactic acid and 0.050 mol of sodium lactate per liter . How do I find the molarity of the acid and base?

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