Friday
November 21, 2014

Search: which reactions between HCL, AgNO3, Pb(NO3)2, H2SO4, BaCl2, CuSO4, KI, ZnSO4, Na2CO3, and K2CrO4 are double replacement

Number of results: 33,258

Chemistry
How many grams of CuSO4 * 5H2O are needed to prepare 100mL of a 0.10 M solution ?
April 4, 2013 by Jade

chemistry
how many grams of chromium are required to react with 125 mL of 0.75M CuSO4?
December 16, 2013 by grant

Chemistry
I was supposed to figure out whether the following equations produced precipitates or not. Here are my answers, but I know that they are wrong. So I still can't figure out where I'm messing up...? Please help! HgCl2 (aq) + K2CrO4 (aq) = Yes Ba(OH)2 (aq) + NaClO3 (aq) = No ZnI2...
January 13, 2008 by Cierra

Chemistry
Alumminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3+H2SO4-->Al2(SO4)+6H2O. Which reagent is the limiting reactant when 0.500 mol Al(OH)3 and 0.500 mol H2SO4 are allowed to react? How many moles of Al2(SO4)3 can form under these conditions? How many moles of ...
October 29, 2010 by Chris Sung

chemistry
The purity of a pharmaceutical preparation of sulfanilamide, C6H4N2O2S, can be determined by oxidizing the sulfur to SO2 and bubbling the SO2 through H2O2 to produce H2SO4. The acid is then titrated with standard NaOH. Calculate the purity (%w/w sulfanilamide) given that 1.457...
February 15, 2012 by darren

statistics
a box contain five silp of paper marked 1,2,3,4and5 tow silp are selected without replacement,list the possible vaule for each of following random variable the sum of two number on two silp the difference between the first and second number
April 18, 2014 by shumaila.imtiaz

chemistry
How many grams of Na2CO3 can be produced from 2.715 g NaHCO3?
October 17, 2009 by Rose

chemistry
How many grams of Na2CO3 can be produced from 2.715 g NaHCO3?
October 17, 2009 by Rose

Chemistry
calculate the grams of sodium in 17.606 g of Na2CO3
October 22, 2010 by HELP

peter-nchabeleng
na2co3(s)-h2o(l)2na+(aq)+co32-(aq)
August 4, 2014 by clemy

chemistry
Find the percentage of water in Na2CO3*2H2O?
November 19, 2014 by kim

college
A solid is known to be either BaCO3 or CaCO3. It is dissolved in 6 M acetic acid. A pale yellow precipitate forms when K2CrO4 solution is added. The subsequent flame test with that precipitate shows an orange-red color. Which cation is present? Briefly explain
March 22, 2013 by Anonymous

chem 2
I just need help setting up this equation. NH3 is titrated with HCL. Does this mean the reaction is this? NH3 + HCL --> NH4 + CL- ??
July 6, 2009 by Anonymous

Chemistry
Given HCL + SrO --- SrCL2 + H20 Calculate the mass of HCl in grams that would react with 4.85 kg SrO.
November 17, 2011 by nms

Chemistry
It requires 17.9 mL of 0.120 M KOH to titrate 78.0 mL of an HCl solution of unknown concentration. Calculate the initial HCl concentration.
February 27, 2012 by Kyle

CHEMISTRY HELP!!!
21. Classify the following solutions in order of increasing pH: a. 0.01 M NaOH b. pure water c. 0.10 M HCl d. 0.05 M NaOH e. 0.001 M HCl
May 1, 2013 by scilover

chemistry
It requires 23.2 mL of 0.250 M KOH to titrate 49.0 mL of an HCl solution of unknown concentration. Calculate the initial HCl concentration.
March 18, 2014 by amber

science
Where does energy come from? Energy can come from the complete destruction of matter (as in nuclear reactions), or the rearrangement of electrons or other charged particles inside matter (as in chemical reactions) or from electromagetic fields (as in light and heat radiation...
July 24, 2006 by Sandra

CHEMISTRY
ANTACID TABLET OF WEIGHT 1.3183G WAS DISSOLVED IN 75 MLOF CONC. HCl OF 0.1807M IS TITRATED WITH 20.36ML OF CONC. NaOH OF 0.1481M . FIND MILIMOLES OF HCl ADDED, FIND MILIMOLES OF NaOH USED IN TITRATION, FIND MILIMOLES OF HCl THAT DID NOT REACT WITH ANTACID, FIND MILIMOLES OF ...
October 16, 2011 by Anonymous

Chemistry
100 mL of each of the following solutions is mixed; which one of the mixed solutions is a buffer? A) 1.0 M NH3(aq) + 0.6 M KOH(aq) B) 1.0 M NH4Cl(aq) + 1.0 M KOH(aq) C) 1.0 M NH3(aq) + 0.4 M HCl(aq) D) 1.0 M NH4Cl(aq) + 0.4 M HCl(aq) E) 1.0 M NH3(aq) + 1.0 M HCl(aq) I am ...
March 14, 2010 by Trixie

chemistry
how many mililiters of a 0.27 M HCl solution are needed to react completely with 2.7 g of zinc to form zinc (II) chloride?" equation. 2 HCl + 1 Zn -----> 1 ZnCl2 + 1 H2
July 12, 2010 by Nicole

chemistry
theoretical yield of NaCl using 0.016 mols HCl with HCl + NaOH - NaCl + H2O as the equation for the reaction
May 1, 2011 by Anonymous

chemistry
How many grams of CaO (56.08) are required for complete reaction with HCl (36.46) in 275 mL of a 5.90 M HCl solution? CaO + 2HCl --> CaCl2 + H2O.
February 22, 2012 by Anonymous

chemistry
31.0mL sample of LiOH, concentration unknown, is titrated with .52 M HCl. It takes 42.9 ml of HCl to reach the endpoint. What is the concentration of the base?
April 26, 2012 by kendra

chemistry
What volume of a concentrated hcl solution which is 36% by mass and has a density of 1.179 g/ml to make 4.85L of an hcl solution with ph of 1.9? Who helps me to solve it for me.
August 4, 2012 by Fai

chemistry
anyone help me . .what volume of concentrated HCL solution whoch is 36% by mass and has a density of 1.179 g/ml , should be used to make 4.7 L of hcl solution with a pH of 1.8 ?
February 13, 2013 by m

chemistry
A 337-\rm mL sample of unknown \rm HCl solution reacts completely with \rm Na_2CO_3 to form 17.1g \rm CO_2. What was the concentration of the \rm HCl solution?
April 7, 2013 by Lauren

chemristy
How many mL of 8.0 M HCl must you dilute with an appropriate volume of H2O to prepare a total volume of 260.0 mL of 1.5 M HCl?
February 27, 2011 by Herman

chemistry
what is the molarity of a HCl solution that contains 13.0 g of HCl in 125 mL of solution? Answer in units of M is it 3791.944 ?
March 8, 2012 by please help !

Chemistry
2 Fe (s) + 6 HCl (aq) -> 2 FeCL3 (s) + 3 H2 (g) Given 16 g of HCl and 10g Fe react with how many grams of FeCl3 are produced (limiting reactant)?
May 24, 2012 by Lily

Chemistry
what volume, in L, of a 10.0M HCL solution is needed to make 2.00L of 2.00m HCL solution by dilution with water. Thank you
September 1, 2012 by kate- Please help

chem
what is the balance reaction when HCL reacts with NH3? is it HCl+NH3-->NH4Cl am I right correct me pls.
October 26, 2012 by carina 78

Chemistry
2 ml of 1M HCl 0 ml of H2O 3ml of .3M Na2S2O3 How do I find the initial and final concentrations of both HCl and Na2S2O3?
January 7, 2013 by Nicole

Chemistry
Using the balanced equation of: HCl+NaOH-->H20+NaCl, how many moles of HCl could be neutralized with 13.2 mL of 3.00 M NaOH?
February 26, 2013 by Alicia

chemistry
According to the reaction NaOH + HCl NaCl + H2O, which is the limiting reactant when 37.0 g of HCl are mixed with 37.0 g NaOH?
April 18, 2013 by Anonymous

chemistry
How many grams of NaOH would be needed to react with 199 g of HCl? NaOH + HCl --> NaCl + H2O
July 15, 2013 by ren

Chemistry
How many grams of HCl are needed in order to make 0.500 liters of a 0.100 M HCl solution? 1.82 g 18.2 g 0.500 g
June 6, 2014 by Anonymous

Chemistry
In this lab experiment you will make 100.0 mL of a 0.100 M solution of Co(NO3)2. However you must calculate the number of moles of compound that will be needed (moles= Molarity x Liters).Then calculate the mass of Co(NO3)2 that will need to be weighed out (mass= moles x molar ...
November 19, 2012 by Melissa

Chemistry
A student cleaned a crucible with HCl. After pouring the HCl into the waste container, the crucible was neither rinsed with water or dried before the student added the NaHCO3 and KCl mixture. The crucible contained some residual HCl. How would this experimental error affect ...
February 2, 2014 by Sandy

Into. Chemistry
I'm trying to do this precipitation reaction problem, but I don't understand part of it. The question is: Does a precipitate form when aq. soultions of potassium nitrate (KNO3) and sodium iodide (NaI) are mixed? Then it lists the solutions for the two: KNO3(aq) --> K+(aq...
November 30, 2012 by Emily

Chemistry
Hey, can you help me on this question: Question: A 2.3 kg iron object is placed in an oxygenated tank of 1.00 mol/L hydrochloric acid. What volume of hydrochloric acid would react to completely consume the iron object? My question: when I seperate the H and Cl, and make the ...
July 17, 2006 by Dave

chemistry
A mixture of CaCO3 and MgCO3 weighing 7.85 g was reacted with excess HCL. The reactions are CaCO3+2HCL=CaCl2+H2O+CO2 and MgCO3+2HCl=MgCl2+H2O+CO2. The sample reacted completely to produce 1.94 L CO2 at 25 degrees C and 785 torr. Calculate the percentage of CaCO3 and MgCO3 in ...
October 17, 2010 by Sue

Physics
Can you please explain further because I don't understand? Posted by Mary on Wednesday, November 14, 2007 at 4:23pm. A wavelength of 625 nm is used in a Young's double-slit experiment. The separation between the slits is d = 1.3 10-5 m. The total width of the screen is 0.20 m...
November 14, 2007 by Mary

physics
You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?
November 21, 2009 by christina

gr. 12 english - Double Negatives and Modifiers
I'm going to ask for a little help tonight. Does the following sentence have double negatives, misplaced or dangling modifiers? "I left my agenda in a restaurant which had all my important dates in it."
February 10, 2010 by AL 87

Chemistry
What is the product of mixing solid AgCl in a solution of HCl? Is it just AgCl + HCl, or is it AgCl2 + H2 (ignoring balancing right now).
October 1, 2008 by AJ

Chemistry
Given the following reaction: HCl(g) + SrO(s) SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 11.44 kg SrO.
November 25, 2010 by andrea

Chemistry
Calculate the pH of a 25 mL sample of distilled water after the addition of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL of NaOH and HCL. (0.1 M HCl and NaOH) In total, you need to show 10 calculations.
March 14, 2011 by Mariah

chemistry2
Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution
May 11, 2011 by Daniel Forero

chemistry
If 5.20 g of HCl is added to enough distilled water to form 3.00 L of solution, what is the molarity of the solution? [Use molecular weight: HCl, 36.46 amu]
October 29, 2011 by Chemistry Chick

chemistry
For the balanced reaction HCl(aq) + NaOH(aq) ? H2O(l) + NaCl(aq), how many moles of H2O could be produced from 25 g HCl? (You have already done this type of question!
November 29, 2011 by valarie

chemistry
You have 26.44 mL of 1.83 M HCl in a beaker. You dilute this acid with 40.08 mL of water. When you analyze the solution you find that the number of moles of HCl in the new solution is
December 5, 2011 by Anonymous

Environmental Chemistry
Calculate the pH when the following volumes of 0.20 M LiOH are added into 50 mL of a 0.1 M HCl solution. Both LiOH and HCl are strong electrolytes. a) 0 mL b) 10 mL c) 24.6 mL d) 25 mL e) 25.6 mL f) 30 mL g) 40 mL
May 8, 2012 by Dauren

Chemistry
You have .8 liters of a 0.5M HCl solution. If you use this solution to complete a decomposition reaction of HCl how many moles of hydrogen (H2) would be produced?
April 2, 2013 by John

Chemistry
What is the volume of HCl stock (37%) you must add in order to make up a 10.0% diluted HCl solution, if the final volume to be achieved is 600mL?
May 27, 2013 by Kayden

Chemistry
Either my online portal hates me, or I don't understand how to balance properly. QUESTION Balance reaction of arsenic(III) sulfide with nitric acid As2S3(s) + NO3-(aq) → H3AsO4(aq) + S(s) + NO(g) Is this the correct balanced equation? 32 H2O + 24 As2S3(s) + 80 H+(aq) + ...
June 21, 2013 by Sara

chemistry
what does amines plus acids yeild? salts. RNH2 + HCl ==> RNH2*HCl ==>RNH3Cl
April 4, 2007 by kim

chem
The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O is ?????? M. The density of the solution is 0.79 g/mL. A) 21 B) 0.93 C) 6.0 10-4 D) 1.72 E) 0.58
September 26, 2010 by benju

Chemistry
Determine the volume of concentrated HCL and the volume of water needed to produce 20mL of 6M HCL.
January 26, 2011 by Michelle

Chemistry
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) If 2.00 g of Mg reacts completely with 50.0 mL of HCl solution, what is the molarity of the HCl solution?
July 9, 2011 by Jayne

Chemistry
24.5 mL of concentrated HCl is diluted to make 455 mL of .256 M solution. What is the molarity of the concentrated HCl?
October 25, 2011 by DJ

Chemistry
A 5.0 mL sample of HCl is placed in a flask. Titration required 15.0 mL of .20 M NaOH. What is the molarity of the HCl in the sample?
March 24, 2013 by Michael

chemistry
An aqueous solution of HCl has a concentration of .160m and a density of 1.0691 g/mL. What is the concentration of HCl as molarity?
February 20, 2014 by Ted

Chem
A student placed a mixture of BaO and CaO in a 1.46L flask containing carbon dioxide at 35C and 746mmHg. After the reactions were complete she found that the CO2 pressure had dropped to 2.40 x 10^2mmHg. How many moles of CO2 were consumed in the reactions? Assume volumes of ...
March 3, 2010 by Staci

Chemistry II
what is the complete & balanced equation for the following reactions & include the catalysts if any: 1. Combustion of Methane: 2. Halogenation of Cyclopentene with Br2 4. Hydrogenation of 3-methyl-1-butyne 5. Combustion of 2-methylpropene 6. Hydrohalogenation reaction between ...
February 4, 2014 by Jessie

Brad
My problem is calculate the molarity of HCl and NaOH (molarity of acid)x(volume of acid)=(molarity of base)+(volume of added base) HCl=acid NaOH=base HCl volume = 25mL=0.025L NaOH=67.05mL=0.06705 molarity = moles of solute Liters of a solution M=0.015000 moles of NaOH 0.06705L...
February 19, 2008 by Chemistry

chemistry
My problem is calculate the molarity of HCl and NaOH. (molarity of acid)x(volume of acid)=(molarity of base)+(volume of added base) HCl=acid NaOH=base HCl volume = 25mL=0.025L NaOH=67.05mL=0.06705 molarity = moles of solute Liters of a solution M=0.015000 moles of NaOH 0....
February 19, 2008 by Brad

math 7
if you have 8 marbles in the bag (5 blue and 3 green) and you draw 2 with replacement, what is the theoretical probability that both marbles wil be green how does the probability of getting two greens change if you are not replacing?? if you have 8 marbles in the bag (5 blue ...
February 10, 2013 by unknown.gonegirl

Chemistry: Compound
1) ZnSO4 would it be Zn(SO4) does the polyatomic ion always have to have ( ) ? 2) Is Ba(SO4) right? since Ba is 2+ and SO4 is 2- right? 3) In a net ionic equation for BaCI2 would it become Ba ^(2+) + 2CI or Ba ^(2+) + CI2 ?
September 8, 2010 by Amy~

Quick English check
The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do. please correct me if I'm wrong! 5. He removed the picture from ...
September 7, 2014 by Anonymous

Quick English check
The sentences below have transitive verbs so each verb has a direct object. Read each sentences and underline its direct object. (Underline the subject once, and double underline the action verb and circle the do. please correct me if I'm wrong! 1. He removed the pictures from...
September 8, 2014 by Anonymous

Chemistry
Would you store a solution of zinc nitrate in an aluminum container? Use half-reactions to explain your answer. Al ==> Al^+3 + 3e Zn ==> Zn^+2 + 2e Look up the above half reactions and you will see that the Al will go into solution and the Zn+2 will come out. Eventually...
January 21, 2007 by J.M.

Chemistry
The most chemically reactive metal elements are the alkali metals. They react spontaneously with water or other substances in the atmosphere and must be stored under oil. a. What type of reactions will these metals undergo? b. Explain why these metals are so reactive in the ...
November 19, 2013 by Heather

Chemistry
I need help I can't seem to get the right answer. Please help! 1/2 H_2 (g) + 1/2 Cl_2 (g) --> HCl (g) -92.3 kJ/mol Na(s) + 1/2 O_2(g) + 1/2H_2(g) --> NaOH(s) -426.8 kJ/mol NaCl(s) --> Na(s) + 1/2Cl_2(g) 411.1 kJ/mol H_2O(l) -->H_2(g) + 1/2O_2(g) 285.8 kJ/mol HCl(g...
November 8, 2013 by Alex

Science
how many mililiters of a 0.4 molar HCl solution are needed to react completely with 13 grams of zinc according to the following equation? Equation. 2 HCl + 1 Zn -----> 1 ZnCl2 + 1 H2
July 13, 2010 by Nicole

Chemistry
how many mililiters of a 0.4 molar HCl solution are needed to react completely with 13 grams of zinc according to the following equation? Equation. 2 HCl + 1 Zn -----> 1 ZnCl2 + 1 H2
July 13, 2010 by Nicole

college chem
Calculate the pH of a 25 mL sample of distilled water after the addition of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL of NaOH and HCL. (0.1 M HCl and NaOH) In total, you need to show 10 calculations.
March 14, 2011 by Mariah

chemistry
25ml of 0.05M of NaOH and the average volume of HCl is 17.7ml after titration and the concentration of HCl is 0.1028M. Find the [OH] eq (from titration). How do u solve this...
March 23, 2011 by roshan

chemistry urg!
Hydrochloric acid is sold as a concentrated acqueous solution. If the molarity of HCl is 12.0 and its density is 1.18 g/ml. calculate A) MOLALITY B)THE % BY MASS OF HCl in the solution
May 11, 2011 by Daniel Forero

Chemistry
f 27.0 mL of Ca(OH)2 with an unknown concentration is neutralized by 32.40 mL of 0.185 M HCl, what is the concentration of the Ca(OH)2 solution? Show all of the work needed to solve this problem. Ca(OH)2 + 2 HCl 2 H2 O + CaCl2.
June 13, 2011 by Johnny

chemistry
Given the following reaction: HCl(g) + SrO(s) → SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 7.70 kg SrO
November 14, 2011 by riali

chemistry
What volume of 2.00 M HCl must you use to prepare 100. mL of 0.500 M HCl? (Hint: Just use the dilution equation! MiVi = MfVf)
December 6, 2011 by kathy

Chem
Zinc reacts with HCl to produce ZnCl2 and Hydrogen gas, H2. What volume, in ml of a 1.25 M solution would be required to completely react with 3.27 g of Zn? Zn(s) + 2 HCl (aq) -------> ZnCl2 + H2
December 13, 2011 by Meagan

Chem simple question
how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL I know the answer came out to 20.4 ml My only question is how do I convert HCL to Sr(OH)2
September 29, 2013 by Julie

Chemistry
For an enthalpy lab, why would calculated value differ from the theoretical value (in percent error) for the heat reaction of Mg/HCl and MgO/HCl
July 21, 2014 by Liz

science
commercially available concentrated H CL contains 38% H CL by mass (a) what is the molarity of this solution if the density in 1.19gm/l (b) what volume of concentrated HCL is required to make 1l of 0.1M HCL?
July 27, 2014 by anila

gen chem 1
You carefully weigh out 20.00g of \rm CaCO_3 powder and add it to 81.00g of \rm HCl solution. You notice bubbles as a reaction takes place. You then weigh the resulting solution and find that it has a mass of 92.80g . The relevant equation is \rm CaCO_3{\it (s)}+2HCl{\it (aq...
May 22, 2013 by bc

Chem Equation
In a lab expirement you add copper(II)nitrate to pure zinc. Write a balanced equation for this expirement and predict if a reaction will occur. Zinc is more active than copper, so zinc will donate electrons to the copper ions, precipating it as copper. Cu(NO3)2 (aq) + Zn (s...
January 4, 2007 by alisha

science
Posted by Josh on Saturday, March 17, 2007 at 10:58pm. How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? For Further Reading science - DrBob222, Saturday, March 17, 2007 at 11:07pm 1. Write the ...
March 18, 2007 by Josh

chemistry
Consider the reaction HCl + NaOH ->NaCl + H2O Given: HCl Solution: 22 degrees celsius NaOH Solution: 22 degrees celsius Final Temperature: 26.1 degrees celsius A. Calculate the amount of heat evolved when 15 mL of 1.0 M HCl was mixed with 35 mL of 1.0 M NaOH B. Calculate ...
March 28, 2011 by Vanessa

science
why is the angle between the left and right angle reading, double that of the angle of diffraction. Exact answer not needed but a little help appreciated many thanks SG
August 24, 2008 by societygirl

chemistry
A 25.00 mL sample of 0.4 M dimethylamine (CH3)2NH is titrated with 0.150 M HCl. What is the pH at the half-equivalence point? Not sure what to do here exactly, I'm bad with the titration problems. I know there are normally a couple tables (finding the number of moles at the ...
July 30, 2011 by 1/2 equivalence point

Chemistry
Calculate Activation Energy, Ea, for each of the reactions, above? ln(k)= -2.24x10^4(1/T)-1.8. The reactions are Step 1: 2H2 + N2 -> N2H4, Step 2: N2H4 + H2 -> 2NH3, Overall: 3H2 + N2 -> NH3. This is all the information i have. i Don't know how to solve for the ...
June 4, 2013 by Max

chemistry
Arrange the following aqueous solutions in order of increasing freezing points (lowest to highest temperature): 0.10 m glucose, 0.10 m BaCl2, 0.20 m NaCl, and 0.20 m Na2SO4.
March 8, 2011 by Bianca

AP CHEMISTRY
Commercial brass, an alloy of Zn and Cu, reacts with hydrochloric acid as follows. Zn(s) + 2 HCl(aq) ZnCl2(aq) + H2(g) (Cu does not react with HCl.) When 0.5093 g of a certain brass alloy is reacted with excess HCl, 0.0953 g ZnCl2 is eventually isolated. (a) What is the ...
August 1, 2013 by Kris

chemistry
What is the balaced net ionic for this equation: PbNO3+CuSO4-->PbSO4+CuNO3
March 7, 2010 by Nichole

Chemistry
how many moles of water are contained in 0.250 mile of CuSO4 * 5H2O? please help me
December 31, 2010 by Kiran

chem
what mass of KIO3 is needed to convert the copper in 0.2 g of CuSO4 5H20 to Cu(IO3)2
January 21, 2011 by midget

10th grade chemistry
How many grams of CuSO4.5H2O are needed to prepare 100. mL of a 0.to M
April 26, 2011 by Angelica Martinez

Chemistry
@ 20 degrees C is 6g CuSO4 in 25g of H2O saturated or unsaturated? How do I figure this out?
May 4, 2011 by Curlyqty

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