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August 25, 2016

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

Number of results: 70,079

Chemistry
SO2(g) + NO2(g) SO3(g) + NO (g) At a given temperature, analysis of an equilibrium mixture found [SO2] = 4.00 M, [NO2] = 0.500 M, [SO3] = 3.00 M, and [NO] = 2.00 M. (a) What is the new equilibrium concentration of NO when 1.50 moles of NO2 are added to the equilibrium mixture...
May 11, 2009 by Andre

Chemistry
The maximum solubility of silver sulfate, Ag2SO4 [molar mass = 312], is 4.50 g/L at 25C. Silver sulfate dissociates by the reaction below: Ag2SO4(s) <--> 2 Ag+ (aq)+ SO4 (aq) 1.What are the [Ag+] and [SO4] in a saturated solution of silver sulfate made by dissolving...
March 20, 2011 by Paul

Chemistry
3H2(g)+N2(g)=2NH3(g) Suppose the equilibrium constant Kp = 0.003337 for the reaction above. If the equilibrium mixture contains partial pressures H2 = 0.400 atm and N2 = 0.350 atm. What is the equilibrium partial pressure of NH3 in atm?
September 23, 2010 by Tiffany

Physical Science
Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat A. the pressure is increased. b. the temperature is decreased.
February 8, 2013 by Ed

Chemistry
Determine the concentration at equilibrium if you start with 4.65 grams of Hydrogen and 200 grams of Iodine in a 4.55 liter container. If you now add an extra 1.25M of I2 after equilibrium, calculate Qc. Recalculate now what the concentrations should be at equilibrium. H2(g...
July 28, 2015 by Jessica

Chemistry-pls help urgent
Posted by candy on Tuesday, October 12, 2010 at 5:04pm. 1) How do I prepare 2M nitric acid from 65% concentrated nitric acid? 2) How do I prepare 17% ammonia from 25% concentrated ammonia? Please show calculation steps. Thanks. Chemistry -pls help urgent - DrBob222, Tuesday, ...
October 12, 2010 by candy

Precalculus
Which of the following is a solution for the equation 1/485tan^2x = 0? a) pi b) pi/2 c) 485pi d) no solution Which of the following is NOT a solution to the equation 4sin^2x = 1 for 0≤x≤2pi? a) 30 degrees b) 210 degrees c) 150 degrees d) 120 degrees?
January 27, 2012 by Melissa

chemistry
how is possible that we can get esters of carbon acid anhydrides but of esters we can't make anhidrous acids?
February 6, 2008 by black

chemistry
I am suppose to measure 55mL of 1.0 M hydrochloric acid in a 100 mL graduate and dilute this to 100.0 mL. How do I do this?
July 16, 2008 by Anonymous

chemistry
Write Sulfuric acid and potassium hydroxide where the products are potassium sulfate and water.
February 16, 2009 by Liz

chemistry
For 0.250 M of weak acid (NaHS) the Kb is given by 1.22 x10-13 , calculate the pH of the weak base.
April 18, 2009 by lil'mama

Biochem
10ml of HCl acid titrate with 9.9ml of NaOH. What is the mass in grams of HCl?
August 3, 2010 by Amrik

Chemistry
How do you calculate the volumes of the acid solutions (1.50M HCl, 1.50M HNO3, and 1.50 M H2SO4?
April 5, 2011 by Katie

chemistry
When a particular chemical compound can act as either an acid or a base we say that compound is
December 5, 2011 by Anonymous

science
using 0.5 m hci acid from a stock that is5m hci have to prepare 250 ml
February 25, 2012 by radika

chemistry
what is the pH and pOH of a soution with a volume of 5.4 that contains 15 grams of HCl and 25 grams of nitric acid
March 10, 2012 by Anonymous

chemistry
alternative reaction for acrylic acid and analyzing reaction for finding gross profit
January 10, 2013 by rajib

Chemistry
What is the ph at the equivalence point for a titration of 250 mL of 0.17M piperidine with 0.17 M nitric acid. (piperidine: Kb = 1.3 x 10-3)
April 23, 2013 by Chloe

Chemistry
Why does the titration of terephthalic acid yield a mass of approximately half the molar mass?
April 27, 2013 by Sam

Chemistry
If 2.5 grams of citric acid (H3C6H5O7) reacts, how many grams of carbon dioxide will be generated?
March 5, 2014 by anonymous

chemistry
Hydro chloric acid is usually purchased on the concentration of 36.5% . Why it is not obtained in 100% concentration?
September 22, 2014 by Herin

chemistry
state four differences between acid-base indicators and universal indicators
October 3, 2014 by isaac

Chemistry
I am doing a lab and broke my glass beaker. Is it of to put 0.1 M hydrochloric acid in a plastic beaker?
December 11, 2014 by Morgan

chem
How many grams of calcium chloride will be produced when 30.0g of calcium carbonate are combined with 14.0g of hydrochloric acid?
February 12, 2015 by Anonymous

Science
The stage of viral replication in which the viral nucleic acid is released inside the cell is ?
February 5, 2016 by Anonymous

case
If one of salicylic acid has a mass of 0.2g calculate the mass of aspirin that should be formed?
April 8, 2016 by tarain

Science
18 g of hydrochloric acid reacts with 15 g of calcium hydroxide produce calcium chloride and water.
April 26, 2016 by Jaime

chemistry
An unkown vol of 2Mol of NaOH reacted with 3g of ethanoic acid .....get the volume of NaOH
April 27, 2016 by Linus

Chemistry
A solution of potassium hydroxide is in equilibrium with an undissolved solute at 45 degrees Celsius. What will happen to the mass of the potassium hydroxide if the temperature is raised to 50 degrees Celsius? (Given that heat of solution is -57.6kJ/mol)Please explain as well.
December 14, 2012 by Dayton

Science
The following DNA sequence represents a eukaryotic gene. Indicate which is the template and which is the coding strand, determine where transcription begins (assume it ends at the end of the sequence presented), write out the nucleotide sequence of the initial transcript and ...
March 7, 2012 by HomeworkHatesMe

chem
1) If more reactant is added to a gaseous reaction at equilibrium, what will happen to the value of the equilibrium constant? a. it will increase b. it will decrease c. it will remain the same d. it can either increase or decrease 2) Which of the following describes a property...
February 1, 2012 by HEATHER

chem AP
Give a scientific explanation for the following observations. Use equations or diagrams if they are relevant. A. burning coal containing a significant amount of sulfur leads to "acid rain". B. Perspiring is a mechanism for cooling the body. C. At room temperature, NH3 is a gas...
January 28, 2008 by ivy

Chemistory
The reaction has an equilibrium constant of = 0.154. If 6.60 of , 4.30 of , and 11.60 of are added to a reaction vessel with a volume of 5.30 , what net reaction will occur? A-The reaction will proceed to the left to establish equilibrium. B-The reaction will proceed to the ...
April 18, 2013 by Anonymous

Chemistry
1. Regarding solutions and solids, which statement is true? A. If the solvent is water, the crystal lattice energy of a solid is absorbed. B. Hydration energy is related to the attractions between solute particles. (My Answer) C. If the solvent is water, the crystal lattice ...
October 24, 2011 by Anonymous

Chemistry
At a certain temperature, the equilibrium constant for the following chemical equation is 2.00. At this temperature, calculate the number of moles of NO2(g) that must be added to 2.64 mol of SO2(g) in order to form 1.10 mol of SO3(g) at equilibrium. SO2(g) + NO2(g) <--->...
April 2, 2013 by Dee

Chemistry
Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g) Suppose you wanted to dissolve an aluminum block with a mass of 14.5g . 1.) What minimum mass of H2SO4 would you need? 2.)What mass of H2 gas would be ...
March 29, 2015 by Katie

college2
What is the ratio of the activities of Zn 2+ and Pb 2+ in a solution that is in equilibrium with respect to sphalerite and galena?disregard hydrolysis effet
September 11, 2010 by moon

chem "help"
What is the ratio of the activities of Zn 2+ and Pb 2+ in a solution that is in equilibrium with respect to sphalerite and galena?disregard hydrolysis effect
September 13, 2010 by moon

chem hw "help"
What is the ratio of the activities of Zn 2+ and Pb 2+ in a solution that is in equilibrium with respect to sphalerite and galena?disregard hydrolysis effect
September 15, 2010 by moon

Chemistry
I got 4.9*10^-3 M. Thanks and If the resulting solution has a volume of 1.9L , what is the minimum mass of CaSO4 (s) needed to achieve equilibrium?
November 6, 2012 by Josh G.

Chemistry
Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?
November 18, 2012 by Kervin

Chemistry
Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?
November 18, 2012 by Kervin

Chemistry
Ca(OH)2 has a Ksp of 6.5 x 10^-6. If 0.37 g of Ca(OH)2 is added to 500 mL of water and the mixture is allowed to come to equilibrium, will the solution be saturated?
November 18, 2012 by Kevin

Health 9th grade
A mother breastfeeding her baby is an example of A. active acquired immunity. B. passive natural immunity. C. passive acquired immunity. D. active natural immunity. C is my answer ,but i'm not sure
March 25, 2009 by Terry

chemistry
Hi, The question is, using Henry's law constant calculate the amount of Hydrogen Sulphide gas which could dissolve in 500ml of pure water (H20) placed near an active volcano assuming equilibrium conditions and ignoring any reactions with water. The atmosphere surrounding the ...
April 14, 2010 by Will

Chemistry
What volume of 0.7 molar sodium hydroxide is needed to completely neutralize 90.04 mL of 0.4 molar sulfuric acid?
September 30, 2008 by Trevor

Chem
what effects on Ph and the Ka value does the hydration of an acid have? For example H2SO4 versus H2SO4*H2O
October 23, 2008 by Cole

Gr 10 Chemistry
What is the balanced skeleton equation of Calcium hydroxide+ Phosphoric acid --> Calcium phosphate+ Water
November 9, 2008 by Pie

Chemistry
What would be the whole name of 2-butene and hydroiodic acid. Or the diagram. h h Any help would be greatly appreciated.
November 19, 2008 by George

Chemistry
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
February 23, 2009 by Laura

General Chem
A weak acid has Ka= 1*10^-3. If [HA]= 1.00 M what must be [A-] for the pH to be pH 2.7? My work: pH= Pka + log(B/A) 2.7= 3 + log (B/A) Kw= Ka* Kb 1*10^-14= 1*10^-3 * Kb Kb= 1*10^-11 I don't know how to go about from here
August 9, 2009 by Hina

Chemistry
When 20.0 mL of 0.10 M NaOH are added to 20.0 mL of 0.10 M hypobromous acid, HOBr, what is the hydrogen ion concentration (H^+)? Ka for HOBr is 2 x 10^-9. I get 5 x 10^-4. Is that right?
May 6, 2010 by Mary

Organic Chem
Classify each as a lewis acid or lewis base... A)H20 B)O2- C)Cu2+ D)SO3 E)AlCl3
October 15, 2010 by Adam

Chemistry
Compare & Explain the differences between a lead-acid battery and a dry-cell battery?
November 3, 2010 by sarah

C Chemisty
What mass of hyudrogen peroxide should result when 1.50 g of barium peroxide is reacted with 25.0 mL of 0.50 M of hydrochloric acid?
December 13, 2010 by Sandra

Chemistry
Potency of HCl(l) is 35% (w/w) and density 1.19 g/cm3. Calculate the molarity of the Acid? [Molecular Weight of HCl is 36.5].
January 25, 2011 by Anik

Chemistry
How many grams of water are produced from the reaction of 1L of 2 molarity hydrochloric acid with 1L of 2 Molarity barium hydroxide?
March 23, 2011 by Bruce

chem 100
how many moles of magnesium hydroxide are needed theoretically to neutralize 2.4 moles of hydrochloric acid?
March 27, 2011 by sarah phillips

Please help!
Find the volume of 0.110 M hydrochloric acid necessary to react completely with 1.54 Al(OH)3. Please explain how to do this.
September 28, 2011 by Brittany

chemistry 12
Calculate [H3O+] and [OH-] in 0.18M hydrobromic acid, HOBr(aq), having a K of 2.0x10^-9? I got 9.0x10^-8
October 5, 2011 by Jacob

chemistry
When 50.0 mL of 0.050 M formic acid, HCHO2, is titrated with 0.050 M sodium hydroxide, what is the pH at the equivalence point?
April 11, 2012 by chamy

chem
carbamic acid and ammonia react to form an amide and water. What is the amide product of this reaction.
April 26, 2012 by al

Chemistry 101
75.0 G tartaric acid in 1 liter is what Molarity (moles/liter)? mw=150.087 g/mol
October 15, 2012 by Renee

science
which rna base sequence would produce the animo acid sequence: Valine ALanine
March 11, 2013 by mary

chem 101
75.0 G tartaric acid in 1 liter is what molarity (moles/liter) mw= 150.087g/mol
March 14, 2013 by alain

Chemistry
How many moles of hydrochloric acid are required to react with 2.57 moles of calcium hydroxide in a neutralization reaction?
March 24, 2014 by Anonymous

college chem
What would the [OH-] be after addition of 17.47 mL of 0.1000 M NaOH to 25.00 mL of 0.1000 HA (a weak acid, Ka = 3.16e-4)?
April 5, 2014 by hershi

chemistry
state the chemical formula of phthalic acid and calculate the molar mass using the formula.
September 18, 2014 by marcus

chemistry
How many sigma (σ) bonds and pi (π) bonds are in one molecule of arsenic acid, H3AsO4
May 2, 2015 by nick

Geometry&trigonometry
consider the polar graph =(2/3). (=pie) find the value of N such that r=N, where 0 N has a)no solution b)one solution c)two solution i think i have figured the first question out.since it's no solution then N must be N<(2/3) because the equation is =(2/...
October 24, 2007 by Pauline

chemistry
the reaction between CV+ and -OH, is CV+ lewis acid and OH lewis base
May 11, 2010 by bme1

chemistry
the reaction between CV+ and -OH, is CV+ lewis acid and OH lewis base
May 12, 2010 by bme1

Biochemistry 1
1. a. What is a polyunsaturated fatty acid? b. What are trans-fatty acids?
April 20, 2011 by Mangetty

Chemistry
how can a salt be related to a particular acid and a particular base
December 1, 2012 by Dimitri

Chemistry
how can a salt be related to a particular acid and a particular base
December 1, 2012 by Dimitri

Chemistry-please help
1) Metals that are above hydrogen in the reactivity series react with dilute hydrochloric acid to produce hydrogen gas. Lead is just above hydrogen in the reactivity series.I read a book that says no reaction occurs between lead & dilute acid. Why? Is it because the reaction ...
January 26, 2009 by candy

chemistry
my younger sister has a homework assignment to find out and draw the hazard symbols found on the following.... vinegar milk of magnesia toothpaste pickled onions orange juice washing powder soap lemonade .....we've looked around the house but nothing seems to have the symbols ...
September 25, 2007 by aimee

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

help please:)
Asking questions and drawing conclusions will do which of the following? A. Help you stay alert while reading B. Engage you in active reading. C. Help you remember information. D. All of the above. i got C what do you think?
September 27, 2011 by ciara

writing
Catherine received a 70 on her essay because the vocabulary was basic and there was a lack of clear and active voice. Which of the following areas of her essay were weak? A. Organization B. Mechanics C. Content D. Style
March 28, 2012 by Anonymous

Chemistry
A 10.0-mL solution of 0.30 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) 30.0 mL d) 40.0 mL
May 2, 2011 by Martina

Chemistry 3
How is it possible for me to tell which of these solutes will produce an acidic solution when dissolved in water? LiOH CH3CO2K H2SO3 KOH NaOH NH4NO3 NaOH NaOH can't be the only one... Molecules that produce OH^- when dissolved in water will be basic. Examples:LiOH, KOH, NaOH, ...
May 24, 2007 by Lindsay

Economics*Micro
A market has the following demand and supply equations: Qd = -50P + 1000 Qs = 150P - 400 Which of the following statements is true? a. If the price were $9, a surplus of 300 units would exist and price would tend to fall. b. If the price were $3, a shortage of 800 units would ...
February 14, 2009 by SadBob

mechanics: simple harmonic oscillation
Consider an ideal spring that has an unstretched length ℓ and a spring constant k. Suppose the spring is attached to a mass m that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x_0 from equilibrium and then released with an...
September 3, 2015 by student1618

chemistry
1. when sodium is combined with water, sodium hydroxide and hydrogen gas are produced. How many moles of sodium do you need to make 4.0 mol of hydrogen gas? 2.when aluminium reacts with sulfuric acid, aluminium sulfate and hydrogen gas are produced. How many moes of sulfuric ...
April 29, 2010 by Kelcye

apche,m
what is the density of vinegar? thanks
March 16, 2010 by urgent

apchem
what is the density of vinegar? thanks
March 16, 2010 by urgent

Chemistry
Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system: Addition of NaOH (aq) ...
February 19, 2013 by Anonymous

Biology
Which substance does not leave the nephrons by active transport? a)Potassium ions b)Water c)Calcium ions d)Phosphate ions e)glucose I think its either water or glucose... Another question.. Two strategies- negative feedback and antagonistic hormones- have evolved to maintain a...
March 31, 2011 by Joey

physics
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the ...
September 6, 2010 by Jack

chemistry
A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the ...
September 6, 2010 by Jack

algebra
for the system of inequalities y >= 2x - 1 and y <= 3x - 1, which of the following statements best descibes the ordered pair (1,1) a)The point (1,1) is a solution for y >= 2x - 1, but not y <= 3x - 1. b) The point (1,1) is not a solution for either equation. c)The ...
May 3, 2010 by tim

algebra
for the system of inequalities y >= 2x - 1 and y <= 3x - 1, which of the following statements best descibes the ordered pair (1,1) a)The point (1,1) is a solution for y >= 2x - 1, but not y <= 3x - 1. b) The point (1,1) is not a solution for either equation. c)The ...
May 3, 2010 by tim

Chemistry (solubility product question)
"When 3.00 ml of a 0.00600 M K2CrO4 solution and 3.000 ml of a 0.0100 M Cu(NO3)2 solution are mixed, some solid forms. The mixture is centrifuged and the supernatant is removed. The absorbance of the supernatant, measured at 400 nm in a 1.00 cm cuvette, is 0.286. The ...
April 10, 2015 by Nikki

Chemistry
Could someone check my answers? 1. Why was 95% ethanol alcohol added when titrating aspirin in an experiment? Because it helps the aspirin dry quicker and become pure while the titration is going on. 2. Would the following mistakes cause the calculated percent yield to be ...
March 27, 2007 by Jim

biology
okay im totally lost here, the question i need to answer is explain why codons can't consist of two bases instead of three for each amino acid. im so confused..help!
January 6, 2008 by Kaitlyn

Chemistry
List 4 different ways in which the function of hemoglobin could be changed by a single amino acid substitution. i have no sweet clue... the question is very vague
January 31, 2008 by Jonny

check geo
what has caused the destruction of about 80 percent of polands forests? A)farming collectives B)acid rain C)global warning D)timber harvesting my choice is d
August 30, 2009 by henry

Organic Chemistry
When 2-methyl-2-butene is bubbled into dilute sulfuric acid at room temperature, it appears to dissolve. what new substance has been formed?
March 30, 2010 by Melissa

chemistry
how many liters of hydrogen gas measured at 1.05 atm and negative 25 degrees will be produced when 5.00 grams of magnesium metal is dropped into excess hydrochloric acid?
May 25, 2010 by sss

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