Friday
September 4, 2015

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

Chemistry
What is the concentration of acid or base remaining after reaction if 21 ml of 0.54 M sulfuric acid is mixed with 39 milliliters of 0.12 M sodium hydroxide?
Tuesday, May 19, 2015 by Annie

chemistry
how many grams of NaOH pallets containing 12% moisture are requiredto prepared 60 ltr of 0.5N solution
Tuesday, May 19, 2015 by shweta

Chemistry
How many grams of AgNO3 will precipitate when 150 mL of 0.5 M AgNo3 adds to 100 ml 0.4 M KCrO4? Please answer immediately.
Monday, May 18, 2015 by who cares about that?

Chemistry
I would like to check my answer to the following question: The permanganate ion oxidizes bromide in acidic conditions to form bromine, manganese(II) ion and water. Give the balanced equation of the reaction. My answer: 3e- + 8H+ (aq) + MnO4- (aq) + 2Br- (aq)  Br2 (aq...
Monday, May 18, 2015 by Kelsy

Chemistry
a bicycle is filled with air to a pressure of 6.80atm and a temperature of 19 degrees celsus. Riding the ike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What is the new pressure in the bicycle ...
Monday, May 18, 2015 by Unathi

algebra 2 and trig
The scores on a chemistry test are normally distributed. Approximately 95 percent of the scores fell between 78 and 92. What is the standard deviation for this distribution?
Monday, May 18, 2015 by caroline

Science (Chemistry)
A chemical system within a sealed 1 L reaction vessel is described by the following reversible reaction equation: 2H2S(g) <---> 2H(g) + S2(g) If the equilibrium constant is 0.000 004 200 at 1103 K find: (a) the reaction quotient intially (b) the order of concentration of...
Monday, May 18, 2015 by Kibito

Chemistry
if 6.5kJ of energy are added to 56.4g sample of iron at 24 degrees C what is the final temperature of the iron? The specific heat of iron is 0.449j/gC
Monday, May 18, 2015 by Lexa

Chemistry
what mass of precipitate will form if a saturated solution of potassium nitrate is dropped from a temperature of 70 degrees celsius to a temperature of 45 degrees celsius?
Monday, May 18, 2015 by Abby

Chemistry
A 10.0mL sample of H2SO4 was neutralized by 13.5mL of 1.0M KOH. What was its molarity of H2SO4? What is the normality?
Monday, May 18, 2015 by Michelle

chemistry
a beaker contains 75.6 grams magnesium oxide (MgO) in 175 ml of solution, calculate the molarity?
Monday, May 18, 2015 by kedron

chemistry
how to prepare 500ml of a 0.75M Sodium Phosphate buffer solution at pH 7.5, how would you go about doing that?
Monday, May 18, 2015 by Jenna

Chemistry-Decay
The lowest level of 14C activity that seems possible for experimental detection is 0.03 dis min−1 g−1 What is the maximum age of an object that can be determined by the carbon-14 method? The initial rate of decay is about dis min−1 g−1. I have no idea ...
Sunday, May 17, 2015 by Alyson

Analytic Chemistry
At 25 °C, you conduct a titration of 15.00 mL of a 0.0260 M AgNO3 solution with a 0.0130 M NaI solution within the following cell: Saturated Calomel Electrode || Titration Solution | Ag (s) For the cell as written, what is the voltage after the addition of the following ...
Sunday, May 17, 2015 by Dasha

chemistry
In which case will the equilibrium constant (K) be less than 1 at 298 K? (a) DeltaH = 4.55 kJ/mol ,deltaS = 28.0 J/mol K (b) delta H = - 4.55 kJ/mol ,deltaS = 28.0 J/mol K (c)deltaH = 4.55 kJ/mol ,deltaS= - 28.0 J/mol K (d) both (a) and (b) I know the answer is c but I don'...
Sunday, May 17, 2015 by Anon

College Chemistry
For the reaction that occurs in the voltaic cell Fe(s)|Fe2+(aq)||Cr3+(aq),Cr2+(aq)|Pt(s) use data from Appendix D in the textbook to answer the following questions: a)Determine the equation for the cell reaction b)Determine E0 cell c)Determine ΔG0 d)Determine K I'm ...
Sunday, May 17, 2015 by Brandon

Chemistry - PLEASE HELP!!!
25g NaOH is dissolved in 10 ml h20 and added to 100 ml volumetric flask. Calculate the concentration in molarity.
Sunday, May 17, 2015 by Marie

Chemistry - Equilibrium
(h) If a catalyst was added to the reaction, which quantities would change? (Select all that apply.) - the potential energy of the products - the potential energy of the reactants - the potential energy of the activated complex -the activation energy for the reverse reaction...
Sunday, May 17, 2015 by Taylor

Chemistry
The approximate concentration of a hydrochloric acid solution is 0.5M. The exact concentration of this solution is to be determined by the titration with 0.5M solution of sodium hydroxide. A 10.00 ml of HCl solution was transferred by pipet to an Erlenmeyer flask. What is the ...
Sunday, May 17, 2015 by Ericka

Chemistry
which of the following is the stongest oxidizing agent? 1.NaBiO3, 2. K2Cr2O7, 3. KMnO4, 4. PbO2
Sunday, May 17, 2015 by ATUL

chemistry
A sample of argon has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 385 K. What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 15.4 atm and 2580C? This problem involves changes in pressure, ...
Saturday, May 16, 2015 by jamie

chemistry help
calculate the PH of a buffered solution of HF and F (Pka of HF is 3.2)
Saturday, May 16, 2015 by Anonymous

chemistry help
Suppose the Cu electrode was replaced by an Al electrode. In order for this new cell to be a galvanic cell, which electrode would be the anode, Zinc or Aluminum?
Saturday, May 16, 2015 by Anonymous

chemistry
CO2 + 3H2 equilibrium CH4 + H2O what is the forward and reverse reaction for it? what are the units of Kc for this reaction?
Saturday, May 16, 2015 by haseeb

Chemistry
2Li + Cu(NO3) > 2LiNO3 + Cu
Friday, May 15, 2015 by Nor

chemistry- Check please
I am given a question where I have to state which combination of electrodes will result in the greatest voltage and which will result in the lowest voltage. The metals given are Zinc, Copper, Silver and Hydrogen I calculated the Ecell for each combination and got the following...
Friday, May 15, 2015 by Sara

chemistry
saline solution mass is 53.0 at 4 degrees equal volume of water, same temp had a mass 51.5g what is the density of the saline solution?
Thursday, May 14, 2015 by kaela

chemistry
The boiling point of diethyl ether, CH3CH2OCH2CH3, is 34.500 °C at 1 atmosphere. Kb(diethyl ether) = 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 13.85 grams of the compound were dissolved in 283.2 grams of diethyl ether...
Thursday, May 14, 2015 by JC

Chemistry
Consider the combustion of ethane: 2C2H6(g)+7O2(g)-->4CO2(g)+6H2O(g) If the ethane is burning at the rate of 0.7 mol/L × s, at what rates are and being produced?
Thursday, May 14, 2015 by Jack

Chemistry
The thiosulfate ion (S2O32-) is oxidized by iodine as follows: 2S2O32-(aq) + I2(aq) → S4O62-(aq) + 2I-(aq) In a certain experiment, 4.41×10-3 mol/L of S2O32- is consumed in the first 11.0 seconds of the reaction. Calculate the rate of production of iodide ion in ...
Thursday, May 14, 2015 by Jack

Chemistry
Can anyone help me with these three questions? Predict the sign of delta S° and then calculate delta S° for each of the following reactions a. 2H2S(g) + SO2(g) --> 3S(rhombic)(s) + 2H2O(g) b. 2SO3(g) --> 2SO2(g) +O2(g) c. Fe2O3(s) + 3H2(g) --> 2Fe(s) + 3H2O(g...
Thursday, May 14, 2015 by Anonymous

Chemistry
For half reactions, is the equilibrium sign used? example: Zn --->Zn^2+ + 2e^- (just arrow) OR Zn <---> Zn^2+ + 2e^- (equilibrium sign)
Thursday, May 14, 2015 by Mike

chemistry: electrochemistry unit
The red wire on a voltmeter is the cathode and the black is the anode. This would also give a positive reading on the voltmeter. How would I explain why this is?
Thursday, May 14, 2015 by Mike

Chemistry
Calculate the mass of Copper(II) Sulfate CuSo4 needed to make 3.00Lof 3.0 M solution?
Wednesday, May 13, 2015 by Angie

chemistry
can you calculate the mass(g) of AL2O3 that is produced when 2.5g of aluminum and 2.5g of oxygen react according to this equation : 4Al(s)+3O2(g)->2Al2O3(s) im not understanding how to do this
Wednesday, May 13, 2015 by leeann

Organic chemistry
What is the product formed when phtalic anhydride reactors with D2O/D+? Thank you in advanced!
Wednesday, May 13, 2015 by Ryan

Chemistry
A 5.00-g sample of octane is burned in a bomb calorimeter containing 2.00x10 exponent2 g H2O. How much energyin calis released if the water temperature increases 6.00 Celsius?
Wednesday, May 13, 2015 by Isis

chemistry
Why does a titrated sample that is fuschia with phenolphthalein turn colorless when the solution is blown into? HINT: Use chemistry and properly balanced chemical equations to support your statement.
Wednesday, May 13, 2015 by Nicole

chemistry
A compound is 52.17 % C, 13.04 % H and 34.78 % O. What is its empirical formula?
Wednesday, May 13, 2015 by Nicole

chemistry
How to calculate sigma and pi bonds in a molecule?Please explain using suitable examples.
Wednesday, May 13, 2015 by gaurav

Chemistry
From your Dilution Data in the procedure 3 and 4, calculate the initial concentration of Fe3+ (aq) ion for tubes 2-5. 1. Add 5.00ml of 1.00 x10^-3 M KSCN to all tubes. 2. To test tube 1 add 5 ml of 0.200M Fe(NO3)3. 3. Measure 8.00ml of 0.200M Fe(NO3)3 into 25.0ml cylinder. ...
Wednesday, May 13, 2015 by Chris

Chemistry
Which has the highest, second highest, third highest, and lowest boiling points? 1.0.20 m MnSO4 2.9.6E-2 m Al2(SO4)3 3.8.4E-2 m Al2(SO4)3 4. 0.45 m Sucrose(nonelectrolyte) [I know it is m times i but not sure how to get "i"]
Wednesday, May 13, 2015 by Jack

Chemistry
What special precautions should be taken when generating hydrogen gas?
Tuesday, May 12, 2015 by Brie

Chemistry Gas Law
How many grams of Mg must react with HCl in order to produce 40.0 ml of hydrogen gas at 22 degrees celsius and 1.02 bar? If the magnesium ribbon weighs 1.83mg/mm, how many mm of the ribbon will you require? Thanks in advance for your help!!
Tuesday, May 12, 2015 by Ryan

Chemistry-check answer please
I am given a question where I have to state which combination of electrodes will result in the greatest voltage and which will result in the lowest voltage. The metals given are Zinc, Copper, Silver and Hydrogen I think that silver and copper would give the greatest voltage ...
Tuesday, May 12, 2015 by Sara

Chemistry
When 821 J of heat is added to 3.6 g of an oil at 21 °C, the temperature rises to 85 °C. What is the specific heat (cp) of the oil in J/(g°C)?
Tuesday, May 12, 2015 by Jake

analytical chemistry
In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?
Tuesday, May 12, 2015 by Lily

Chemistry
Determine the pH of a buffer made from 250 ml of 0.50M HF and 150 ml of 0.75 M NaF.
Tuesday, May 12, 2015 by Sara

chemistry
how to balance this partial equation given below k2cr2o7+h2so4+kI-->k2so4+cr2(so4)3+h2​o+I2
Tuesday, May 12, 2015 by xyz

chemistry
how to balance this partial equation given below k2cr2o7+h2so4+kI-->k2so4+cr2(so4)3+h2​o+I2
Tuesday, May 12, 2015 by xyz

Chemistry
How would I find the pH of 0.25 M carbonic acid? also the pH for 0.075 M CN^-?
Tuesday, May 12, 2015 by Sara

Chemistry
I need to calculate the amount of NaH2PO4 (in grams) and 1.00M NaOH solution (in ml) needed to make 250 ml of 0.20M H2PO4- at pH 8.00. My work is lengthy and involved but the answer I got was 7.00 ml of the NaOH and 0.0070 moles of the NaH2PO4 needed. Can you tell me if I am ...
Tuesday, May 12, 2015 by Kelsy

Chemistry
Determine the molar solubility of Y for XY2 if Ksp is 2.2x10^-4. The 2 in Xy2 is a subscript. I found the Ksp equation which is ksp=[x^2+][Y^-]^2 Then I did the ICE table and got x and 2x for the equilibrium concentrations. Then I did: 2.2x10^-4=(x)(2x)^2 I solved for x and ...
Tuesday, May 12, 2015 by Sara

Chemistry
Determine Ksp if the equilibrium concentration of X is 0.02 M and Y is 0.05 M given that X2Y(s)<-->2X^+(aq)+Y^(2-)(aq). The 2 in X2Y is a subscript.
Tuesday, May 12, 2015 by Sara

Chemistry
I need to calculate the amount of NaH2PO4 (in grams) and 1.00M NaOH solution (in ml) needed to make 250 ml of 0.20M H2PO4- at pH 8.00. My work is lengthy and involved but the answer I got was 7.00 ml of the NaOH and 0.0070 moles of the NaH2PO4 needed. Can you tell me if I am ...
Tuesday, May 12, 2015 by Kelsy

Chemistry
Determine Qsp if 8.7 ml of 2.1 M AgNO3 is added to 1.7 ml of 1.5 M CaCl2 .The Ksp of AgCl is 1.77 x 10^-10.
Tuesday, May 12, 2015 by Sara

Chemistry
Iron -59 has a half life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that a new sample of iron? Show all calculations leading to a solution. Can you work the problem? I don't know how to solve for t!!! Please.
Monday, May 11, 2015 by noemi/

chemistry B-11
A sample of gas in a 10.0-L container exerts a pressure of 565 mm Hg. Calculate the pressure exerted by thrvgas if he volume is changed to 15.0 L at constant temperature.
Monday, May 11, 2015 by Roxana Ramirez

Chemistry
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. If 50.0 mL of hydrogen gas is produced at STP, what is the mass of potassium that reacted? 2K(s) + 2 H2O (l) -> 2 KOH (aq) + H2(g)
Monday, May 11, 2015 by BR

Chemistry
The reaction N2(g)+3H2(g)<-->2NH3(g) begins with 1.15 M N2 and 1.36 M H2. At equilibrium the concentration of NH3 is 0.78 M. Determine the extent of reaction.
Monday, May 11, 2015 by Sara

Chemistry
I dont know how to do Titration problems! I have an emergency homework assignment thats crucial to my grade! Please help with tips and step by step response! Please help!- 1. 50ml of 0.3 M KOH are required to titrate 60 ml of H^2SO^4. What is the M of the H^2SO^4? 2. 60 ml of ...
Monday, May 11, 2015 by Kristen

chemistry
If 5.40 kcal of heat is added to 1.00 kg of water at 100⁰C, how much steam at 100⁰C is produced? Show all calculations leading to an answer. Is this how you would do this? Q= m*Hvap Q= m* 5.40 Q=100*5.40 Steam = 540 kg of steam?
Monday, May 11, 2015 by Student101

chemistry
Iron-59 has a half-life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Show all calculations leading to a solution. Is this how you would do this? (100/25) = 0.693 times (45.1) 4= 31.2543 final answer is 7.8136
Monday, May 11, 2015 by Student101

chemistry 20
A student mixed a solution of aqueous calcium chloride with an aqueous solution of magnesium sulphate. A precipitate formed. 1) Write the balance chemical equation for the reaction including states of matter. Ensure you write the reactants as a dissociated ions. 2) Based on ...
Monday, May 11, 2015 by amber

Chemistry 20
Hydrogen cyanide gas is produced industrially by the reaction 2 CH4(g) + 3 O2(g) + 2 NH3(g) → 2 HCN(g) + 6 H2O(g) What volume of O2(g) is needed to completely react 17 L of CH4(g) at STP?
Monday, May 11, 2015 by Michelle

chemistry
A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. What was the identity of the original nucleus? Show the nuclear equation that leads you to this answer. 13 X 28 --> 11 Na 24 + 2 He 4 look at the periodic table for atomic number 13 --- that is ...
Monday, May 11, 2015 by Student101

chemistry
Can methane and oxygen be separated. If yes, can anyone please mention the method
Monday, May 11, 2015 by daniel

chemistry
You are operating an X-ray tube with a molybdenum (Mo) target by applying an acceleration potential of 50 keV. Calculate the values of two characteristic wavelengths, λKα and λSWL. Express your answers in meters.
Sunday, May 10, 2015 by ocre

chemistry
The charge carrier concentration of GaAs at 100oC is 1.048*1011 cm-3. The charge carrier concentration at 280°C is 1.841*1017 cm-3. What is the bandgap of GaAs? Give answer in eV.
Sunday, May 10, 2015 by ocre

chemistry
A current of 8.959 milliamps (10-3 A) is measured flowing through a tungsten wire of diameter 0.1 mm and 9 cm long when 1.7 mV is applied. What is the resistivity of tungsten? Express your answer in ohm-m.
Sunday, May 10, 2015 by ocre

Chemistry
I need to figure out whether NaNO3 is saturated, unsaturated, or supersaturated in a 3 molal solution at 40 degrees Celsius. I am completely stuck right now, and am not sure where to go with this.
Sunday, May 10, 2015 by anonymous

Chemistry
How much water must be added to make 500 ml of 12.0 M HCl to 1.0 M HCl (500mL• 12M) / 1.0M =6000m Is this correct?
Sunday, May 10, 2015 by Carl

Organic Chemistry
any o-chemists out there? Some help would be greatly appreciated. So I have this compound, it has 5 C's total, a bromine at one end and 2 methyl groups coming off the 3rd C from the bromine and an OH group at the end. like this: Br-CH2-CH(CH3)2-CH2OH. Now I have to come up...
Sunday, May 10, 2015 by paul

Chemistry
How do I calculate the molality of a saturated solution of KCl at 70 degrees Celsius? I have gotten the moles of KCl (.66) but am not sure where to go from there.
Sunday, May 10, 2015 by Mathieu

chemistry
What salt results from the neutralization of phosphoric acid with potassium hydroxide? Would you set up an equation here?
Sunday, May 10, 2015 by Student101

chemistry
what is the solubility in grams of KCL3(s) per 100 ml of water?
Sunday, May 10, 2015 by Anonymous

chemistry
calculate the solubility in grams of KCL3(s) per 100 ml of water
Sunday, May 10, 2015 by emily

Chemistry
A 94 mL vanillin solution with a concentration of 0.017 mol L-1 was made by extraction from 24.41 g of vanilla pods. Calculate the percentage of vanillin in the vanilla pods. It would be helpful if you could explain to me the process to work out this question instead of just ...
Sunday, May 10, 2015 by Jessica

Chemistry (Acids and Bases)
What is the pH of a 0.400 molar HCl solution? I did -log(.4)=.398. That seems too low. I think I need to find the molarity (M) of the solution, but I can't find it with the given information.
Sunday, May 10, 2015 by Mark

chemistry
estimate the boiling point of Pcl3
Sunday, May 10, 2015 by Anonymous

chemistry dont know how to do it
dG for the formation of Hi(g) from its gaseous elements is -20.2 kj/mol at 500k. when the partial pressure of HI is 10 atm, and I2 0.001 atm, what must the partial pressure of hydrogen be at this temperature to reduce the magnitude of dG for the reaction to 0. H2(g)+I2(g)----&...
Sunday, May 10, 2015 by Anonymous

chemistry
Iron-59 has a half-life of 45.1 days. How old is an iron nail if the Fe-59 content is 25% that of a new sample of iron? Show all calculations leading to a solution. I am really confused on how to find t here? Can someone help? I can set up the rest of the equation
Sunday, May 10, 2015 by Student101

Chemistry
My teacher is an idiot and wont teach our class and im panicking so please help anyone. Given the following equations enthalpy values, determine the heat of reaction (kj) at 298k for the reaction: B2H6(g)+6Cl(g)=2BCl3(g)+6HCl(g)
Sunday, May 10, 2015 by Kevin

chemistry
Higher to noise ratios can be achieved in FTIR spectra compared to spectra from dispersive IR instruments. How is such a useful feat achieved in FTIR
Sunday, May 10, 2015 by Emily

analytical chemistry
DrBob222, it is me again. Continue the question 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, ...
Sunday, May 10, 2015 by katy

chemistry
In generating the synchronous spectrum, it is not necessary to specify the wavelength range, why?
Sunday, May 10, 2015 by Emma

Chemistry
A mixture of powdered carbon and an oxide of lead was heated producing lead metal and carbon dioxide.when 13.70g of the lead oxide was reduced to lead by carbon,960cm^3 of carbon dioxide measured at r.t.p was formed. Calculate the empirical formular of the lead oxide???
Sunday, May 10, 2015 by Newton

Chemistry
A student was asked to prepare a sample of copper(ii)sulphate crystals(CUSO4.5H2O) given 5g of of copper (ii)oxide (CUO) as the starting material.if 10g of dry crystals of CUSO4.5H2O were obtained,calculate the percentage yield???
Sunday, May 10, 2015 by Newton

chemistry
describe the detector used to acquire UV-Vis Spectra in the entire UV-Visible spectral range at the same instant (ie. not sequential scanning of wavelengths) HELP PLEASE It is due monday :((
Sunday, May 10, 2015 by briam

Chemistry
A Balanced equation to represent the reaction between 1-pentanol and ethanoic acid. (Production of an ester)
Sunday, May 10, 2015 by Shantel

ap chemistry
is this positive or negative entropy? devitrication of glass desalination of water hard of boiling of a egg
Saturday, May 9, 2015 by Anonymous

chemistry
Hydrochloric acid(75.0 ml of 0.250 M) is added to 225.0 ml of 0.0550 M Barium hydroxide solution. What is the concentration of the excess H+ or OH- ions left in this solution?
Saturday, May 9, 2015 by Neriah

chemistry
under what conditions could the decomposition of Ag2O(s) into Ag(s) and O2(g) proceed spontaneously at 298 K? 2Ag2O(s)---->4Ag(s)+O2(g) dG=22.42 Kj answer= 0.000118 atm.
Saturday, May 9, 2015 by thomas

chemistry
dG for the formation of Hi(g) from its gaseous elements is -20.2 kj/mol at 500k. when the partial pressure of HI is 10 atm, and I2 0.001 atm, what must the partial pressure of hydrogen be at this temperature to reduce the magnitude of dG for the reaction to 0. H2(g)+I2(g)----&...
Saturday, May 9, 2015 by thomas

Chemistry - Acids/Bases
What kinds of compounds are typically strong bases? (More than one may apply.) *hydroxides of group IIIA (13) metals *conjugate bases of strong acids *hydroxides of group IA (1) metals *hydroxides of transition metals *hydroxides of group IIA (2) metals All I know about strong...
Saturday, May 9, 2015 by Leah

chemistry
How much heat energy, in kilojoules, is required to convert 37.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?
Saturday, May 9, 2015 by liz

college chemistry
at its melting point, O c, the enthalpy of fusion of water is 1.435 kcal/mol. what is the molar entropy change for the melting ice at 0C? answer: 5.26 cal/mol-k
Saturday, May 9, 2015 by thomas

college chemistry
for the reaction at 298 K 2A+b ---->C enthalpy=100 K/cal entropy= 0.050 kcal/k assuming enthalpy and entropy to be constant over the temperature range, at what temperature will the reaction become spontaneous? answer: T>2000K
Saturday, May 9, 2015 by thomas

college chemistry
estimate the normal boiling point of Pcl3 answer: 333 K how do you get it?
Saturday, May 9, 2015 by thomas

chemistry
how to make a buffer with 25 drops of 1.0 M acetic acid and 10 to 25 drops of sodium acetate
Saturday, May 9, 2015 by Cortney

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