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April 1, 2015

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

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chemistry
how to prepare 1 L of 2.5M nitric acid from 69% of concentrated nitric acid?
Wednesday, April 1, 2015 at 12:07am

chemistry
You find the Ka of your unknown acid is 6.3x10 -5 . If you are being asked to make a buffer at pH 4.00, what is the appropriate ratio of A- to HA to be combined in your flask?
Tuesday, March 31, 2015 at 11:57pm

chemistry
You measure the pH of a 0.50 M unknown acid solution using a pH meter and it is found to be 1.74. What is Ka for the acid? I know ph=-log{H+} Where do I go from here?
Tuesday, March 31, 2015 at 11:48pm

Chemistry physics
3.25x10-3 kg of gold is deposited onto the negative electrode of an electrolytic cell in a period of 2.78 hours, what is the current through this cell in amperes? Assume that the gold ions carry one elementary unit of charge
Tuesday, March 31, 2015 at 11:42pm

chemistry to MathMate
Chemistry - CJ, Tuesday, March 31, 2015 at 10:53pm I am experiencing a major block.... I can't say.... 1micrometer= 1000nm 5micrometer= x..... because I'll get back the same thing So please help me, tell me the answer please.
Tuesday, March 31, 2015 at 10:57pm

physical chemistry
I need to make a solution of 50% ethanol in water (by mass). The partial molar volume of water is 17.0mL/mol and the partial molar volume of ethanol is 52.0mL/mol. What is the density of this solution/
Tuesday, March 31, 2015 at 10:18pm

Chemistry
Write a balanced equation for the combustion of gaseous ethylene (C2H4), an important natural plant hormone, in which it combines with gaseous oxygen to form gaseous carbon dioxide and gaseous water
Tuesday, March 31, 2015 at 9:05pm

chemistry
How many ml of molar sulfuric acid is to be added to 50.0 ml of 0.250 molar sodium hydroxide solution to neutralize it completely . cannot post reaction sorry ..
Tuesday, March 31, 2015 at 8:40pm

Chemistry
56mL of a stock solution of hydrobromic acid, HBr, is added to 85mL of water, yielding a solution having a pH of 1.0. What was the molarity of the stock solution? I know Molarity = moles of solute/ liters of solution
Tuesday, March 31, 2015 at 8:18pm

AP Exams?
I am in AP Chemistry and AP U.S Hisotry and I have planned on taking the tests. So far I have made an A+ in APUSH, but I an B in AP Chem. I've done kinda bad on the tests I've taken in there and I don't think I will do good on the Ap exam. I think I have a better ...
Tuesday, March 31, 2015 at 8:00pm

Chemistry DrBob please answer
A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ). I know that I have to use w=-p deltaV but how do i find the Final and Initial volumes?
Tuesday, March 31, 2015 at 7:35pm

Chemistry
Chemistry - MathMate, Tuesday, March 31, 2015 at 2:56pm 1m = 1000 mm (millimeter) 1 mm = 1000 μm (micrometer) 1 μ = 1000 nm (nanometer) If the tube is 1 nm in diameter, then veryify that 5 μm = 5*1000 nm = 5000 nm = how many diameters? Chemistry - MathMate, ...
Tuesday, March 31, 2015 at 7:26pm

Chemistry
A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ). I know that I have to use w=-p deltaV but how do i find the Final and Initial volumes?
Tuesday, March 31, 2015 at 7:00pm

Chemistry
Calculate the change in entropy (in J/K) when 61.4 g of nitrogen gas is heated at a constant pressure of 1.50 atm from 25.8 ºC to 92.8 ºC. (The molar specific heats are Cv is 20.8 J/(mol-K) and Cp is 29.1 J/(mol-K) .)
Tuesday, March 31, 2015 at 5:58pm

Chemistry
Calculate the change in entropy (in J/K) when 86.4 g of water is heated from 17.5 ºC to 76.5 ºC at 1 atm. (The specific heat is 4.184 J/(g-K).)
Tuesday, March 31, 2015 at 5:57pm

Chemistry
Calculate the increase of entropy (in J/K) when 75 g of ice melts at 0 ºC and 1 atm. (The heat of fusion for ice is 6,000 J/mol.)
Tuesday, March 31, 2015 at 5:57pm

Chemistry
Using the technique of the previous problem ΔE was found to be -2,000.00 kJ/mol of an unknown liquid hydrocarbon at 298 K. In another experiment it was determined that for each mole of hydrocarbon, 4 moles of oxygen gas are consumed and 6 moles of CO2 gas and 6 moles of ...
Tuesday, March 31, 2015 at 5:57pm

Chemistry
1.578 g of an unknown hydrocarbon (110.7 g/mol) burns in bomb calorimeter in excess oxygen. The heat capacity of the calorimeter,Cv, = 5.709 kJ/ºC and ΔT =7.995 ºC. Find ΔE for this hydrocarbon in kJ/mol.
Tuesday, March 31, 2015 at 5:56pm

Chemistry
A reaction at 3.24 atm consumes 5.10 L of a gas adiabatically (q = 0). Calculate the change in internal energy of the system (in kJ).
Tuesday, March 31, 2015 at 5:23pm

Chemistry
A reaction at 2.43 atm produces 20.0 L of a gas and evolves 75.3 kJ of heat (exothermic). Calculate the change in internal energy of the system (in kJ).
Tuesday, March 31, 2015 at 5:23pm

chemistry
If one pound (454g) of hexane combusts how many grams of water are produced? How do u set this up? Start it?
Tuesday, March 31, 2015 at 5:02pm

chemistry
How many grams of CO2 are produced when 11.47 moles hexane combust? Show work please
Tuesday, March 31, 2015 at 5:00pm

Chemistry
Nanotubes are rolled up cylinders of graphite with diameters of about 1nanometer, and lengths in micrometers. (I) If a nanotube is 5 micrometers long, how many diameters does this represent?
Tuesday, March 31, 2015 at 1:29pm

chemistry
How much carbon dioxide measured at 25.0◦C and 821 Torr would be produced by the combustion of 319 g of glucose (C6H12O6)? 1. 40.1 L 2. 20.2 L 3. 241 L 4. 3.37 L
Tuesday, March 31, 2015 at 10:52am

Chemistry
16. From the standard enthalpies of formation, calculate the Horxn for the reaction: (Hof = -151.9 kJ/mol for C6H12.) C6H12(l) + 9 O2(g)  6 CO2 (g) + 6 H2O(l)
Tuesday, March 31, 2015 at 5:37am

chemistry
4.90 gram of KCLO3 is heated. it shows a weight loss of 0.384 gram . what is he percent of original KCLO3 which has decomposed .
Tuesday, March 31, 2015 at 2:24am

Chemistry
A 0.3423 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.000 kg of water contained therein rose from 20.22°C to 22.82°C. The heat capacity of the calorimeter is 2.21 kJ/°C. The heat capacity of water = 4....
Tuesday, March 31, 2015 at 1:40am

Chemistry
What would be the consequence of competing equilibria, such as from other ingredients in an aspirin tablet in a titration lab results? What if there were several pain relievers in the same tablet? How could the error from these interferences be minimized?
Tuesday, March 31, 2015 at 12:05am

chemistry
What is the volume occupied by 20.9g of argon gas at a pressure of 1.09atm and a temperature of 411K ?
Monday, March 30, 2015 at 11:47pm

Chemistry
how many molecules of N2 could fit in a 2.00L soda bottle at 23C and 755mmHg
Monday, March 30, 2015 at 11:01pm

Chemistry
A jar contains 75mL of a .45M silver nitrate solution. Will 200g of solid copper be enough to bring all the silver out of solution as a solid?
Monday, March 30, 2015 at 10:53pm

Chemistry
Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00-g sample is burned, and 2.70 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
Monday, March 30, 2015 at 10:37pm

chemistry
Propane fuel is used in BBQs. Use the following reaction to determine how many moles of oxygen gas are needed to react with 1.6 moles of propane gas. C3H8(g)+5O2(g) --------> 4H2O(g)+ 3CO2(g)
Monday, March 30, 2015 at 10:25pm

chemistry
I'm confused on number 6 on the take home test. in this problem are we going to use the heat capacity of calorimeter is 2.21kJ/c. I'm confused on how to set this problem up 1)I converted 1.000kg in to grams= 1000g 2) I used q=m*c* the change in T 1000g*(4.184J/g* C)*(...
Monday, March 30, 2015 at 10:02pm

chemistry
A chunk of silver has a heat capacity of 42.8 j/°c and a mass of 181 g. Calculate the specific heat of silver
Monday, March 30, 2015 at 9:53pm

Chemistry
Given that Ka for HIO is 3.2 × 10-11 at 25 °C, what is the value of Kb for IO– at 25 °C? Then, Given that Kb for C6H5NH2 is 1.7 × 10-9 at 25 °C, what is the value of Ka for C6H5NH3 at 25 °C? I don't know where to start? Do I need an ICE ...
Monday, March 30, 2015 at 9:41pm

chemistry
is trans-dibromoethene a proper way of labeling an alkene?
Monday, March 30, 2015 at 8:18pm

chemistry
n2+3I2>2NI3 if you have 28g of N2how many grams of NI3 will you be able to make?
Monday, March 30, 2015 at 8:13pm

Chemistry
Calculate the solubility of silver chloride in a solution that is .170M in NH3
Monday, March 30, 2015 at 6:30pm

chemistry
Calculate the pH of the buffer system after the addition of 0.1 mol of gaseous HCl of the solution. Assume that the volume of the solution does not change when the HCl is added.
Monday, March 30, 2015 at 2:52pm

chemistry
how much NaNO3 must be added to saturate 100.0 grams of water at 20 degrees
Monday, March 30, 2015 at 2:26pm

Chemistry
heat of combustion of propane c3h8, 2220KJ/mol. the specific heat of copper is 0.385 J/g*C. How many grams of propane must be burned to raise the temperature of a 10.0kg block of copper from 25.0 C to 65.0 C,assuming none of the heat is lost to the surroundings I'm stuck ...
Monday, March 30, 2015 at 12:14pm

chemistry
What volume of oxygen(in Liters) at 25 degrees C and 1.05 atm is needed to completely combust 2.65L of methane, measured at STP
Monday, March 30, 2015 at 11:50am

chemistry help
What mass of ammonium chloride must be added to a 0.500 L solution of 0.250 M ammonia to make a buffer with a pH of 9.26? Kb (NH3) = 1.8 × 10–5?
Monday, March 30, 2015 at 7:52am

physical chemistry
calculate late the Gibbs free energy, entropy and enthalpy of mixing when 500g of heptane is mixed with 500g oh hexane at 298K.
Monday, March 30, 2015 at 2:49am

AP Chemistry
A 5.0 M solution of HNO3 is titrated with 0.3 M NaOH. Identify the species that have the highest concenttrations in the solution being titrated halfway to the equivalence point. A 25.15 ml of 0.35 m HNO3 was titrated with an unknown concentration of NaOH. The endpoint was ...
Sunday, March 29, 2015 at 11:41pm

chemistry
what would be the final concentration if you incorporate 11m: of 29'' concentration of HF to 800mL of water?
Sunday, March 29, 2015 at 11:19pm

chemistry
Determine the limiting reactant for this reaction if 3.027 grams of Aluminum are reacted with 60.00 mL of a solution that is 6 M KOH. Determine the amount of KAl(SO4)2•12 H2O that can be produced from this reaction. Molar mass Alum = 474 g/mol 2 Al (s) + 2 KOH (aq) + 22 ...
Sunday, March 29, 2015 at 11:03pm

Chemistry
You have 100 mL of a 0.450 M sulfuric acid solution, but you now need to add NaOH to make the solution basic. How much NaOH ( in grams) will you need to add to make the solution have a pH of 13.0? The units are grams of NaOH.
Sunday, March 29, 2015 at 10:39pm

chemistry
What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.
Sunday, March 29, 2015 at 10:38pm

chemistry
calculate the pH after 0.02 mol NaOH is added to 1.00 L of .1 M sodium propanoate NaC3H5O2
Sunday, March 29, 2015 at 8:47pm

Chemistry
a gas is placed in a 3.56L flask at 1.00 atm pressure. If the volume of the flask is reduced by half, what is the new pressure? V-3.56 P-1.00 I don't know what formula to use and how to apply it.
Sunday, March 29, 2015 at 8:19pm

Chemistry
Sulfuric acid dissolves aluminum metal according to the following reaction: 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H​2(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 ...
Sunday, March 29, 2015 at 7:20pm

Chemistry
A helium-filled balloon has a volume of 2.68 L at 15◦C. The volume of the balloon decreases to 2.33 L after it is placed outside on a cold day. What is the outside temperature in K? Answer in units of K.
Sunday, March 29, 2015 at 7:10pm

chemistry
what is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
Sunday, March 29, 2015 at 6:14pm

Chemistry help
A gas occupying 29 mL at standard conditions is heated to 14◦C while the pressure is reduced to 0.98682 atm. What is the new volume occupied by the gas?
Sunday, March 29, 2015 at 6:12pm

Chemistry
For the substance SO2F2(g), ΔHºf = -858 kJ mol-1 and the S-F bond, 308.0 kJ mol-1 Determine the average S=O bond energy in SO2F2 in units of kJ. Is my answer right, if so how do I convert this to kJ? x= S=O bond -858= 2(308) + 2(x) -737kJ/mol
Sunday, March 29, 2015 at 5:20pm

Chemistry
A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2? I know that the formula needed is delta(s)H=-([massH2O*deltaTH20]+[mass(Mg​...
Sunday, March 29, 2015 at 5:10pm

Pre Ap Chemistry
A sample of carbon dioxide gas occupies 566 mL at 0.825 atm and 15 ◦C. What will the pressure be at a volume of 834 mL and a temperature of 20◦C
Sunday, March 29, 2015 at 4:30pm

Chemistry
What pressure is required to reduce 34 mL of a gas at standard conditions to 16 mL at a temperature of 20◦C
Sunday, March 29, 2015 at 3:50pm

Chemistry
What intermolecular forces are responsible for neoprene's stretchiness?
Sunday, March 29, 2015 at 3:39pm

chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm?
Sunday, March 29, 2015 at 3:34pm

chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm?
Sunday, March 29, 2015 at 3:20pm

chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
Sunday, March 29, 2015 at 3:18pm

chemistry
Hydroxyapatite is the main mineral component of bone. How many grams of hydroxyapatite will dissolve in 1.00 L of H2O? Ksp = 2.34 × 10–59; Molar mass = 502.3 g/mol? I keep getting 5.83x10^-18 g but the answer is supposed to be 4.35x10^-5 g. I don't understand why
Sunday, March 29, 2015 at 3:15pm

Chemistry
Hi, can you help me with this question: "you have 25.00 mL of a 0.1000 M sugar solution. How much water must be added to make a 0.025 M solution? Thank you.
Sunday, March 29, 2015 at 1:42pm

Chemistry
calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride
Sunday, March 29, 2015 at 12:36pm

Chemistry
Calculate the percentage yield if, on heating 50g of limestone(CaCO3), 21 g of lime(CaO) were obtained.
Sunday, March 29, 2015 at 12:17pm

chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C at 1 atm
Sunday, March 29, 2015 at 11:44am

chemistry
What is the delta Hvap of a liquid that has a vapor pressure of 612 torr at 77.6 degrees C and a boiling point of 94.9 degrees C
Sunday, March 29, 2015 at 11:20am

Chemistry
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms? I did: 2.46x10^25 Cl atoms x 1 atom/4 atoms x 1 mol/6.02x10^23 x 154 g/1 mol x 1 mL/2.71 g And the correct answer is apparently 572 mL when I got 581 mL.
Sunday, March 29, 2015 at 10:59am

Chemistry
What volume of carbon tetrachloride (density = 2.71 g/mL) contains 2.46x10^25 chlorine atoms?
Sunday, March 29, 2015 at 9:20am

Chemistry
Weight of solution is 1026gm in aqueous solution.what will be the weight of per kg H2O?
Sunday, March 29, 2015 at 5:55am

Chemistry
Molality of aqueous solution of urea is 4.What will be the mole fraction ofH2O?
Sunday, March 29, 2015 at 5:47am

chemistry
PH of gatorade and body sweat
Sunday, March 29, 2015 at 12:05am

Grade 11 Chemistry
Calculate the concentration of I- in an aqueous solution prepared in a 250 ml volumetric flask from 50.0 ml of a 0.840 mol/L aluminum iodide solution and 160.0 ml of a 0.500 mol/L tin(IV) iodide solution.
Saturday, March 28, 2015 at 11:38pm

Grade 11 Chemistry
calculate the molarity of cl- ions in a solution made from mixing 50.0 ml of a 0.100 m/l solution of ferric chloride with 50.0 ml of a 0.500 mol/l solution of ammonium chloride
Saturday, March 28, 2015 at 11:22pm

SUPER HARD CHEMISTRY
a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point
Saturday, March 28, 2015 at 11:08pm

HARD COLLEGE CHEMISTRY
a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?
Saturday, March 28, 2015 at 10:53pm

chemistry
What mass of ammonium chloride must be added to a 0.500 L solution of 0.250 M ammonia to make a buffer with a pH of 9.26? Kb (NH3) = 1.8 × 10–5?
Saturday, March 28, 2015 at 10:21pm

Chemistry
A 1.0-g sample of MgCl2 produced a 10.00C increase in a calorimeter charged with 40.0mL of deionized water. The specific heat is of MgCl2 is 0.750J/C*g. What is the value of delta(s)H for MgCl2? I know that the formula needed is delta(s)H=-([massH2O*deltaTH20]+[mass(Mg​...
Saturday, March 28, 2015 at 10:20pm

COLLEGE CHEMISTRY HARD
calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?
Saturday, March 28, 2015 at 8:08pm

college chemistry HARD
a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?
Saturday, March 28, 2015 at 8:07pm

Chemistry
If 84.1 g of sodium hydroxide are reacted with 51.0 g of aluminum in the following equation: 2NaOH + 2Al + 2H2O --> 2NaAlO2 + 3H2 a) what mass of excess reactant remains? b) what mass of water would react?
Saturday, March 28, 2015 at 6:45pm

chemistry
dissolving 4.022 g of a salt in 100 mL of water changes temperature by -1.2^oC: what is the heat absorbed? The specific heat of water is 4.184 J/(g*C)
Saturday, March 28, 2015 at 6:22pm

chemistry
What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.
Saturday, March 28, 2015 at 6:20pm

chemistry
What is the formula for the following problem What is the kinetic energy, in joules of a mole of oxygen moving at a speed of 225m s ⁻1? Should I use KE= 1/2mv2 Thanks
Saturday, March 28, 2015 at 3:55pm

Chemistry
Use half reaction to balance: CuS + NO3^- = Cu(NO3)2 + NO2 + SO2 S^2- = SO2 S Oxidized Cu^2+ + NO3^- = NO2 + Cu(NO3)2 N Red After balancing the atoms & balancing the charges, I cannot get all the correct coefficients
Saturday, March 28, 2015 at 3:32pm

chemistry
calculate the ph at the equivalence point for the titration of .1 M NH3 and .1 M HCl. kb NH3= 1.8E-5 how you do it?
Saturday, March 28, 2015 at 3:10pm

chemistry
calculate the ph at the equivalence point for the titration of 0.01 M Ch3COOH with 0.1 M NaoH ka= Ch3Cooh 1.8E-5 idek how to do it?
Saturday, March 28, 2015 at 3:04pm

chemistry
calculate the ph at the equivalence point for the titration of .10 M NH3 with 0.10 m HCl kb= NH3 1.8E-5 idek how to do it?
Saturday, March 28, 2015 at 2:42pm

chemistry
a solution containing 100.0 mL of 0.135 M CH3COOH (ka=1.8E-5) is being titrated with 0.54 M NaOH. calculate the ph: at the equivalence point and 5 mL past the equivalence point. how much is 5 mL past? i do not know how to do it?
Saturday, March 28, 2015 at 2:30pm

Chemistry
A 1.500 mol sample of PCL5 dissociates at 160C and 1.00 atm to give 0.203 mol of PCL3 at equilibrium. What is the composition of the final reaction mixture?
Saturday, March 28, 2015 at 1:36am

chemistry
What is the total concentration of cations in a solution made by combining 700.0 mL of 3.0 M (NH4)3PO4 with 300.0 mL of 2.0 M Na2SO4? numbers next to compounds are subscripts
Saturday, March 28, 2015 at 1:09am

chemistry
Calculate the pH of a buffer which contains 0.0500 M pyruvic acid and 0.0450 M sodium pyruvate. (The Ka of pyruvic acid is 4.1 × 10–3)
Friday, March 27, 2015 at 11:36pm

Chemistry 1002
Calculate the standard entropy change for the following reaction at 25 °C. 2 Al (s) + 3 ZnO (s) --> Al2O3 (s) + Zn (s) answer is in J/K mol
Friday, March 27, 2015 at 11:08pm

chemistry
a solution contains 0.216 moles of a base and 0.614 moles of the conjuagte acid in a total volume of 800 mL. The pH of the solution 9.65. what is the value for kb of the base? the answer is 1.27E-4 how do you do it? do you need to convert from moles to molarity idek.
Friday, March 27, 2015 at 6:45pm

chemistry
25 mL 0.4 M KOH will neutralize 10 mL 1.0 M H2SO4 solution. A) True B) False
Friday, March 27, 2015 at 6:27pm

Chemistry
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.220 M sodium benzoate. How much of each solution should be mixed to prepare this buffer? mL of benzoic acid ? mL of sodium benzoate?
Friday, March 27, 2015 at 4:31pm

Chemistry
A buret is partially filled with NaOH solution, to a volume of 1.14mL. A 20-mL sample of 0.1011 M HCl is titrated to a faint pink phenolphthalein endpoint. The final buret buret reading is 22.37mL. What is the molarity of the NaOH solution? Please help. Thank you in advance.
Friday, March 27, 2015 at 4:20pm

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