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September 20, 2014

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

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Chemistry
This compound is mescaline, a hallucinogen. Which of the following statements is true? Mescaline is an amine. Mescaline contains an alcohol group. Mescaline is a carboxylic acid. Mescaline is an amine and contains an alcohol group.
Tuesday, March 18, 2014 at 11:16pm

Chemistry
220 J to kilojoules 350 kj to calories 97.0 kcal to joules 35.0 cal to kilocalories How do I convert them?
Tuesday, March 18, 2014 at 11:02pm

Chemistry
For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4Cr(s)+3O2(g)→2Cr2O3(s) 1.) 1 molCr; 1 molO2 2.) 4 molCr; 2.5 molO2 3.) 12 molCr; 10 molO2 4.) 14.8 molCr; 10.3 molO2 Express your answer as a chemical formula. I&#...
Tuesday, March 18, 2014 at 10:56pm

Chemistry
Hello! I'm doing these questions for my chemistry homework, and I can only figure out the first one, I don't know how to do the rest, I'm completely stuck! Please help!! Thank you! 1.) For the reaction, calculate how many grams of the product form when 18.4g of Ca ...
Tuesday, March 18, 2014 at 10:55pm

chemistry
Sometimes the basicity of a solution is reported using pOH (pOH = -log[OH-]). What is the a. [OH-] if pOH = 1.90 b. [H3O+] if pOH = 12.94 c. pH if pOH = 9.70
Tuesday, March 18, 2014 at 10:42pm

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.
Tuesday, March 18, 2014 at 10:39pm

chemistry
C6O2H8, Ka = 1.7 x 10-5 calculate pka
Tuesday, March 18, 2014 at 10:36pm

Chemistry
What is the concentration of H3O+ in a solution with the following pH values. Enter your answer in scientific notation. a. 6.66 b. 13.40 c. 13.17 d. 2.39
Tuesday, March 18, 2014 at 10:15pm

Chemistry
Suppose you tried to carry out a double replacement reaction by mixing equal voulumes of a solution that contains dissolved NAOH and a solution that contains dissolved NACL. WHat would you expect to happen when the two solutions were mixed? Expain?
Tuesday, March 18, 2014 at 10:12pm

General Chemistry
Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0290 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate?What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective precipitation?
Tuesday, March 18, 2014 at 10:07pm

chemistry
what type of bonding is phosphoric acid?
Tuesday, March 18, 2014 at 9:49pm

chemistry
in which of the following pairs of compiunds are both members of the pair ionic compounds? a) PI3 and HBr, b) H2S and NCl3, c)LiF and H2O, d)LiI and NiO
Tuesday, March 18, 2014 at 9:42pm

Chemistry
The Ksp of tin(II) hydroxide, Sn(OH)2, is 5.45 × 10-27. Calculate the solubility of this compound in g/L.
Tuesday, March 18, 2014 at 9:23pm

Chemistry
What does each electron outside of a nucleus occupy?
Tuesday, March 18, 2014 at 6:17pm

Chemistry
What is the enthalpy change if 25.0 g of methane are burned? 890kJ of heat released for every mole of methane that reacts. CH4 + 2O2 = CO2 + 2H2O
Tuesday, March 18, 2014 at 5:31pm

Science/Chemistry
Is this equation balanced? Does it show that no atoms are lost or gained in chemical reactions? 8Fe + S8 --->8FeS
Tuesday, March 18, 2014 at 4:53pm

CHEMISTRY
The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M t (min) Abs ...
Tuesday, March 18, 2014 at 4:23pm

chemistry
In the following reaction, how many liters of oxygen produce 560 liters of carbon dioxide in the oxidation of methane, given that both gases are at STP? CH4 + 2O2 ¨ CO2 + 2H2O
Tuesday, March 18, 2014 at 4:07pm

Chemistry
Consider the following hypothetical nuclear breakdown: Fermium-258 (Fm-258) loses three alpha particles and two neutrons. What is the new element that is formed (in terms of chemical symbol, atomic number and atomic mass)? I'm not sure how to express this in equation form...
Tuesday, March 18, 2014 at 3:00pm

Chemistry
A reaction has a standard free-energy change of –10.30 kJ mol–1 (–2.462 kcal mol–1). Calculate the equilibrium constant at 25ºC.? This is what I've done so far.. ∆Gº= -2.3 RT + log (K) -10.31 kJ = -2.3 (.0083145)(298) + log K -10.31 kJ...
Tuesday, March 18, 2014 at 2:52pm

Chemistry
It is commonly known that freshly cut fruits turn a brownish color when exposed to the air for a number of minutes. This is due to the action of the enzyme polyphenoloxidase. It is also well known that the formation of the brown color can be prevented or slowed by chilling the...
Tuesday, March 18, 2014 at 1:38pm

Chemistry
a 2.500 g sample of a pure compound was analysed and found to contain 1.094 g of nitrogen.determine whether the compound is either NH4NO3 or NH4NO2 .show all by calculations.
Tuesday, March 18, 2014 at 1:22pm

Chemistry
1. Calculate the mass of each compound required to make 25mL of the following solutions: (a) 0.10 M Ni(NO3)2 • 6H2O (b) 1.0 M NaClO4 • H2O (c) 0.11 M trien (C6H18N4) 2. Calculate the concentrations of Ni2+ and trien in a solution prepared by mixing equal volumes of ...
Tuesday, March 18, 2014 at 11:14am

Chemistry
Oxygen gas, from the decomposition of KClO3, was collected by water displacement. The pressure and temperature in the lab during the experiment were 451.0 torr and 20.0 C. What was the partial pressure of oxygen?
Tuesday, March 18, 2014 at 11:06am

chemistry
Calculate the pH of a buffer system composed of 0.880 M C5H5N and 0.660 M C5H5NHNO3. The Kb for C5H5N is 1.70 x 10^-9.
Tuesday, March 18, 2014 at 10:41am

Chemistry
A 10.00 gram solid sample consisting of a mixture of sodium chloride and potassium sulfate is dissolved in 100.0 mL of water is combined with another 200.0 mL solution that contains excess aqueous lead(II) nitrate. Upon mixing the two solutions, a solid precipitate forms (it ...
Tuesday, March 18, 2014 at 10:21am

Chemistry
what would be the molality of a solution if 71g of Cl2 were added to 400 mL of acetone (D=0.788 g/mL)
Tuesday, March 18, 2014 at 10:21am

Chemistry
2NaN3(s) -> 2Na(s) + 3N2(g) What mass of sodium azide should be loaded in the device to ensure full inflation of the same air bag if the actual reaction can be expected to proceed to give only 83% yield of nitrogen gas?
Tuesday, March 18, 2014 at 10:20am

chemistry
2C3H6(g) + 2NH3(g) + 3O2(g) -> 2C3H3N(g) + 6H2O(g) A 150.0 liter steel reactor at 25 ºC is filled with the following partial pressures of reactants: 0.500 MPa C3H6, 0.800 MPa ammonia, and 1.500 MPa oxygen gas. If the reaction proceeds to 90% yield, and no side ...
Tuesday, March 18, 2014 at 10:19am

chemistry
Balanced equation of the reaction that occurs when the butane in cigarette lighters burns in the presence of enough oxygen
Tuesday, March 18, 2014 at 6:25am

Chemistry
How would you start these problems? ...I suppose this is a continuation from this post: (replace the numbers with id=1395127807) But, I have yet figured out the ΔH ̊ and ΔS ̊ . But once that is figured out, how would I start problem #1? Also, for problem #2...
Tuesday, March 18, 2014 at 3:40am

Chemistry
Determination of Ksp, ΔG°, ΔH° and ΔS° for Ca(OH)2. *** Need help on problem #3 & #4 *** CALCULATIONS: 1. Calculate the average solubility of calcium hydroxide, Ca(OH)2, at each temperature. 2. Calculate the Ksp for Ca(OH)2 at each temperature. 3. ...
Tuesday, March 18, 2014 at 3:30am

Chemistry Check Please!!!
Using a table of standard electrode potentials (as in Appendix M of your text), calculate the standard cell potential, Eo, for: 2 Fe2+(aq) + Cl2(g) 2 Fe3+(aq) + 2 Cl(aq). Answer: Anode: 2 Fe2+ 2 Fe3+ + 2 e Eox = 0.771 V Cathode: Cl2 + 2 e 2 Cl Ered = +1.36 V Enet = +0.59 V
Monday, March 17, 2014 at 11:39pm

chemistry
Combustion analysis of a hydrocarbon produced 33.01 g {\rm CO}_2 and 27.04 g {\rm H}_2{\rm O}. Calculate the empirical formula of the hydrocarbon. Express your answer as a chemical formula.
Monday, March 17, 2014 at 11:14pm

Chemistry
find the freezing point of a solution containing 3 grams of a compound of molar mass 125 g/mol in 45 g of camphor
Monday, March 17, 2014 at 8:12pm

Chemistry
If 0.75 g of a gas dissolves in 1.0 L of water at 20.0 kPa of pressure, how much will dissolve at 105.4 kPa of pressure?
Monday, March 17, 2014 at 7:41pm

chemistry
8.22 g of CuNO3 is dissolved in water to make a 0.590M solution,what is the volume of the solution
Monday, March 17, 2014 at 6:48pm

Chemistry
Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given: CaCl2(s)+6H2O(l)->CaCl2* 6H2O(s) delta H = -97.0 kj what is the heat of solution of anhydrous CaCl2 in a large volume of water?
Monday, March 17, 2014 at 4:43pm

Chemistry
Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given: CaCl2(s)+6H2O(l)->CaCl2* 6H2O(s) delta H = -97.0 kj what is the heat of solution of anhydrous CaCl2 in a large volume of water?
Monday, March 17, 2014 at 4:43pm

Chemistry
What is the percent KCL by mass in a 3.00 molal solution?
Monday, March 17, 2014 at 4:37pm

chemistry
The Henry's law constant for CO2 at 20°C is 3.7*10^-2 M/atm. What mass of CO2 (in grams) is present in 355 mL of soda drink if the pressure of CO2 in the can is 2.5 atmospheres at 20°C? (Assume the solubility of CO2 in the soda is the same as water)
Monday, March 17, 2014 at 3:55pm

Chemistry HELP URGENT PLEASE!!!
what current (in amperes) is required to plate out 2.85 g of Cr from a Cr^3+ solution in a period of 2.50 hr?
Monday, March 17, 2014 at 3:23pm

Chemistry Help Please
Each of the following statements is false. Rewrite each so that it makes a correct statement about free energy. a. ΔGuniverse > 0 for any spontaneous process. b. ΔH = ΔG TΔS.
Monday, March 17, 2014 at 2:45pm

chemistry
Determine the specific heat of a material if a 27.3 g sample absorbed 44.2 J as it was heated from 293 K to 336 K.
Monday, March 17, 2014 at 2:14pm

chemistry
A laboratory instructor gives you a test tube containing Ag+ ,Ba 2+ , and Cu 2+ ions. Devise a reaction scheme that would allow you to selectively precipitate each of these ions. Write a balanced net ionic equation for each precipitation reaction.
Monday, March 17, 2014 at 1:50pm

chemistry
How many grams of CL2 are needed to produce 7.20 moles of chloroform?
Monday, March 17, 2014 at 11:26am

chemistry
How many grams of CL2 are needed to produce 7.20 moles of chloroform?
Monday, March 17, 2014 at 11:26am

chemistry
34.0g of NaOH in 500.mL of NaOH solution
Monday, March 17, 2014 at 1:47am

Chemistry
Gold can be recovered from sea water by re- acting the water with zinc, which is refined from zinc oxide. 2 ZnO(s) + C(s) −→ 2 Zn(s) + CO2(g) 2 Au3+(aq) + 3 Zn(s) −→3 Zn2+(aq) + 2 Au(s) The zinc displaces the gold in the water. What mass of gold can be ...
Sunday, March 16, 2014 at 11:55pm

CHEMISTRY
A voltaic cell is constructed that uses the following reaction and operates at 298 K: 2 Al(s) + 3 Mn^2+(aq) 2 Al^3+(aq) + 3 Mn(s). What is the potential, E, of this cell when [Mn^2+] = 0.10 M and [Al^3+] = 1.5 M?
Sunday, March 16, 2014 at 11:27pm

Chemistry Help Please
Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!
Sunday, March 16, 2014 at 11:21pm

Chemistry Help Please
Each of the following statements is false. Rewrite each so that it makes a correct statement about free energy. a. ΔGuniverse > 0 for any spontaneous process. b. ΔH = ΔG TΔS.
Sunday, March 16, 2014 at 11:18pm

Chemistry
I have discovered a new chemical compound with the formula A2B. If a saturated solution of A2B has a concentration of 4.35x10-4M. a) What is the concentration of B2- ions? b. What is the concentration of A1+ ions? c. What is the solubility product constant for A2B? Can you ...
Sunday, March 16, 2014 at 8:31pm

chemistry
Upon decomposition, one sample of magnesium fluoride produced 1.95 kg of magnesium and 3.05 kg of fluorine. A second sample produced 1.10 kg of magnesium.
Sunday, March 16, 2014 at 8:00pm

Chemistry
What is the percent by volume concentration of a solution containing 300.mL of isopropyl alcohol and enough water to give 400.ml of solution?Which component is the solute and which is the solvent?
Sunday, March 16, 2014 at 6:20pm

Chemistry
What is the molarity of an aqueous solution that is 6.44% glucose (C6H12O6) by mass? (Assume a density of 1.03 g/mL for the solution.)
Sunday, March 16, 2014 at 5:46pm

Chemistry 151
5) How many mL of 1M HCl is used to make the following dilutions? a) 100mL of 0.1M HCl = b) 250mL of 0.5M HCl= c) 10ml of 0.01M HCl= 36.64 is the molar mass of hcl do I divide that into ml?
Sunday, March 16, 2014 at 5:18pm

Chemistry
Find the molarity of 0.02g of silver nitrate dissolved in 1kg of water
Sunday, March 16, 2014 at 4:44pm

Chemistry
2) Given the balanced reaction equation predict the moles of each product given the following reactants: AlCl3 + 3 NaHCO3 Al(OH)3 + 3 NaCl + 3 CO2 AlCl3 NaHCO3 Al(OH)3 NaCl 58.4 CO2 a 1 mol 1 mol ? ? b 1 mol 3 mol ? ? c 3 mol 1 mol ? ?
Sunday, March 16, 2014 at 3:53pm

Chemistry
2 NaOH + CuSO4  Na2SO4 + Cu(OH)2 100g of Cu(OH)2 is needed. Assuming 100% yield, how much of 1M NaOH and 0.5M CuSO4 must be used in mL?
Sunday, March 16, 2014 at 3:44pm

Chemistry
This is a problem I got on my Mastering Chemistry homework: Consider the following reaction: H2(g)+I2(g)⇌2HI(g) A reaction mixture at equilibrium at 175 K contains PH2=0.958atm, PI2=0.877atm, and PHI=0.020atm. A second reaction mixture, also at 175 K, contains PH2=PI2= 0...
Sunday, March 16, 2014 at 3:42pm

chemistry
The specific heat of ethanol is 0.59 cal/g Celsius If one adds 450 cal of heat to 37 g of ethanol at 20 celsius what would the final temp be
Sunday, March 16, 2014 at 1:44pm

Chemistry
The net reaction for fusion on a star like our Sun is: 4H(1,1) ==> He(4,2) + 2e(0,+1) Calculate the mass defect for this reaction. If one atom of He is formed this way, calculate the energy released. If one Kg of He is formed, calculate the energy released. The masses of ...
Sunday, March 16, 2014 at 12:07pm

Chemistry
When the rate of the reaction 2NO+O2=2NO2 was studied, the rate was found to double when the O2 concentration alone was doubled but to quadruple when the NO concentration alone was doubled. Which of the following mechanisms accounts for these observations? a.) Step 1: NO + O2=...
Sunday, March 16, 2014 at 11:45am

Chemistry
Determine the rate constant for the following second-order reaction: A=C+2D given that the initial concentration of A is .3 M and that the concentration of C increase to .01 M in 200 seconds. Express the result in terms of the rate law for the loss of A.
Sunday, March 16, 2014 at 11:44am

chemistry
calculate the molarity of the solution prepared by dissolving 16.45g NH4NO3 in water to make 250.mL solution.
Sunday, March 16, 2014 at 8:39am

Chemistry
Alternative answers: A)10 B)13 C)1.9 D)3.8 E)12
Sunday, March 16, 2014 at 6:10am

Chemistry (titrations)
15.00 mL of 0.01200 M EDTA were used to titrate 50 mL aliquot solution containing iron (II). How much iron (II) is present in the solution? The answer in the book is 201 ppm. I tried getting the moles of EDTA (n,EDTA = 1.8 x 10^-4 mol). I think they're in 1:1 ratio, or I ...
Saturday, March 15, 2014 at 10:59pm

Chemistry
Calculate the amount of energy released per gram of nuclei when 2 protium nuclei react to form deuterium nucleus (protium = 1.00782 amu, deuterium = 2.01410 amu). The answer in the book is -2.0 x 10^10 J, but I don't have any idea on how to do this. Please help, and thank ...
Saturday, March 15, 2014 at 10:39pm

chemistry
Assuming that the volumes of carbon diox- ide and of propane are measured under the same experimental conditions, what volume of carbon dioxide is produced by the complete combustion of 20 L of propane? i just dont understand
Saturday, March 15, 2014 at 9:38pm

chemistry
The distance versus time plot for a particular object shows a quadratic relationship. Which column of distance data is possible for this situation?
Saturday, March 15, 2014 at 8:11pm

chemistry
Calculate the pH for the hydrogen half-cell of the following voltaic cell if the observed cell voltage is 1.00 V. Mn|Mn2+(1.00 M)||H+(pH =?), H2(1.00 atm)|Pt
Saturday, March 15, 2014 at 5:43pm

chemistry
Determine the volume of 1.2 mol/L HCl that will be required to neutralize 150 mL of 0.080 mol/L Ba(OH)2
Saturday, March 15, 2014 at 3:50am

chemistry
3. a) Calculate the pH of the buffer solution prepared by mixing 40.0 mL of 0.100 M H3PO4 and 60.0 mL of 0.100 M KH2PO4. Given the pKa of H3PO4 is 2.12.
Saturday, March 15, 2014 at 12:01am

Science (Chemistry)
. Complete all the following for the reaction (NH4)2S + Cd(NO3)2 --> CdS(s) + NH4NO3 1. Balance this equation 2. Write the ionic equation 3. Write the net ionic equation
Friday, March 14, 2014 at 10:00pm

Chemistry
I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question? Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH...
Friday, March 14, 2014 at 9:54pm

chemistry 101
How many grams of bromine are in 1.57 grams of phosphorus tribromide?
Friday, March 14, 2014 at 8:18pm

Chemistry, please help!!!
I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question? Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH...
Friday, March 14, 2014 at 6:34pm

Chemistry
Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH)3) d.) copper (Cu)
Friday, March 14, 2014 at 5:10pm

Chemistry
When the rate of the reaction 2NO+O2=2NO2 was studied, the rate was found to double when the O2 concentration alone was doubled but to quadruple when the NO concentration alone was doubled. Which of the following mechanisms accounts for these observations? a.) Step 1: NO + O2=...
Friday, March 14, 2014 at 3:10pm

Chemistry
In a bomb calorimeter, a 6.50 g sample of octane (C8H18) is combusted. The combustion enthalpy for octane is -5.45 MJ per mol C8H18. The temperature change of the calorimeter is 16.5 oC. What is the heat capacity of the calorimeter?
Friday, March 14, 2014 at 3:09pm

Chemistry
Determine the rate constant for the following second-order reaction: A=C+2D given that the initial concentration of A is .3 M and that the concentration of C increase to .01 M in 200 seconds. Express the result in terms of the rate law for the loss of A.
Friday, March 14, 2014 at 3:05pm

Chemistry
How much water can be produced from the complete reaction of 3.64 L of oxygen gas, at STP, with hydrogen gas? Answer in units of g
Friday, March 14, 2014 at 2:22pm

Chemistry
Uranium 235 problem that exits
Friday, March 14, 2014 at 1:51pm

Chemistry
how many grams of bromine will be present in a sample that molar mass of 70.0 g/mol and occupies a 2.00L container at 117 kPa and 35.1C
Friday, March 14, 2014 at 1:28pm

Chemistry
A student has 600.0 mL of a 0.30M solution of HNO3. How much water must she add in order to make it a 0.15 M solution? Be careful how this question is answered.
Friday, March 14, 2014 at 1:07pm

chemistry
Five liters of air at -50.0°C are warmed to 100.0°C. What is the new volume if the pressure remains constant?
Friday, March 14, 2014 at 12:30pm

chemistry
In standardizing a potassium hydroxide solution, a student finds that 32.60mL of the base solution is needed to titrate 0.5045 grams of KHP to a phenolphthalein end point. In another titration, 26.63mL of this same base solution is needed to titrate 0.2003grams of an unknown ...
Friday, March 14, 2014 at 11:53am

chemistry
Calculate the molarity if a Ba(OH)2 solution if a 37.25ml portion of this solution is neutralized by 45.00mL of 1.500M HCl. You will need the balanced reaction
Friday, March 14, 2014 at 11:49am

chemistry
A radioactive sample contains 2.45 g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 11.4 days?
Friday, March 14, 2014 at 10:40am

Chemistry
How many grams of I2 are present in a solution if 39.85mL of 0.160M Na2S2O3 solution is needed to titrate the I2 Solution
Friday, March 14, 2014 at 1:43am

Chemistry
How many grams of a 17.7% potassium sulfate solution would contain 419.9 g potassium sulfate? Answer in units of g
Thursday, March 13, 2014 at 10:50pm

Chemistry
Write the equation for the dissolution of NH4NO3 in water. If 5.95 mol of NH4NO3 are dissolved, how many total moles of ions are produced? Answer in units of mol
Thursday, March 13, 2014 at 10:48pm

Chemistry
How many moles of ammonia gas can be formed from the complete reaction of 44.8 liters of nitrogen gas at standard temperature and pressure (STP), according to the balanced equation, N2 (g) + 3H2 (g) arrow 2NH3 (g)?
Thursday, March 13, 2014 at 10:00pm

Chemistry
Express the concentration of a commercial hydrogen peroxide solution, which is 3.0 (w/w), as a molarity. Show all work
Thursday, March 13, 2014 at 10:00pm

chemistry
Can u show the solution to this problem? What is the mass of silver that can be prepared for 1.00g of copper metal Cu (s)+2AgNO3(ag)= Cu(NO3)2(ag)+2Ag(s)
Thursday, March 13, 2014 at 9:49pm

Chemistry
What are the molality and mole fraction of solute in a 32.3 percent by mass aqueous solution of methanol (CH3OH)? molality = ?m mole fraction =
Thursday, March 13, 2014 at 8:28pm

Chemistry
What is the mole fraction of NaOH in an aqueous solution that contains 33.4% NaOH by mass?
Thursday, March 13, 2014 at 8:21pm

Chemistry Help Please
1)how would the accuracy of your determined keq change if all your volume measurements were made with graduated cylinders rather than pipets ? 2) if all of the SCN^- was not converted completely to FeNCS^2+ when the calibration curve was prepared would this raise or lower the ...
Thursday, March 13, 2014 at 7:36pm

Chemistry
The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M t (min) Abs ...
Thursday, March 13, 2014 at 7:32pm

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