Tuesday
May 26, 2015

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

chemistry
A chemist heats a sample of copper(II) sulfate and finds that 63.9% of the mass is copper(II) sulfate and the other 36.1% by mass is the water. What is the formula of the hydrate?
Wednesday, March 18, 2015 at 8:38pm

Chemistry I
A bottle of vintage port wine has a volume of 750ml and contains 135ml ethanol. Ethanol has a density of 0.789g/ml. What is the molarity?
Wednesday, March 18, 2015 at 7:41pm

Chemistry
What is the concentration of arsenate ions in 3.5 M solution of arsenic acid? The acid-dissociation constants of H3AsO4 are: Ka1 = 5.0 x 10-3 Ka2 = 9.3 x 10-8 Ka3 = 3.0 x 10-12 I can't figure out how to set up the question
Wednesday, March 18, 2015 at 7:23pm

Chemistry
Assuming that the lab procedure was conducted in an identical manner in all other respects, if a large quantity of vinegar had been taken initially for analysis, for example, a 50.0mL instead of 25.0 mL discuss briefly how each of the following would change. a. the moles of ...
Wednesday, March 18, 2015 at 7:23pm

chemistry
A 8.60-g sample of solid CaSO4·2H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?
Wednesday, March 18, 2015 at 7:16pm

rate law chemistry
hey so this is for rate law if the first step is the slow step. it is also an equilibrium. I just want to check if this is right. [Acetophenone]+[Ethoxide]<-k1--> k-1 [Intermediate]+[Ethanol] Just want to make sure this will be the rate law: k1/k-1 [Acetophone][Ethoxide...
Wednesday, March 18, 2015 at 6:53pm

Chemistry
A hot air balloon has a volume of 5.00x10^6 liters. Assuming a density of air of 1.293g/L at 25C and 1atm pressure, what temperature must the operator of the balloon achieve in order for the balloon to lift a 500.0kg payload? How do I set this up???????
Wednesday, March 18, 2015 at 6:25pm

chemistry
1. What is the cause of a gas sample exerting pressure on its surroundings, such as a container? A. The sum of the volumes of all the gas particles in the sample B. Chemical reactions with the container walls C. Collisions of particles of gas D. The weight of the particles on ...
Wednesday, March 18, 2015 at 2:37pm

Chemistry
What is the molarity of an HNO3 solution if 24.1mL of a 0.250M Ba(OH)2 solution is needed to titrate a 15.0mL sample of the acid? Can you tell me the process to finding this answer?
Wednesday, March 18, 2015 at 2:34pm

chemistry
The reaction below has an equilibrium constant of Kp=2.26×104 at 298 K. CO(g)+2H2(g)⇌CH3OH(g) Calculate Kp for the reaction below. 3CH3OH(g)⇌3CO(g)+6H2(g)
Wednesday, March 18, 2015 at 2:16pm

Chemistry
An unknown gaseous hydrocarbon contains 85.63 % carbon. If its density is 0.488 g/L at 0.355 atm and 100°C, what is the molecular formula of the gas? I can't figure this out. By assuming the total mass to be 100g, I get 85.63g C and 14.37g H which I then used to get ...
Wednesday, March 18, 2015 at 1:34pm

chemistry
consider mixing 3.5L of co2 and 1.8L of h2o at 35C and 740mm Hg. determine the mass of the unbalanced reaction. CO2 + H2O = C4H10 + O2
Wednesday, March 18, 2015 at 12:28pm

chemistry
How much energy is needed to completely remove an electron from n = 2 in a hydrogen atom?
Wednesday, March 18, 2015 at 12:04pm

chemistry
A sample of ideal gas at room temperature occupies a volume of 32.0L at a pressure of 272torr . If the pressure changes to 1360torr , with no change in the temperature or moles of gas, what is the new volume, V 2 ?
Wednesday, March 18, 2015 at 11:38am

chemistry
High-pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purify chemical substances. The pressures used in this procedure range from around 500 kilopascals (500,000 Pa ) to about 60,000 kPa (60,000,000 Pa ). It is often convenient to know ...
Wednesday, March 18, 2015 at 11:38am

chemistry
The pressure in car tires is often measured in pounds per square inch (lb/in. 2 ), with the recommended pressure being in the range of 25 to 45 lb/in. 2 . Suppose a tire has a pressure of 45.0lb/in. 2 . Convert 45.0lb/in. 2 to its equivalent in atmospheres.
Wednesday, March 18, 2015 at 11:37am

Chemistry
Provide the balanced reaction, the value of K, and E(cell) at equilibrium for the for the electrochemical cell created from the two half-cell reactions below Cr^(3+) + e ==> Cr^(2+) Fe^(2+) + 2e ==> Fe Well, I got the balanced reaction: 2Cr^(2+) + Fe^(2+) ==> Fe + 2Cr...
Wednesday, March 18, 2015 at 10:59am

chemistry
1. Ideal gas particles: A. have no mutual attraction and no individual volume. B. have no mass or volume. C. have no odor and no color. D. have no density and do not form bonds. Is it A? 2. Why does the density of gas in a hot air balloon decrease as the gas is heated? A. The ...
Wednesday, March 18, 2015 at 1:53am

chemistry
Bacl2+h2so4 white coller way to ans
Wednesday, March 18, 2015 at 1:51am

chemistry
What would be the mass in grams of one million (1.0*10^6) chromium atoms?
Wednesday, March 18, 2015 at 12:30am

Chemistry
How does table salt (NaCl) dissolve in water? A. The oxygen atoms in water molecules attract sodium ions. B. Each sodium ion is surrounded by chloride ions. C. Each NaCl molecule is surrounded by water molecules. D. Water molecules hydrogen bond with sodium ions and chloride ...
Wednesday, March 18, 2015 at 12:29am

Chemistry
What are the concentrations of Cu^2+, NH3, and Cu(NO3)4^2+ at equilibrium when 18.8 g of Cu(NO3)2 is added to 1.0 L of a .400 M solution of aqueous ammonia? Assume that the reaction goes to completion and forms Cu(NH3)4^2+.
Tuesday, March 17, 2015 at 11:31pm

chemistry
To dissolve an ionic solid in water, you must first disrupt the ionic bonds that are holding the ionic lattice together. This is an endothermic process, yet many ionic solids have an exothermic heat of solution. (Heat is released when the ionic solid is dissolved.) This is ...
Tuesday, March 17, 2015 at 11:30pm

Chemistry
Liquid methyl alcohol, which has polar molecules, will dissolve: A. only solutes that are other polar liquids. B. only solutes that are other liquids. C. nonpolar solutes. D. polar solutes. Is the answer d.
Tuesday, March 17, 2015 at 10:46pm

chemistry
Thermochemistry: 1. Calculate the amount of heat required to decompose 3.5 moles of sodium bicarbonate. 2NaHCO3 + 129 kJ  Na2CO3 + H2O + CO2 In this question, the heat of the reaction is part of the question instead of being written beside it- (What's the ...
Tuesday, March 17, 2015 at 10:28pm

chemistry
Which step during the dissolving process releases energy? A. Separating solute particles from one another B. Adding solute into the solvent C. Separating solvent particles from one another D. Mixing the particles of solute with particles of solvent
Tuesday, March 17, 2015 at 10:15pm

Chemistry
Olive oil has a higher viscosity than benzene. Which statement best explains the reason for the difference in viscosity between these two liquids? A. Molecules of olive oil take up a smaller volume than molecules of benzene. B. Fewer intermolecular forces exist between ...
Tuesday, March 17, 2015 at 10:13pm

chemistry
2 NH3 (g) ----> N2 9g) + 3 H2 (g) at equilibrium, [NH3] = 0.0227 M, [N2] = 0.119 M, and [H2] = 0.346 M. Calculate Kc for the reaaction at this temperature
Tuesday, March 17, 2015 at 9:41pm

Chemistry
Write an equation to represent the oxidation of I- to I2 in acidic solution, with ozone as the oxidizing agent. I know ozone will be reduced to H2O, but I am not sure how to figure out the acidic solution. Thank you!
Tuesday, March 17, 2015 at 9:38pm

Chemistry
How many grams of aspirin are present in 0.50 mole of aspirin?
Tuesday, March 17, 2015 at 9:32pm

biology/ chemistry
how do electrolytes affect the formation of micelles?
Tuesday, March 17, 2015 at 8:46pm

chemistry
what is the iobic equation of zinc +iron(ll)sulphate solution
Tuesday, March 17, 2015 at 8:42pm

Chemistry
Write equations for the separation of Fe2O3 from Bauxite ore, along with a short description of the process. I have no idea where to start for this question, any help would be appreciated!
Tuesday, March 17, 2015 at 7:38pm

Chemistry
A certain reaction has an activation energy 52.93 kJ/mol. At what kelvin temperature will the reaction proceed 8.00 times faster than it did at 315K? Ea = 52.93 kJ/mol = 52930J R (gas constant) = 8.314 T1 = 315K k1 = rate constant at T1 T2 = ? k2 = rate constant at k2 = 8.00 ...
Tuesday, March 17, 2015 at 7:23pm

chemistry
Ammonia is often produced by reacting nitrogen gas with hydrogen gas. How many liters of ammonia gas can be formed from 12.9 L of hydrogen gas at 93.0°C and a pressure of 43.5 kPa? (Assume an excess amount of nitrogen gas.) I have absolutely no idea how to begin this.
Tuesday, March 17, 2015 at 6:56pm

Chemistry
I just want to make sure that D is the correct answer. Each halogen is a diatomic element. However, under normal conditions chlorine is a gas, bromine is a liquid, and iodine is a solid. What is the best explanation for this difference? A. The strength of the covalent bond ...
Tuesday, March 17, 2015 at 3:32pm

chemistry
I believe the answer is c I just wanted to make sure. What can help overcome a positive enthalpy of solution and allow a solid solute to dissolve in water? A. A decrease in entropy B. A large amount of energy released C. An increase in entropy D. A large amount of energy absorbed
Tuesday, March 17, 2015 at 3:21pm

chemistry
A mixture of gases contains 0.235 mol CO2, 0.124 mol CO, and 0.326 mol O2. If the total pressure of the mixture is 4.62 atm, what is the partial pressure of each gas?
Tuesday, March 17, 2015 at 2:09pm

chemistry
C6H12O6(s) + 9 O2(g) --------- 6 CO2(g) + 6 H2O(g) What volume of oxygen gas measured at 27oC and 0.987 atm is needed to react with 8 g of C6H12O6? (C-12.01, H-1.008, O-16.00).
Tuesday, March 17, 2015 at 1:58pm

Chemistry
The starting material in this synthesis experiment Fe(NH4)2(SO4)2*6H2O. What is the ionic charge of the atom? Show your calculations
Tuesday, March 17, 2015 at 11:38am

chemistry
2.241 g sample of nickel combines with oxygen to produce 2.852 g of metal oxide. Calculate the number of grams of xygen in the metal oxide.
Tuesday, March 17, 2015 at 10:47am

Chemistry
Enthalpy Change Given the following reactions: S(s) + O2(g) → SO2(g) ΔH = -297 kJ/mol SO2(g) + ½ O2(g) → SO3(g) ΔH = -141 kJ/mol Calculate the ΔH for the reaction: S(s) + 3/2O2(g) → SO3(g)
Tuesday, March 17, 2015 at 10:23am

chemistry
When a mixture of two black powders is heated, it gave off a gas which turned lime water milky Give a chemical equation to show the reaction between gas and lime water Red scales residue can be seen on the black residue. Name the red scales The red scale residue partly ...
Tuesday, March 17, 2015 at 5:08am

Chemistry
how many grams of potassium hydroxide would need to be added to 400 mL of 0.150M HNO3 to raise its pH to 2.5
Tuesday, March 17, 2015 at 3:07am

Chemistry
an unknown salt is either NaCN,NaC2H3O2, NaF, NaCl, or NaOCl. when 0.100 molar of the salt is dissolved in 1.00 L of solution, the ph of the solution is 8.07. what is the identity of the salt? where do I start? How do I solve it, cuz im not gettign right answer.
Tuesday, March 17, 2015 at 12:28am

Chemistry
Container A contains argon gas at 0C and pressure 380mmHg. Container B of volume 700 ml contains neon gas at 25C and pressure of 3atm. Both of these gases are placed in a 2L vessel at 273K and the total pressure is 1.46atm. What is the volume of container A?
Monday, March 16, 2015 at 11:40pm

Chemistry
HCI is a strong acid. What is the ion concentration, (H+), of a 0.0015M solution of HCI? What is the pH of a 0.0015M solution of HCI? I have looked in my book but it not making sense. I am not sure where to even start the problem. A little guidance please
Monday, March 16, 2015 at 11:30pm

chemistry
If a solution of lead iodide has [I-] = 1.1x10-4 M, what is the lead(II)ion concentration at equilibrium?
Monday, March 16, 2015 at 10:02pm

chemistry
The enthalpy of formation of MX is ΔHf° = –493 kJ/mol. The enthalpy of sublimation of M is ΔHsub = 143 kJ/mol. The ionization energy of M is IE = 437 kJ/mol. The electron affinity of X is ΔHEA = –317 kJ/mol. (Refer to the hint). The bond energy of ...
Monday, March 16, 2015 at 8:42pm

Physical Chemistry
If a 30g piece of ice at -5C is immersed in 125mL of water at 25C in an insulated container... A. Determine the final temperature and final composition of the system B. Determine the entropy changes of the ice and the water and the overall entropy change of this process.
Monday, March 16, 2015 at 7:50pm

Chemistry
How much heat is required to convert 6.78g of ice at − 14.0∘C to water at 24.0∘C ?
Monday, March 16, 2015 at 6:50pm

Chemistry
1. Imagine you have a saturated solution of Ca(OH)2, at equilibrium, that has some undissolved Ca(OH)2 precipitated on the bottom of the test tube. If you add an additional scoop of Ca(OH)2 to the solution will concentration of [OH-] in the solution (increase, decrease, or be ...
Monday, March 16, 2015 at 2:34pm

chemistry
The number of moles of solute in a bottle containing 300 mL of 0.178 mol/L sodium sulfite solution is
Monday, March 16, 2015 at 2:16pm

chemistry
The concentration of a solution made by diluting 10.0 mL of 0.685 mol/L NaBr to 300 mL is
Monday, March 16, 2015 at 2:15pm

chemistry
I need an example of an elementary reaction to go with the definition An elementary reaction is a reaction in which reactants are converted to products in a single step.
Monday, March 16, 2015 at 1:55pm

AP Chemistry
To have a buffer with a pH of 2.50, what volume of 0.510 M NaOH must be added to 100. mL of 0.230M H3PO4?
Monday, March 16, 2015 at 1:29pm

chemistry
A restaurant serves tea in aluminum mugs. The aluminum mug has a mass of 125 g, initially at 24.0 oC with 341 mL tea at 80.0oC. What is the final temperature of the tea after the tea and mug attain equilibrium. Assume the tea has the same specific heat capacity and density as ...
Monday, March 16, 2015 at 1:29pm

Chemistry
How many oxygen atoms are in 6Al (SO4)3
Monday, March 16, 2015 at 12:48pm

chemistry
How to prepare 14M Sulfuric acid
Monday, March 16, 2015 at 11:34am

CHEMISTRY
How many moles of methane gas, CH 4 , are in a 1.00×103L storage tank at STP?
Monday, March 16, 2015 at 10:46am

Chemistry
for a project i had to make cards with words and then an example of those words, and i've done almost all of them, but I have a few words I need examples for activation energy activation energy activated complex elementary reaction
Monday, March 16, 2015 at 10:45am

chemistry
In a coffee cup calorimeter, 50 mL of 0.1 M HCl and 50 mL of 0.1 M NaOH are mixed to yield the following reaction: HCl + NaOH  NaCl + H2O. The two solutions were initially at 22.1 oC and the final temperature is 24.2 oC. Calculate the heat that accompanies this ...
Monday, March 16, 2015 at 9:51am

chemistry
An aqueous solution contains 0.445 M ethylamine (C2H5NH2). How many mL of 0.226 M hydrochloric acid would have to be added to 150 mL of this solution in order to prepare a buffer with a pH of 10.200
Monday, March 16, 2015 at 2:58am

chemistry
N2 + 3H2 = 2NH3. What is the DeltaGo of the following reaction? 33.5 kJ/mol 34.5 kJ/mol 35.5 kJ/mol 36.5 kJ/mol
Monday, March 16, 2015 at 2:17am

Chemistry
I need definitions for chemistry and I can't come up with any heterogeneous reaction homogeneous reaction activation energy activation energy activated complex elementary reaction
Monday, March 16, 2015 at 2:13am

Chemistry
  show that the time dependent expectation value for the position x and momentum p match the solution of newton classical equation for HO drive the amplitude of vibration?
Monday, March 16, 2015 at 1:53am

Chemistry - Solubility
Calculate the solubility of copper(II) sulfide in a solution that is 0.150 mol L^-1 in NaCN. I am very confused on what to do. Since there are no common ions, I know that this is not the common ion effect. Also I do not believe this is a pH effect question. Is this a complex-...
Monday, March 16, 2015 at 1:05am

chemistry
Calculate how many grams of O2(g) can be produced from heating 31.8 grams of KClO3(s).
Sunday, March 15, 2015 at 11:25pm

chemistry
The power of the equation ΔG° = –RT ln(K) is that K can be determined from tabulated values of ΔG°f. Use the tabulated values of the Gibb's energy to determine K for the reaction, 2AB(l) ↔ 2A(g) + B2(g), at 298K. (R=8.314 J/K mol or R=0.008314 ...
Sunday, March 15, 2015 at 11:10pm

Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.
Sunday, March 15, 2015 at 9:27pm

Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.
Sunday, March 15, 2015 at 9:26pm

Chemistry
Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 70 mL of the concentrated HCl, adding it to water, and diluting to 0.500 L. Calculate the approximate molarity of this solution from the volume, percent ...
Sunday, March 15, 2015 at 9:09pm

chemistry
hi I have a hard time understanding the following question: The
Sunday, March 15, 2015 at 9:06pm

physics/chemistry
Okay so I want to solve for refractive index. I'm given the dielectric constant and the permeability M. From what I understand the refractive index is frequency dependent. I'm just unsure what equation to use. n=(Er)^1/2 does not work because the dielectric constant ...
Sunday, March 15, 2015 at 7:49pm

chemistry
a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of 1.5 using the result. ...
Sunday, March 15, 2015 at 6:39pm

chemistry
Suppose a reaction has the equilibrium constant K = 2.3 10-7 at a particular temperature. Will there be a large or small amount of unreacted starting material present when this reaction reaches equilibrium? a)There will be a small amount of unreacted starting material present ...
Sunday, March 15, 2015 at 6:05pm

chemistry
H2(g)+ o2(g)-> H20(l) (delta)Hf(h20(l)=-286 kj/mol the total volume of hydrogen needed fill the hindenberg was 2.3 x 15^5 m^3. what is the theoretical yield of heat (that which could have been evolved) when the hindenberg exploded, assuming all the hydrogen reacted?
Sunday, March 15, 2015 at 6:02pm

Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH when half the acid has been neutralized? 'I got 7.82 by using the HH formula but its wrong, help.
Sunday, March 15, 2015 at 5:01pm

chemistry
An aqueous solution contains 64g of ethanol( C2H5OH) in 122 grams of solution. The mole fraction of ethanol is:
Sunday, March 15, 2015 at 5:00pm

Chemistry
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. The Ka for HOCl is 3.0 x 10-8 M. What is the pH at the equivalence point? I used the HH formula and got pH=7.52+log(.222)=6.87, but its not right.
Sunday, March 15, 2015 at 5:00pm

Chemistry
What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the following reaction in each of the following cases? 2 SO3(g) equilibrium reaction arrow 2 SO2(g) + O2(g) ΔH° = 197 kJ (a) Oxygen gas is removed. increase decrease stay the same (b) The...
Sunday, March 15, 2015 at 2:16pm

chemistry
CaSiO3(s) +6 HF (g)-> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF that remains. b...
Sunday, March 15, 2015 at 1:38pm

chemistry
CaSiO3(s) +6 HF (g)-> CaF2(aq) + SiF4 (g) + 3 H2O(l) If a 65.6 g sample of CaSiO3 is reacted in an inert 83 L container at 25.5°C with HF at 1.00 atm pressure find the following. a. the mass of water, and CaF2 produced in the reaction and the mass of HF that remains. b...
Sunday, March 15, 2015 at 3:31am

Chemistry
Ammonium nitrate (NH4NO3) is an important agricultural industrial chemical as it provides readily available nitrogen for plant growth, and one can buy 50. pounds of ammonium nitrate for $38. Urea (CO(NH2)2) is an attractive alternative, and, not being a pre-cursor to an ...
Sunday, March 15, 2015 at 12:49am

Chemistry
Oil and water don't mix. We say that oil is
Saturday, March 14, 2015 at 7:21pm

H Chemistry
if 1.01x103 ml of h2o gas at stp is compressed into o.345ml container what would the new pressuer be
Saturday, March 14, 2015 at 6:51pm

Chemistry
How many millilitres of a 0.1 M solution of NaF and of 0.1 M solution of HF must be mixed to obtain 1L of buffer at pH = 4? Ka = 6.7 × 10-4 Currently I am quite confident with using the henderson and Hasselbalch equation but this question has left me stumped... Any help ...
Saturday, March 14, 2015 at 5:35pm

Chemistry
What is the cause of hexagonal structure ?
Saturday, March 14, 2015 at 4:54pm

Chemistry
Given that 12.25 g of aluminum sulfide is reacted with excess water. How many grams of aluminum hydroxide can be obtained? The molar mass of aluminum sulfide is 150.0 g and the molar mass of aluminum hydroxide is 78.0 g.
Saturday, March 14, 2015 at 2:21pm

Chemistry
Describe the procedure to prepare this solution: 100 mL of a solution 0.1 M of KMnO4 Help? I don't understand what this implies.
Saturday, March 14, 2015 at 2:19pm

Chemistry
Suppose 0.500 g of sulfur combines with 1.00 g of copper. What is the empirical formula of the compound? The atomic mass of sulfur is 32.065 g and the atomic mass of copper is 63.546 g.
Saturday, March 14, 2015 at 2:17pm

chemistry
what are the islamic values in the experiment composition of potassium chlorate?I have to do lab report about the topic and the due date is around the corner.please help me..
Saturday, March 14, 2015 at 12:21pm

Chemistry help
Write two molecular formulas that reduce to each to each of the given empirical formulas. Do not include the given empirical formulas. 1. Al2(SO4)3 . Cr(CN)3
Saturday, March 14, 2015 at 12:20pm

Chemistry help
washing soda is a hydrate of sodium carbonate. a 2.714 g sample of washing soda is heated until a constant mass of 1.006 of na2co3 is reached. what is the mass of the water evaporated? what is the percent water in the compound?
Saturday, March 14, 2015 at 12:15pm

chemistry
the wave length of the first line of the Lyman series of hydrogen is identical to the second line of the Balmer series for some hydrogen like ion 'X'.Identify the ion.
Saturday, March 14, 2015 at 10:58am

SCIENCE(CHEMISTRY)
calculate the mass of silver deposited when a current of 2.6a is passed through a solution of a silver salt for 70mins ag=108,1 faraday 96500
Saturday, March 14, 2015 at 9:22am

chemistry
Hey DrBoB222 I was wondering if you could help me with that problem just a little bit ago again?
Saturday, March 14, 2015 at 12:34am

chemistry
I would love help on trying to start this problem?
Friday, March 13, 2015 at 11:49pm

chemistry
Several reactions are carried out using AgBr, a cream-colored silver salt for which the value of the solubility product constant, Ksp, is 5.0 x 10-13 at 298 K. a) Calculate the value of [Ag+] in 50.0 mL of a saturated solution of AgBr at 298 K. b) A 50.0 mL sample of distilled...
Friday, March 13, 2015 at 11:37pm

chemistry
What is the strongest intermolecular force that occurs between carbon dioxide molecules? A. London dispersion forces B. Hydrogen bond C. Covalent bond D. Dipole-induced dipole attractions I think the answer is D but I am not sure
Friday, March 13, 2015 at 11:33pm

  1. Pages:
  2. <<Prev
  3. 4
  4. 5
  5. 6
  6. 7
  7. 8
  8. 9
  9. 10
  10. 11
  11. 12
  12. 13
  13. 14
  14. 15
  15. 16
  16. 17
  17. 18
  18. Next>>

Homework Help: Science

Members