Thursday
October 30, 2014

Homework Help: Science: Chemistry

Recent Homework Questions About Chemistry

Post a New Question | Current Questions

CHEMISTRY
The value of the equilibrium constant for the reaction below is 40.0 at a specified temperature. What would be the value of that constant for the reverse reaction under the same conditions? H2(g) + I2(g)  HI(g)
Thursday, April 10, 2014 at 11:08pm

CHEMISTRY
The value of the equilibrium constant for the reaction below is 40.0 at a specified temperature. What would be the value of that constant for the reverse reaction under the same conditions?
Thursday, April 10, 2014 at 10:48pm

Chemistry
The Ksp of iron(II) hydroxide, Fe(OH)2, is 4.87 × 10-17. Calculate the solubility of this compound in g/L.
Thursday, April 10, 2014 at 10:15pm

chemistry
Nitrogen and oxygen react to form nitric oxide (NO). All substances are in the gas phase. If 0.352 atm of nitrogen and 0.511 atm of oxygen react, what is the partial pressure of nitric oxide (in mmHg) when this reaction goes 73.9 complete. The temperature and volume are constant.
Thursday, April 10, 2014 at 9:50pm

Chemistry
A student was given a solid containing a mixture of nitrate salts. The sample completely dissolved in water, and upon addition of dilute HCl, no precipitate formed. The pH was lowered to about 1 and H2S was bubbled through the solution. No precipitate formed. The pH was ...
Thursday, April 10, 2014 at 9:49pm

Chemistry
2) What is the empirical formula of a compound containing C, H, O if combustion of 1.23g of the compound yields 1.8g CO2 and .74g of H2O 3) What are the empirical and molecular formulas of a hydrocarbon if combustion of 2.10g of the compound yields 6.59g CO2 and 2.7g H20 and ...
Thursday, April 10, 2014 at 9:48pm

Chemistry, Science
Write the balanced chemical equation for each of these reactions. Include phases. When aqueous sodium hydroxide is added to a solution containing lead(II) nitrate, a solid precipitate forms. However, when additional aqueous hydroxide is added the precipitate redissolves ...
Thursday, April 10, 2014 at 9:33pm

Chemistry
Determine the mass of the products formed by the combustion of a 7.6g of a coumpound with emprical formula C7H12
Thursday, April 10, 2014 at 9:31pm

chemistry
A 4.70 g sample of a certain gas occupies 530. mL at STP. What mass of the same gas is present in a 1.15 L container at 40.5°C and 785 mm Hg?
Thursday, April 10, 2014 at 8:29pm

chemistry
You have been asked to do a dilution of a copper sulfate solution. The solution to be diluted is 2.88 M copper sulfate. What volume of the 2.88 M copper sulfate is required to make 250 mL of 1.03 M copper sulfate solution?
Thursday, April 10, 2014 at 7:42pm

chemistry
What is the difference between the speed of a moving object and its velocity?
Thursday, April 10, 2014 at 6:38pm

chemistry help~~~~ Please!!!
how should the ph of a 0.1 m solution of nac2h3o2 compared with that of a 0.1 m solution of kc2h3o2?
Thursday, April 10, 2014 at 6:16pm

CHEMISTRY HELP !!!! Check
using Kb, for NH3 (from Appendix E), calculate Ka for the NH4+ ion. Kb for NH3 is 1.81 x 10^-5 Ka for NH4+ is Kw / Kb = 10^-14 / 1.81 x 10^-5 = 5.52 x 10^-10
Thursday, April 10, 2014 at 5:58pm

chemistry
What would be the final concentration of [K+] if we mix 0.234 L of a solution with a concentration of 1.2M K2CO3 with 312.5 mL of a solution with a concentration of 0.32 M K3PO4
Thursday, April 10, 2014 at 5:56pm

Chemistry
Will someone show me the formula or help me through working this question? Thanks! A 2.85g lead weight, initially at 10.3 deg C, is submerged in 7.55g of water at 52.3 deg C in an insulated container. what is the final temperature of both substances at thermal equilibrium?
Thursday, April 10, 2014 at 5:45pm

CHEMISTRY HELP !!!!
NH4CL , ZNCL2 , KAL(SO4)2 FIND THE FOLLOWING NET IONIC EQUATION FOR HYDROLYSIS EXPRESSION FOR EQUILIBRIUM CONSTANT (KA OR KB) VALUE THANK YOU SO MUCH!!!
Thursday, April 10, 2014 at 5:32pm

Chemistry
The overall hydrogen burning reaction in stars can be represented as the conversion of four protons to one alpha particle. Use the data for the mass of H-1 and He-4 to calculate the energy released by this process.
Thursday, April 10, 2014 at 3:18pm

Chemistry
The half-life of Th-232 is 1.4E10. Find the number of disintegrations per hour emitted by 1 mol of Th-232.
Thursday, April 10, 2014 at 3:16pm

Chemistry
A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3 with 50 mL of 0.300 NH4Cl. The pKb of NH3 is 4.74. NH3 + H2O-> NH4+ +OH- 7.50 mL of 0.125 M HCl is added to the 100 mL of the buffer solution. Calculate the concentration of NH3 and NH4Cl for the buffer solution...
Thursday, April 10, 2014 at 2:28pm

Chemistry
Minimum elevation in boiling point is given by a solution of 1. 0.1M Urea 2. 0.1 NaCL 3. 0.1 Mgcl2 4. 0.1M AL2(So4)3
Thursday, April 10, 2014 at 2:18pm

Chemistry
Write ionic equation for the following: A. Na3PO4 + 3 AgNO3 --> 3 NaNO3 + Ag3PO4 B. (NH4)2SO4 + Ba(C2H3O2 + BaSO4
Thursday, April 10, 2014 at 1:45pm

Chemistry Equilibrium
At 500 ºC, the decomposition of water into hydrogen and oxygen, 2H2O(g) 2H2(g) + O2(g) has Kc = 6.0 × 10-28. What are the concentrations of H2 and O2 that are present at equilibrium in a 2.00 L reaction vessel at this temperature if the container originally held 0....
Thursday, April 10, 2014 at 1:27pm

chemistry
Assuming that 1g of aspirin dissolves in450ml 0f water at 10 degrees Celsius. How much aspirin would be lost in the 5ml of water added to the reaction mixture if the mixture were at 10 degree Celsius during the filtration?
Thursday, April 10, 2014 at 1:14pm

Chemistry
The half-life of 232Th is 1.4 * 10^10. Find the number of disintegrations per hour emitted by 1 mil of 232Th in 1 min.
Thursday, April 10, 2014 at 1:05pm

chemistry
Calculate the volume of solution needed to obtain 0.320 mol of KCl from a solution with a concentration of 0.64 mol dm-3
Thursday, April 10, 2014 at 12:03pm

Chemistry
What change in temperature is neeeded when 40.0g of water absorbs 2500 calories of heat?
Thursday, April 10, 2014 at 10:07am

Chemistry
Find the amount of energy absorbed by 10.0 g of water when the temperature is increased from 10.0 degrees celcius to 20.0 degrees celcius? What is this amount in calories? KCAL?
Thursday, April 10, 2014 at 10:06am

Chemistry help plzzzzz!!!!!
I've tried solving this problem 100x and i keep getting it wrong. I dont know where i am going wrong. Wouldnt it be: (100ml * 4.180 * 6.49) + (6.50*6.49) 2713+42.2=2755.2= 2755.2/0.05=55104 Then convert to kj so 55104/1000=55.104 which would be 55.1 for correct sig digits...
Thursday, April 10, 2014 at 12:32am

Chemistry
How many atoms of each element are represented in the following: A.) 3NaCl B.) H2SO4 C.) 4H2SO4
Thursday, April 10, 2014 at 12:11am

Chemistry
If the CO2 is not removed by boiling after the addition of HCL, how will this affect the amount of NaoH required to reach the bromophenol endpoint. Explain.
Wednesday, April 9, 2014 at 11:30pm

chemistry
Using the equation Zeff=Z−S and assuming that core electrons contribute 1.00 and valence electrons contribute 0.00 to the screening constant, S, calculate Zeff for the 2p electrons in both ions.
Wednesday, April 9, 2014 at 10:50pm

chemistry
Predict Zeff for the outermost electrons in the Rb atom based on the calculations for Na and K using Slater's rules.
Wednesday, April 9, 2014 at 10:30pm

chemistry 1
Predict Zeff for the outermost electrons in the Rb atom based on the calculations for Na and K using Slater's rules.
Wednesday, April 9, 2014 at 10:29pm

chemistry
I can't seem to figure out the name of this organic molecule. I know it's an amine, but that's it. There are two methyls (CH3) attached to a CH, followed by (in order) NH, CH2, CH2, CH2, and CH3. (ignore the ^^^, I had to use them so the atoms would line up...
Wednesday, April 9, 2014 at 9:57pm

Chemistry
For a particular redox reaction NO is oxidized to NO3^- and Cu^2+ is reduced to Cu^+ . Complete and balance the equation for this reaction in basic solution. We are given this as a guide to start NO + Cu^2+ --> NO3^- + Cu^+ I started with: Cu^2+ + 2e- --> Cu No + 2H2O...
Wednesday, April 9, 2014 at 9:44pm

chemistry
A sample of oxygen at room temperature occupies a volume of 500. L at 1.75 atm. What would be the volume of this gas at 2.50 atm at the same temperature?
Wednesday, April 9, 2014 at 7:40pm

chemistry
If a scuba diver's lungs have a normal capacity of 4.9 L at sea level (1.0 atm), what would be the volume of her lungs if the pressure at a depth of 50 ft is 975 mmHg?
Wednesday, April 9, 2014 at 7:39pm

Chemistry
A solution is made by mixing 500 ml of 0.172 M NaOh with exactly 500 ml of 0.100 M CH3COOH. Calculate the equilibrium concentration of the species below. Ka of CH3COOH is 1.8 x10^-5 [H+]=? {OH-]=? [CH3COOH]=? [Na+]=? [CH3COO-]=?
Wednesday, April 9, 2014 at 5:22pm

Chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ?E is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
Wednesday, April 9, 2014 at 1:30pm

chemistry
I'm having trouble naming this organic chemistry compound. (I'm not sure how to include a picture in this, so I'll try my best to explain it in words and attempt to type it out) The full formula is C9H16. It's an alkyne and the longest carbon chain is 5 carbons...
Wednesday, April 9, 2014 at 12:21pm

Chemistry
A sample of gas has a volume of 6.20 L at 23 degrees celsius at a pressure of 1.90 atm. What is its volume at STP?
Wednesday, April 9, 2014 at 11:47am

chemistry
What is the pressure in millimeters of mercury of 0.0115mol of helium gas with a volume of 206mL at a temperature of 25∘C?
Wednesday, April 9, 2014 at 11:44am

Chemistry
The observed general trend in ionization energies shows two slight discontinuities in each period. Examine the electron configuration at these points and explain why such a discontinuity may occur.
Wednesday, April 9, 2014 at 2:13am

chemistry
To what volume should you dilute 60mL of a 12.0M H2SO4 solution to obtain a 1.85M H2SO4 solution?
Tuesday, April 8, 2014 at 11:36pm

chemistry
why should you use a minimum amount of water to rinse the conical vial while transferring the purified acetaminophen to the Hirsch funnel?
Tuesday, April 8, 2014 at 10:37pm

chemistry
is 3M less or more concentrated than 9M of sulfuric acid? I think that 9M is more concentrated but I wanted to make sure. thanks
Tuesday, April 8, 2014 at 9:03pm

chemistry
If a gas contains 25 ml of oxygen at 37oC and a pressure of 700 mm Hg, what is the volume under STP.
Tuesday, April 8, 2014 at 8:53pm

chemistry
I want to make sure I am correct in classifying whether the following properties of hydrogen are chemical or physical. thanks 1. hydrogen will burN in in oxygen to form water. CHEMICAL 2. hydrogen does not support combustion. CHEMICAL 3.hydrogen is usually found combined with ...
Tuesday, April 8, 2014 at 8:45pm

chemistry
If during an experiment, only potassium channels open on a neuron, what do you expect will happen to the membrane potential? Why?
Tuesday, April 8, 2014 at 7:00pm

Chemistry
What is the pH of a solution of NaOH 10^-12 M?
Tuesday, April 8, 2014 at 6:39pm

chemistry
how many milliliters of .400M hydrogen Monobromide solution can be made from 50mL of 8M hydrogen monobromide solution?
Tuesday, April 8, 2014 at 4:03pm

chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
Tuesday, April 8, 2014 at 2:18pm

Chemistry lab
I mixed 10 mL of 9mM KI with 5 mL of 0.9mM in a flask, and then added it to a beaker that contained 10 mL of 45 mM KBrO3, and 10 mL of 90mM HCl. This reaction took 61.60 seconds to complete. I think I need to find the change in concentration, but don't know how to do this...
Tuesday, April 8, 2014 at 12:43pm

Chemistry
From the solubility product constants for CaF2 (fluorite) and CaSO4 (anhydrite) determine the equilibrium constant for the reaction CaF2 + SO4 2- --> CaSO4 + 2F-
Tuesday, April 8, 2014 at 11:59am

Chemistry
What is the ionic strength, I, of a solution at 25C containing 0.002 mol/L of BaSO4 and 0.001 mol/L of BaCl2? What is the activity coefficient of Ba2+ in this solution?
Tuesday, April 8, 2014 at 11:57am

Chemistry
Consider a groundwater saturated with respect to PbSO4 (Ksp= 1.7*10^-8) mixing with a groundwater saturated with respect to CaSO4 (Ksp=10^-5). Assume a 50:50 mixture between the waters such as 500mL of each water mixing to form a 1.0L solution a. What is the saturation index (...
Tuesday, April 8, 2014 at 11:56am

Chemistry
How many moles are in 1.50 x 1023 molecules NH3? A. 2.49 x 10 -1 mol NH3 B. 2.49 x 101 mol NH3 C. 2.65 x 10 -1 mol NH3 D. 2.78 x 10 1 mol NH3
Tuesday, April 8, 2014 at 11:55am

chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ...
Tuesday, April 8, 2014 at 10:36am

Chemistry
Can someone please help me here? It's review for my test. Thanks! Calculate the expected pH of the buffer prepared in Part I of this lab. The Ka of acetic acid is 1.8 x 10-5 Calculate the expected pH when 10.0mL of 0.10M HCl is added to the buffer from question 3 Calculate...
Tuesday, April 8, 2014 at 9:54am

Chemistry
I am not sure if I understand how to balance this correctly. I need to write a balanced equation for the decomposition of solid copper(ii) sulfate to form gaseous sulfur trioxide and solid copper (ii) oxide. 2CuSO7 = CuSO4 + SO3 + CuO
Tuesday, April 8, 2014 at 1:33am

Chemistry Help Please!!!
A radioactive substance has a half-life of 4 days. Suppose we have 800 mg of this substance. a) Find the equation of the mass remaining after t days. Use the exact value for k not a decimal approximation. b) Rounding your answer to the nearest tenth of a mg, find the mass ...
Monday, April 7, 2014 at 11:26pm

Chemistry
There are two containers filled with gases. In both containers, gases are at the same temperature and presssure. The first container is 3 L and contains 0.9 moles of gas. The second container is 1 L. How many moles of gas are there in the second container?
Monday, April 7, 2014 at 10:42pm

Chemistry
a gaseous mixture of nitrogen and oxygen has a total pressure of 770 torr. the partial pressure of nitrogen is 700 torr. what is the partial pressure of oxygen?
Monday, April 7, 2014 at 10:40pm

Chemistry
calculate the molar weight of Freon-II, of 8.29 liters of its vapor at 200 degrees celcius and 790 mm Hg has a mass of 30.5 g.
Monday, April 7, 2014 at 10:28pm

chemistry
calculate the molar weight of Freon-II, of 8.29 liters of its vapor at 200 degrees celcius and 790 mm Hg has a mass of 30.5 g.?
Monday, April 7, 2014 at 10:20pm

Chemistry
A piece of metal weighing 5.10g at a temperature of 48.6 degree Celsius was placed in a calorimeter in 20.00 mL of water at 22.1 degree Celsius. The final equilibrium temperature was found to be 29.2 degree celsius. What is the specific heat of the metal?
Monday, April 7, 2014 at 9:55pm

Chemistry
How many milliliters of a 5.0 M H2SO4 stock solution would you need to prepare 123.5 mL of 0.48 M H2SO4?
Monday, April 7, 2014 at 9:38pm

chemistry
What volume of 1.25M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.500M Na2CO3?
Monday, April 7, 2014 at 8:29pm

Chemistry
Could someone please let me know if I have the answer to the following question correct? If my answer is incorrect could you please help me answer this question. what is the difference between 3M and 9M of sulfuric acid? I think the difference is that there are 3 moles of ...
Monday, April 7, 2014 at 8:15pm

chemistry
Convert the following pressures to pressures in atmospheres. a. 151.98 kPa b. 45.6 psi
Monday, April 7, 2014 at 6:33pm

Chemistry
A gas has a pressure of 4.62 atm when its volume is 2.33 L. If the temperature remains constant, what will the pressure be when the volume is changed to 1.03 L? Express the final pressure in mm Hg.
Monday, April 7, 2014 at 6:31pm

Chemistry
10 mL of 0.1 HCl was added to 9mL of water. 10 mL of that solution was added to another 90 mL of water. The student diluted the sample as above 1 time(s). What is the pH of the solution?
Monday, April 7, 2014 at 5:13pm

chemistry
A solution of 25mL of 0.5M c2h5nh2 is titrated with hydrochloric acid solution. During titration 5mL of .5M hcl is added dropwise. As volumes are additive. Calculate the pH of the resulting solution
Monday, April 7, 2014 at 12:03pm

chemistry
A 0.8612g sample of a mixture consisting of NaBr,NaI and NaNO3 was analysed by adding AgNO3 to precipitate the Br^- and I^-,yielding 1.0186g mixture of AgBr and AgI.The precipitate was then heated in a stream of Cl2, converting it to 0.7125g of AgCl. Calculate the %w/w NaNO3 ...
Monday, April 7, 2014 at 8:15am

chemistry
a solution formed by mixing 50ml of 10.0 M NaX with 50ml of 2.0x10^3M CuNO3.Assume that Cu(l) forms complexions with X asn follows Cu^+ + X^- = CuX K1=1x 10^2 CuX + X^- = CuX2^- K2=1 x10^4 CuX2^- + X^- =CuX3^2- K3= 1x10^3 with overall reaction Cu^+ +3X^- = CuX3^2- K=1X 10^9 ...
Monday, April 7, 2014 at 7:16am

chemistry
if I have the reaction Magnesium + Hydrochloric Acid -> Magnesium Chloride + Hydrogen Gas And I have to 'investigate the effect of the concentration of the acid on the volume of hydrogen gas produced in the above reaction', what would be expected to happen?
Monday, April 7, 2014 at 7:09am

Chemistry
For a voltaic cell that's made with zinc and copper {reaction equation: Zn(s) + Cu2+(aq) ---> Cu(s) + Zn2+(aq)}, if the concentration of zinc nitrate increases, would the cell voltage decrease, or would it increase? Thanks!
Monday, April 7, 2014 at 1:47am

organic chemistry
For proton NMR spectra, does a peak at 0 ppm indicate anything significant or is it likely to be a signal arising from a solvent?
Monday, April 7, 2014 at 1:25am

Chemistry
Can the mercury cation (Hg2+) oxidize silver metal to aqueous silver cation? If so, would the reaction equation be as follows: 2 Ag(s) + Hg2+(aq) ---> Hg(l) + 2 Ag+(aq) Thank you!
Monday, April 7, 2014 at 1:21am

Chemistry
Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 ∘C. At what temperature does benzene boil when the external pressure is 480torr ?
Monday, April 7, 2014 at 12:02am

Chemistry
How much ice (in grams) with the temperature of 0∘C would have to melt to lower the temperature of 355mL of water from 26∘C to 4∘C? (Assume the density of water is 1.0 g/mL.)
Monday, April 7, 2014 at 12:00am

Chemistry
What are the signs of dH, dS, and dG for the following and please explain why? Also what does it mean by sublimation, and molten? 1. CO2(s) --> CO2(g) (Dry ice subliming) dH = ? dS = ? dG = ? 2. The electrolysis of molten NaCl(l). dH = ? dS = ? dG = ?
Sunday, April 6, 2014 at 10:56pm

Chemistry
Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Calculate ΔH∘rxn for this reaction using standard enthalpies of formation. (The standard enthalpy of formation of gaseous propane is -103.9 kJ/mol.)
Sunday, April 6, 2014 at 10:29pm

chemistry
When 0.451g of biphenyl (C12H10) undergoes combustion in a bomb calorimeter, the temperature rises from 26.7∘C to 29.6∘C.Find ΔErxn for the combustion of biphenyl in kJ/mol biphenyl. The heat capacity of the bomb calorimeter, determined in a separate ...
Sunday, April 6, 2014 at 10:29pm

Chemistry
Why organic compound are volatile in nature
Sunday, April 6, 2014 at 10:16pm

Chemistry
A sample of gas has a mass of 0.550g . Its volume is 111mL at a temperature of 75∘C and a pressure of 763mmHg . Find molar mass of gas
Sunday, April 6, 2014 at 9:54pm

Chemistry
What volume of Cl2 gas, measured at 687torr and 34∘C, is required to form 27g of NaCl?
Sunday, April 6, 2014 at 9:31pm

Chemistry
A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.30 ml? [assume the density of water is 1.00g/mL]
Sunday, April 6, 2014 at 9:09pm

Chemistry
For a reaction that has an equilibrium constant of 9 × 10–9, which of the following statements must be true? A) ∆G° is positive. B) ∆G° is negative. C) ∆H° is negative. D) ∆H° is positive. E) ∆S° is positive.
Sunday, April 6, 2014 at 9:00pm

College Chemistry (DrBob222)
Use the Nernst equation to calculate the iron (II) concentration for the following iron/copper electrochemical cell when [Cu2+] = 0.012 M and Ecell = 0.750 V at 35°C. Cu2+ (aq) + Fe (s) --> Cu (s) + Fe2+ (aq)
Sunday, April 6, 2014 at 8:55pm

Chemistry
if you have 9.50x10^25 molecules of KClO3 how many grams of KCl and O2 will you get? The balanced equation is 2KClO3 = 2KCl + 3O2
Sunday, April 6, 2014 at 7:49pm

Chemistry URGENT
I need help understanding oxidation I have a problem that states: The proper assignment of oxidation numbers to the elements in the compound LiAsO3 would be: I think the answer is +1 for Li, +3 for As and -2 for O. I think I am confusing oxidation with ionic charge. PLEASE HELP
Sunday, April 6, 2014 at 7:00pm

chemistry
What mass of N2O occupies a volume of 0.500 L at 0 degrees Celsius and 101.325 kPa?
Sunday, April 6, 2014 at 6:33pm

chemistry
what is the molecular mass of a gas if 0.833 g of it occupies 210 mL at 106.3 kPa and 8 degrees Celsius.
Sunday, April 6, 2014 at 6:32pm

Chemistry
1) it is found that .30 M solutions of the three shots Na3X, Na2Y and NaZ have pH's of 8.5, 7.0 and 10.5 not necessarily in order. (X,Y, and Z AE anions. Na is sodium ion) A) explain how anions can act as bases in aqueous solution. Write a chemical equation to explain your...
Sunday, April 6, 2014 at 6:21pm

chemistry
PLS HELP ME AND THANK YOU:) What is the molarity if 2.18 grams of CO(NO3)2.6H2O dissolved in 50.00ml of solution?
Sunday, April 6, 2014 at 5:30pm

Chemistry
I dont really understand these questions and their processes. And I am a bit iffy on redox reactions. For problem 3, can you show a step by step process how to do the problem? Problem 2, I do not fully understand how to do it at all. How would you know the resulted products? ...
Sunday, April 6, 2014 at 5:29pm

Chemistry
My question is ..can anyone explain how to do problem #2? I feel lost. :( And could you also explain why? Problem#1, is that a regular dG = dH - TdS problem? Then using Go = -RTlnK to find K? Im just afraid if there are other seps to it.. 1. The combustion of butane has the ...
Sunday, April 6, 2014 at 5:15pm

chemistry
a wet gas collected over water has a volume of 900 mL at50 degrees Celsius and a pressure of 84.6 kPa. The partial pressure of water at this temperature is 12.3 kPa. What is the volume of the dry gas at 120 kPa?
Sunday, April 6, 2014 at 5:01pm

Chemistry
How would you start and finish these questions by a step by step process? Does Amp equal to Joules? 1. How many grams of aluminum can be produced by the electrolysis of aqueous aluminum chloride by a current of 5.00 amps for 5.00 hours? 2. Consider the following ...
Sunday, April 6, 2014 at 4:58pm

Pages: <<Prev | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | Next>>

Post a New Question | Current Questions

Homework Help: Science

Search
Members