Sunday
April 20, 2014

Search: how many bromine molecules Br2 have a mass equal to 31.8g

Number of results: 4,010

chemistry need help
There are 6.02 x 10^23 molecules in a mole of molecules or atoms in a mole of atoms. Here is how you do the first one. 3.161 x 10^21 molecules CO2 x (1 mole CO2 molecules/6.02 x 10^23 molecules CO2) x (2 atoms O/1 molecule CO2) = ?? moles O atoms in 3.161 x 10^23 molecules CO2...
Tuesday, March 10, 2009 at 6:45pm by DrBob222

chemistry
The smallest particle of a compound that has all the chemical properties of that compound. Molecules are made up of two or more atoms, either of the same element or of two or more different elements. Ionic compounds, such as common salt, are made up not of molecules, but of ...
Monday, May 5, 2008 at 12:25am by ~christina~

Chm
Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.
Friday, October 10, 2008 at 7:07pm by Karina

Chemistry
2-chlorobutane from 1-butene and hydrogen chloride CH2=CH-CH2CH3 + HCl -> CH3-CH(Cl)-CH2-CH3 which is a straightforward addition reaction. Do you need to include conditions? for bromobenzene from benzene and bromine I came up with 1C6H6+1Br2->1C5H6Br+1HBr is this correct...
Tuesday, June 8, 2010 at 8:27pm by Dr Russ

Chemistry
The presence of the orange-"born--what's that>" makes me think Br2 was formed. If that's true then I know permanganate in acid solution goes to Mn^+2. So you would write the two half cells as MnO4^- ==> Mn^+2 (acid solution) Br^- ==> Br2 and balance from there. Then ...
Wednesday, February 27, 2008 at 8:15pm by DrBob222

oops---chemistry
I disagree with the answer of 400 molecules H2O produced. Only 200 will be produced. This is a limiting reagent problem. I work these by calculating, with two separate calculations, the amount of H2O that can be formed, then using the smaller value. For example, If we take 200...
Wednesday, October 9, 2013 at 2:29am by DrBob222

Chemistry-Please help
Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules. A)What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.
Thursday, October 15, 2009 at 8:54pm by Rose

Biology(Anatomy&Physiology)
1)Which group of organic molecules makes up your genetic code 2)A substance which tends to resist a change in the pH of a solution is called a 3)Which buffers is the most common in the body 4)Which of molecules is primarily made of CHON 5)Which is the building block or monomer...
Wednesday, October 15, 2008 at 8:30pm by Stephanie

CHEMISTRY
One of the tenets of the Kinetic Molecular Theory is that individual molecules occupy no volume. In a large volume with little pressure there are so few individual molecules in contrast to the size of the vessel that they are far apart and their individual volumes doesn't ...
Tuesday, May 18, 2010 at 6:28pm by DrBob222

quemistry
Br2 + Cl2 ---> 2BrCl 1. FIND ALL THE REASONS ESTEQUIOMETRICAS WITH REGARD TO Cl2. 2. all the masses of Cl2 are needed to form 55g of BrCl. 3. all the grams of Br2 are needed to form 38g of BrCl. please I need help for this question for a homework. thanks
Friday, March 4, 2011 at 8:33am by leslie

6th grade science
Think about it. For a gas the molecules are randomly oriented usually with a great deal of space between them (except at high pressures) and they fill the space in which they are located. For a liquid the molecules are closer together but they do not fill the space in which ...
Wednesday, September 23, 2009 at 7:48pm by DrBob222

chemistry
How many moles glucose do you have in 150 grams glucose? moles = grams/molar mass = ??. How many molecules do yo have in ?? moles? There are 6.02 x 10^23 molecules in a mole so how many molecules will you have in ?? moles. There are 6 C atoms in 1 molecule so molecules in ?? ...
Saturday, February 20, 2010 at 11:50pm by DrBob222

Chemistry
For the equilibrium below at 400 K, Kc = 7.0. Br2(g) + Cl2(g) reverse reaction arrow 2 BrCl(g) If 0.90 mol of Br2 and 0.90 mol Cl2 are introduced into a 1.0 L container at 400. K, what will be the equilibrium concentration of BrCl?
Tuesday, March 2, 2010 at 6:01pm by James

Abnormal psychology
what are the tenets of pharmacology I found more then three "basic tenets of pharmacology" online: The dose should be no larger than that necessary for the desired effect The drug molecules must get so close to the cellular molecules that the function of the latter is altered ...
Saturday, December 16, 2006 at 7:37am by Carol

biochemistry
I suggest you look in your text, or notes, under "reactions of cyclohexanol" or " reactions of cycloalcohols." For starters, can cyclohexanol be dehydrated with something like H2SO4 to make the alkene without degrading the cyclic ring? If so that will make the hexene. Then ...
Monday, February 18, 2008 at 3:21pm by DrBob222

Chemistry
For the theoretically perfect reaction 2H +O---2HO if you react 300 molecules pf hydrogen and 200 molecules of oxygen, how many oxygen molecules will you have that do not engage in the reaction? Answer 50, 100, 150, or 200?
Thursday, January 31, 2013 at 8:58pm by Help!!

chemistry
The molecules are relatively far apart. In a liquid or a solid the molecules are much closer together. The molecules in a gas are much further apart UNLESS we are talking about LOW LOW temperatures OR HIGH HIGH pressure.
Monday, May 11, 2009 at 9:10pm by DrBob 222

Chem cp
1. How many molecules of fertilizer are there in 55,000 g of fertilizer? 2. How many molecules of ammonia Are there in 987 g of ammonia? 3. How many molecules of gasoline are in 719 g of gasoline 4. How many grams of copper are in 7.97 x 10 26th power atoms of copper II ...
Wednesday, December 11, 2013 at 7:13pm by Mary J. Needs help badly

General Chemistry
moles glucose = 1.5/molar mass glucose = ??. Then 1 mole glucose contains 6.022 x 10^23 molecules. Therefore, ?? moles will contain xx molecules glucose. Then each molecules contains 6 C, 6 O, and 12 H atoms.
Monday, May 17, 2010 at 10:20am by DrBob222

chemistry
The a in van der Waals equation is for the attraction between molecules. Wouldn't you think H2S would have a dipole moment whereas CO2 does not; therefore, there should be a higher attraction between H2S molecules than CO2 molecules.
Sunday, March 14, 2010 at 8:02pm by DrBob222

At what temperature do hydrogen molecules have the
At what temperature do hydrogen molecules have the same rms speed as nitrogen molecules at 90 degree C?
Wednesday, March 31, 2010 at 10:40am by ziddi

Chemistry
Actually, the reaction you're proposing will not occur; however, here is how you work the problem. 2AlCl3 + 3Br2 ==> 2AlBr3 + 3Cl2 mols AlCl3 = grams/molar mass Convert mols AlCl3 to mols Br2 using the coefficients in the balanced equation. Convert mols Br2 to g. g = mols x...
Thursday, March 21, 2013 at 10:58pm by DrBob222

Chemistry
So the water molecules fit in between the alcohol molecules? or do they attach to the structures?
Wednesday, September 15, 2010 at 11:44pm by Ana

Chemistry
So the water molecules fit in between the alcohol molecules? or do they attach to the structures?
Wednesday, September 15, 2010 at 11:49pm by Ana

science
If I have 20 glucose molecules, how many CO2 molecules will they produce?
Sunday, July 25, 2010 at 4:23pm by sheshe

chemistry
How many H2O molecules are formed when 14 methanol molecules react?
Monday, November 8, 2010 at 7:51pm by Kaley

physical science
can water dissolve polar molecules or nonpolar molecules
Thursday, May 19, 2011 at 7:40pm by britt

chemistry
If I have 30 glucose molecules, how many CO2 molecules will that produce?
Thursday, July 14, 2011 at 12:24pm by mike

chemistry
How many CO2 molecules are formed when 10 methanol molecules react?
Wednesday, December 11, 2013 at 8:36pm by andy

Chemistry
Hi GK! Does this mean that there are 4 molecules with the E configuration? All but molecules four are E configurations? Thanks So Much For Your HElp!
Friday, July 3, 2009 at 6:53pm by Perry

biology
Small molecules are combined to form large molecules by the life function of synthesis
Wednesday, October 28, 2009 at 9:02pm by Sara

Chemistry
Use the coefficients in the balanced equation to convert molecules O2 to molecules H2O.
Sunday, November 7, 2010 at 5:43pm by DrBob222

chemistry
1.5x10^7 molecules of hydrogen sulfate. find the number of grams for the molecules listed
Wednesday, February 8, 2012 at 9:00am by kate

Chemistry
There are 6.02E23 molecules in a mole of anything. How many mols N2 do you have in 1.5E23 molecules?
Tuesday, March 12, 2013 at 8:48pm by DrBob222

SCIENCE 1
The van der waals equation incorporates corrections to the ideal gas in order to account for the properties of real gases one of the correcctions accounts for A.attractions between molecules B.the quantum behavior of molecules C.that average kinetic energy is inversely ...
Tuesday, May 11, 2010 at 7:15pm by Dave

CHEMISTRY HELP!
Write K expression for eqn 1. (NOBr)/(NO)(Br2)^1/2 = 5.3. Now square that. (NOBr)^2/(NO)^2(Br2) = 5.3^2 Multiply that equation by Keq for equation #2 which is (NOBr)^2/(N2)(O2) = 2.1 x 10^30 The (NO)^2 cancels and you are left with Keq for the reaction you want and K for the ...
Wednesday, April 27, 2011 at 11:51pm by DrBob222

Chemisty
It is not one question. It is a series of questions. First calculate the total volume of the atmosphere. Second calculate the total number of gas molecules in the atmosphere. Third calculate the number of gas molecules in Caesar's last breat. Fourth calculate what fraction of ...
Thursday, November 1, 2012 at 9:05pm by Garcia

science(chem) Dr.Bob-> need help on this long lab
Just this quick answer to the Br/HSO3^- part. OK. You are adding NaHSO3 until the yellow color is discharged. I'm guessing that the yellow color is the color of the Br2 in the mixture, adding NaHSO3 until the yellow color is discharged would mean then that Br2 was going to Br...
Tuesday, March 11, 2008 at 5:27pm by DrBob222

chem
Use PV = nRT to calculate n for Br2 and convert to grams. Subtract from 4.20 to find grams fluorine. Then convert g bromine to moles. moles = g/molar mass. convert g fluorine to moles same way. Now find the ratio of the elements to each other with the lowest number being 1.00...
Monday, December 13, 2010 at 1:26pm by DrBob222

Science
Living orgnaisms are composed of a special catagory of molecules called enzymes, what are the both molecules?
Tuesday, October 28, 2008 at 5:46pm by Cait;in

biology
Small molecules are combined to form large molecules by the life function of... please help!! URGENT!
Wednesday, October 28, 2009 at 9:02pm by alyssa

Chemistry
There are 6.022 x 10^23 molecules in a (1) mole of methane. So how many molecules will be in only 0.123 moles?
Sunday, November 1, 2009 at 9:37pm by DrBob222

Chemistry
What are three biological molecules that have carbon backbone??? (molecules that are found in the human body)
Monday, January 23, 2012 at 10:24pm by Anonymous

science
3 moles of O2 is produced. use avogadros number 6.02e23 molecules in 1 mole. 1mole = 6.02e23 molecules of O2. how many molecules are present in 3 moles of O2??
Thursday, June 13, 2013 at 4:42am by bonjo

chemistry
You must learn to do these yourself. They are worked the same way I showed you earlier in the evening except there are two factors. One to convert molecules or atoms to moles and the second to change from moles to grams. #molecules x (1 mole/6.02 x 10^23 molecules) x (zz grams...
Monday, March 16, 2009 at 10:50pm by DrBob222

chemistry
How many molecules are in 15.6 g NO2? Answer in units of molecules
Thursday, June 28, 2012 at 10:09am by Real

science
This is the first paragraph in the above link. "Because all objects are made out of molecules it is possible to determine how tightly packed those molecules are. This is known as density. The more tightly packed the molecules of an object, liquid or gas are, the more dense we ...
Wednesday, October 7, 2009 at 5:01pm by Ms. Sue

Science
The three states of substance are solind liquid and gases among these liquid and gases is a fluid which can flowing easily,liquid called incomprasible and gases called compresible e.g. L.P.G. In gas cylinder can compress so it change its phase from gases to liquid and while ...
Friday, January 28, 2011 at 10:22am by Sandip patel

CHEM - PLS help!!
saturated is based on how much you add. color change => bromine is red-brown and when it reacts with a alkene it becomes colorless. basically the reaction you have is a dehydration thus...what product do you form when you have a dehydration? Potassium Permanganate can ...
Monday, February 25, 2008 at 12:20am by ~christina~

Chemistry
If two molecules have the same temperature does it affect their average velocity depending on how heavy the molecules are or not?
Tuesday, October 23, 2007 at 11:26pm by Ana

chemistry
Assuming that there is an adequate supply of phosphorus atoms, how many P2O5 molecules can be made from 20 molecules of O2 ?
Monday, August 23, 2010 at 12:09am by Anonymous

chemistry
How many moles do you have? That is grams/molar mass. Then convert to molecules remembering that there are 6.022E23 molecules in 1 mole.
Wednesday, March 2, 2011 at 4:29pm by DrBob222

chemistry
4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) If a container were to have 16 molecules of NH3 and 16 molecules of O2 initially, how many total molecules (reactants plus products) would be present in the container after this reaction goes to completion? (Use only whole numbers ...
Saturday, October 19, 2013 at 12:52am by Anonymous

chemistry
What do you think? If you have molecules moving very fast, how fast can they mix with air molecules (relative that is), for example? Or, if you have molecules moving VERY SLOW, how fast can they mix with air molecules (a relative time, faster or slower)?
Wednesday, February 27, 2008 at 5:23pm by DrBob222

solutions
How many molecules of glycerol (C3, H8, O3) would be present in 1 L of M glycerol solution? I am thinking it is 6.02 x 10^23 but have also heard conflicting opinions. You don't give the molarity of the C3H8O3. 1 mole of anything contains 6.02 x 10^23 molecules of that "thing...
Sunday, September 17, 2006 at 6:37pm by sarah

entropy change (chem)
determine the entropy change for the displacement reaction represented by the following equation : Cl2 + PbBr2 -> PbCl2 + Br2 Cl2 = 223.066 delta S PbBr2 = 182.7 delta S PbCl2 = 131.3 delta S Br2 = 152.231 delta S
Tuesday, June 8, 2010 at 4:46pm by Capella

Integrated Physics and Chemistry
The internal energy of a material is determined by.. A)its temperature B)the kinetic energy of its molecules C)the potential energy of its molecules D)the combined amount of kinetic and potential energy of its molecules
Tuesday, April 19, 2011 at 10:05am by Ashley

AP Biology
Rank these following molecules from smallest to largest: Glucose, Starch, and Iodine Potassium Iodide Molecules
Tuesday, November 4, 2008 at 9:18pm by Adam

chemistry
there are a number of differently collored molecules present in the spinach. Explain what roles these molecules might serve in photosynthesis
Saturday, February 14, 2009 at 11:28am by Ruth

chem
Your question begs. Combustion, as above, produces the largest amount of carbon dioxide. If only two molecules of methanol were available, then two molecules of carbon dioxide would be produced. However, it is very difficulty to react only two molecules.
Wednesday, October 1, 2008 at 3:07pm by bobpursley

Chemistry
The initial pressure for the compounds involved in the reaction shown were determined to be P(Br2(g)) = 0.5417 atm, P(Cl2(g)) = 0.6962 atm, P(BrCl(g)) = 0.3442 atm. Calculate the value of the equilibrium constant (Kp) at 1000 K if the equilibrium pressure of Cl2(g) was 0.7246 ...
Wednesday, April 7, 2010 at 10:15pm by Amphee

chemistry
we believed that the molecules of a gas move around fairly rapidly, we can use this to explain all of the following EXCEPT why adding more gas increases the pressure. why most of the volume of the gas sample is taken up by the gas molecules. why the gas molecules do not ...
Tuesday, November 5, 2013 at 12:50am by Anonymous

chemistry
Some liquids have enough attractions between molecules to form dimers. (Dimers are molecules formed from the combination of identical molecules, A + A --> A2.) What effect would this have on the experimental molar mass? This was a molar mass lab. Alcohol evaporated in an e-...
Monday, January 23, 2012 at 2:31pm by question

chemistry help
You need to know one piece of information for these problems. That is as follows: There are 6.02 x 10^23 atoms in a mole of atoms or 6.02 x 10^23 molecules in a mole of molecules (actually there are 6.02 x 10^23 in a mole of anything). So in 3.161 x 10^21 molecules of CO2 ...
Sunday, March 8, 2009 at 7:07pm by DrBob222

Chemistry
How many moles NO2 do you have? That is grams/molar mass = 0.155/46.0 = about 0.003 (but you need to do it more accurately). 1 mole NO2 contains how many molecules NO2. 1 mole of NO2 contains 6.022E23 molecules; so how many molecules NO2 do you have? That is 0.003 moles NO2 x...
Tuesday, June 14, 2011 at 1:14pm by DrBob222

Chemistry
A 0.960mol quantity of Br2 is added to a 1.00 L reaction vessel that contains 1.23mol of H2 gas at 1000 K. What are the partial pressures of H2, Br2, and HBr at equilibrium? At 1000 K, Kp=2.1106 and ΔH∘ = -101.7 kJ for the reaction H2(g)+Br2(g)⇌2HBr(g). Dr ...
Monday, February 3, 2014 at 9:58pm by Anonymous

Chemistry
A 0.960mol quantity of Br2 is added to a 1.00 L reaction vessel that contains 1.23mol of H2 gas at 1000 K. What are the partial pressures of H2, Br2, and HBr at equilibrium? At 1000 K, Kp=2.1106 and ΔH∘ = -101.7 kJ for the reaction H2(g)+Br2(g)⇌2HBr(g). Dr ...
Thursday, February 6, 2014 at 8:03pm by Anonymous

chem
Kinetic energy of the molecules increases with increasing temperature; therefore, the attraction of adjacent molecules for each other is less effective.
Monday, July 16, 2012 at 8:56pm by DrBob222

Chemistry
In crystals, molecules of water fill in a crystalline regular matrix, the number of molecules are very definite for each crystall cell.
Sunday, April 7, 2013 at 5:57pm by bobpursley

Chemistry
1 mol of a gas at STP occupies 22.4L and contains 6.02E23 molecules. Convert 3.01E21 molecules to moles and that to L.
Wednesday, April 10, 2013 at 1:47am by DrBob222

AP Chem
The following reaction has Kp = 109 at 25C. 2 NO(g) + Br2(g) 2 NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and the equilibrium partial pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equilibrium.
Sunday, January 8, 2012 at 6:24pm by Bill

Chemisrty
Where can i find drawing of electron dot stuctures for compounds like BR2 and HCN HCN is at the link below. http://dl.clackamas.edu/ch106-01/formulas.htm I couldn't find one for Br2 on line but here is how it will look.   .. .. :Br:Br:   .. .. That is ...
Wednesday, November 29, 2006 at 9:26pm by Lance

Chemistry. PLEASE HELP
If we believed that the molecules of a gas move around fairly rapidly, we can use this to explain all of the following EXCEPT why adding more gas increases the pressure. why most of the volume of the gas sample is taken up by the gas molecules. why the gas molecules do not ...
Tuesday, November 5, 2013 at 5:16pm by Anonymous

Chemistry
OK. You are correct that moles = grams/molar mass AND atomic mass in grams/6.022 x 10^23 = mass of one atom. # molecules in 0.334 g ethane. Convert to moles. moles = grams/molar mass. 0.334/30 = ?? I estimated the 30; you need to confirm it and change if appropriate. We know 1...
Saturday, July 3, 2010 at 2:55pm by DrBob222

Physics
I believe you have omitted the number of molecules in a mole; i.w., 6.02 x 10^23 molecules H2O/mol. Check my thinking.
Sunday, January 13, 2008 at 9:32pm by DrBob222

Chem-Gases
Pressure is caused by molecules striking the walls of the container. The attraction between molecules decreases the chance to strike the wall.
Wednesday, September 19, 2012 at 3:14pm by DrBob222

Chemistry
Could somebody please explain why in gaseous reaction the collision frequency between molecules is far greater than the rate at which molecules react? Thanks! :)
Saturday, April 20, 2013 at 3:20pm by Matt

Chemistry
You have 4.65E22 molecules of P4O10. There are 10 O atoms in 1 molecules so there must be 4.65E22 x 10 = ?? atoms of O. I don't agree with your answer for th number of grams. Since there are 6.022E23 molecules in a mole, 4.65E22 molecules is 4.65E22 x (1 mole/6.022E23) = ?? ...
Saturday, June 25, 2011 at 4:51pm by DrBob222

Chemistry
If the question asked for moles, ok but it asked for molecules. There are 6.022 x 10^23 molecules in a mole so 3.01 x 6.022 x 10^23 = # molecules. I would use 3.01 and not 3 since you have 3 significant figures in 48.2 and 4 in 16.05.
Saturday, July 10, 2010 at 5:34pm by DrBob222

Chemistry
In melting a solid the crystal lattice is broken down and the molecules that were in a fixed position are free to move around. Evaporation takes it one step further. As molecules gain more energy in the liquid state (from heating, the sun, normal vapor pressure, etc), the more...
Wednesday, May 19, 2010 at 2:14pm by DrBob222

Chemistry
The following reaction has Kp = 109 at 25C. 2 NO(g) + Br2(g) 2 NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and the equilibrium partial pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equilibrium.
Sunday, January 8, 2012 at 3:37pm by Ferdinand

chemistry
Your teacher is talking about the conversion factor to convert moles C6H12O6 to moles C. That is how you isolate C from the whole molecule. There are 6.02 x 10^23 molecules (particles) of C6H12O6 in a mole of anything (in this case a mole of C6H12O6). So how many molecules are...
Friday, July 10, 2009 at 12:43pm by DrBob222

Chemistry
. For the gas reaction at low pressure 2NOBr 2NO + Br2 H = +61.1 kJ which of the following statements are true? a) Adding more Br2 shifts reaction to the right b) Removing some NOBr shifts reaction to the left c) Increasing temperature shifts reaction to the right d) ...
Tuesday, September 29, 2009 at 7:19pm by Ava

Chemistry
The M stands for the unknown element; it binds to the Bromine. Bromine has a -1 charge, and there are three, it is highly likely that the element is Aluminum or Boron. 27.765 g MBr3-2.809 g M=24.956 g 3Br- 24.956 g Br* (1 mol Br/239.7 g)= .104 mol Br This is the same number as...
Tuesday, September 27, 2011 at 8:32pm by Corey

CHEMISTRY
1. 26Fe = 1s2 2s2 2p6 3s2 3p6 3d6 4s2 To make the 3+ ion remove the two 4s and one of the 6d electrons. 26Fe^3+ = 1s2 2s2 2p6 3s2 3p6 3d5 2. F^- + Br2 ==> no reaction 2Br^- + Cl2 ==> 2Cl^- + Br2 Follow up with any questions but explain fully what you don't understand.
Friday, September 27, 2013 at 8:10pm by DrBob222

chemistry (oxidation states)
order by increasing oxidation state: Br2 BrO4- CaBr2 BrF3 order: CaBr2 Br2 BrF3 BrO4- is this the right order
Tuesday, October 12, 2010 at 8:36pm by Sarah

Chemistry-EQUILIBRIUM
I'm working on this equilibrium homework problem and I'll post all my work. Can you help me please? I'm a little stuck especially on the polynomial. If iodine vapor and bromine vapor are reacted in 15o degree C they form idodine monobromide gas. At 150 degrees C the value of ...
Wednesday, March 19, 2008 at 7:08pm by Karen

chemistry
Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product mixture be? number of NH3 molecules number of N2 ...
Friday, January 23, 2009 at 6:35pm by lyne

biology
POLARITY COHESION SURFACE TENSION CAPILLARY ACTION UNIVERSAL SOLVENT ADHESION match definitions Because water molecules stick together, they form a thin film on the surface of pools of water, on which some organisms can walk Water molecules are able to move against the force ...
Wednesday, November 20, 2013 at 7:20pm by anonymous

orgo
For the first part of your post, try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=which+acid%2C+maleic+or+fumaric+acid+appears+to+be+more+reactive+to+bromine+addition%3F For the second part, try here: http://search.yahoo.com/search?fr=mcafee&p=how+...
Tuesday, November 2, 2010 at 8:47am by SraJMcGin

chemistry
1 mole of lactic acid will contain 6.022 x 10^23 molecules of lactic acid; therefore, 1.5 moles will contain xxxx molecules. The formula of lactic acid is C3H6O3 so there are three times as many C atoms as there are molecules of lactic acid.
Sunday, October 10, 2010 at 8:59pm by DrBob222

chemistry
I'm assuming from the statement about whole numbers that we don't "count" parts of a molecule. What's the limiting reagent(LR)? 16 NH3 x (4 NO/4 NH3) = 16 x 4/4 = 16 molecules NO formed if we had 16 molecules NH3 and all the O2 we needed. 16 O2 x (4 NO/5 O2) = 16 x 4/5 = 12.8 ...
Saturday, October 19, 2013 at 12:52am by DrBob222

chemistry
. For the gas reaction at low pressure 2NOBr ↔ 2NO + Br2 ΔH = +61.1 kJ which of the following statements are true? a) Adding more Br2 shifts reaction to the right b) Removing some NOBr shifts reaction to the left c) Increasing temperature shifts reaction to the ...
Tuesday, September 29, 2009 at 5:20pm by Ava

Chemistry, Thermodynamics
I have a couple questions: 1. When analyzing which has greater entropy, do you look at the larger number or the smaller number? 2. What two things must be met for a reaction to be spontaneous under ALL temperature conditions? 3. If heat is in the products, the equation is ...
Friday, August 10, 2007 at 9:30pm by Taasha

Chem
There are 6.022E23 molecules C6H12O6 in 1 mole (180 g); therefore, in 5.23 there will be 6.022E23 x (5.23/180) = ?? molecules Then there are 6 atoms of O in 1 molecule so atoms O will be 6 times ?? molecules.
Thursday, June 2, 2011 at 12:45pm by DrBob222

Chemistry
It takes bromine vapor 4.73 min to effuse through a pinhole of a container. How long will it take CH4 gas to effuse under the same temperature and pressure? Okay so, I tried using Graham's law for this problem. Rate A was 4.73. Molar Mass of bromine was 79.904 and the molar ...
Monday, May 17, 2010 at 12:19am by Kyo

Chemistry
Use the data given below to construct a Born - Haber cycle to determine the electron affinity of Br? DH(kJ) K(s) → K(g) 89 K(g) → K⁺(g) + e⁻ 419 Br2(l) → 2 Br(g) 193 K(s) + 1/2 Br2(g) → KBr (s) -394 KBr(s) → K⁺(g) + Br⁻(g...
Saturday, December 8, 2012 at 8:30pm by Rob

chem
Yes, it should and I goofed. I guess I just don't know what a formula unit is. I work in moles and molecules. Apparently this problem is asking for the number of molecules. Here is how you do the practice problem, followed by the other problem. 0.18 mg = 0.00018 grams but in ...
Wednesday, November 10, 2010 at 4:18pm by DrBob222

chemistry
which of the molecules listed below can form hydrogen bonds? for which of the molecules would dispersion forces be the only intermolecular force? give reasons for you answers.
Tuesday, April 27, 2010 at 6:14pm by sam

Chemistry
Based on the balanced equation, C2H4 + 3O2 → 2CO2 + 2H2O calculate the molecules of H2O formed when 135 molecules of O2 are reacted.
Sunday, November 7, 2010 at 5:43pm by Marissa

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>

Search
Members