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April 18, 2014

Search: is NH4+ polar or nonpolar

Number of results: 2,422

Biology
These are true and false questions and I want to make sure that I got them right. 1. A water molecule is held together by two single polar covalent bonds. False 2. Because oxygen has a greater electronegativity than hydrogen, water molecules are polar with two partial negative...
Thursday, September 8, 2011 at 2:54pm by Cady

chem
16.5 g (NH4)2SO4 in 145.0 mL solution = 16.5 g/145 mL = xx g/mL and use this below. Concn of diluted solution is xx g/mL x 10.50 mL/(57.70+10.50) = yy g (NH4)2SO4/mL. How is the concentration to be measured? g/mL is what the yy is above. (SO4^=) = same as (NH4)2SO4 = zz g/mL...
Saturday, November 3, 2007 at 11:32pm by DrBob222

chemistry
Do you mean KNOW? You know because "like dissolves like." Polar and ionic compounds dissolve in polar solvents; non-polar molecules dissolve in non-polar solvents.
Friday, January 16, 2009 at 10:34am by DrBob222

Chemistry
15.6 g (NH4)2SO4 = ?? moles. moles = 15.6/molar mass (NH4)2SO4. M (NH4)2SO4 = moles/0.100 L for the stock solution = xx M Technically you can't go from this solution to the final solution BECAUSE 10 mL of the stock is ADDED to 52 mL water and the final volume may or may not be...
Tuesday, May 4, 2010 at 1:33pm by DrBob222

Physical Science
The covalent bonds in molecules of elements are always nonpolar because for example the carbon oxygen double bonds are directly opposite of each other and there is an equal pull on the electrons from opposite directions, so the pull cancels out and the molecule as a whole is ...
Thursday, May 15, 2008 at 10:08pm by april

chemistry
1. Electronegativity differences give us a sense of a bond's polarity. Which of the following bonds would you expect to be most nonpolar: C-O, C-Si, C-B, or C-S? Answer my first anwer was C-O C-B C-S my answer C-Si can you explain a little further on what they mean by most ...
Monday, February 18, 2013 at 10:29pm by luck

chemistry
At the beginning of the titration (before any HI is added), you have pure 0.1500 M NH3(aq). NH3 + HOH ==> NH4^+ + OH^- Kb = (NH4^+)(OH^-)/(NH3(g) Set up an ICE chart and calculate OH^-, the pOH and pH from that. At the equivalence point, what do you have. NH3 + HCl ==> ...
Sunday, April 6, 2008 at 2:08am by DrBob222

CHEM
If the four F atoms are in the equatorial positions and the two Cl atoms are axial, all polar bonds cancel. This is what it said when I had tried "always polar"...I had selected the wrong answer. So...it is either then, as I had originally thought: "always non-polar" or "#3......
Monday, November 26, 2007 at 9:23pm by K

Chemistry
Look up the electronegativity of H and F, for example. H is 2.1, F is 4.0, subtract them to get a difference of 1.9 so HF is polar. Strictly speaking, there are no non-polar bonds in those compounds listed. The difference in electronegativity must be zero to have a non-polar ...
Tuesday, December 11, 2007 at 8:22pm by DrBob222

bio
The cell membrane is a highly selective barrier that controls the movement of substances in and out of the cell. In fact, polar molecules are unable to go across unless A. they are enclosed in water-filled vesicles. B. they pass through channels in the cell membrane. C. they ...
Wednesday, March 21, 2012 at 10:37pm by Monique

chemistry
It depends upon what you have in the column. If it is polar, then non-polar compounds elute first. If non-polar, then polar compounds elute first.
Tuesday, September 1, 2009 at 2:26pm by DrBob222

Chem 2
Frist write out what is given: HNO2 ⇌ H+ + NO2- Ka = 0.00045 = [H+]*[NO2-]/[HNO2] and: NH3 + H2O ⇌ NH4+ + OH- Kb = 0.000018 = [NH4+]*[OH-]/[NH3] What is asked for is the K value for: HNO2 + NH3 ⇌ NH4+ + NO2- K = [NH4+]*[NO2-]/{ [HNO2]*[NH3] } = { [NH4+]*[OH...
Thursday, February 28, 2008 at 10:30pm by noneed2no

chemistry
To be polar, a molecule must have both of the following: a. bonds that are polar AND b. the molecule must NOT be symmetrical. Electronegativity is the way to go to determine if a bond is polar.
Tuesday, May 5, 2009 at 10:42pm by DrBob222

chemistry
Since the substrate is silica gel (SiO2), that is a polar substrate and the more polar solvent should move slower than the less polar solvent.
Monday, September 28, 2009 at 8:42pm by DrBob222

Chemistry
moles (NH4)2CO3 = grams/molar mass. moles NH4 will be twice moles (NH4)2CO3.
Tuesday, June 1, 2010 at 1:44am by DrBob222

Org. Chem.
Slightly polar. 1-butanol is more polar than 1-octanol because the chain is longer in 1-octanol (more organic character) and less polar.
Monday, September 14, 2009 at 10:12pm by DrBob222

Chemistry
A 0.08425 g sample of gas occupies 10.0-mL at 292.5 K and 1.10 atm. Upon further analysis, the compound is found to be 13.068% C and 86.932% Br. What is the molecular formula of the compound? Identify the geometry around each carbon atom. a)trigonal pyramidal b)bent c)...
Saturday, November 17, 2012 at 6:15am by Nikki

Chemistry
Generally, like dissolves like. CsI is polar. H2O is polar. yes. CH3OH has OH. H2O has OH. yes. I think C6H6 (is that benzene?) will dissolve in C6H12 (is that hexene). Both are non-polar solvents.
Sunday, September 19, 2010 at 6:16pm by DrBob222

Chemistry
Which substance ( HI or Xe ) has the higher boiling point? Its HI but chose one of the most appropriate reason. 1. Both substances are nonpolar but the higher boiling includes hydrogen bonding 2. Both substances are nonpolar but the higher boiling is more polarizable 3. The ...
Saturday, October 12, 2013 at 11:11pm by ss01

Chemistry
A molecule must satisfy two criteria to be polar. a)it must have polar bonds. b)it must NOT be symmetrical in three dimensions. CCl4 has C-Cl bonds that differ in electronegativity; therefore, each of the C-Cl bonds is polar. However, the CCl4 molecule, as a whole, is ...
Thursday, October 29, 2009 at 12:54am by DrBob222

chemistry
moles (NH4)2CO3 = 11.86/78.048 = about 0.15 Convert moles (NH4)2CO3 to moles CO2. 0.15 mols (NH4)2CO3 x (1 mol CO2/1 mol (NH4)2CO3 = 0.15 x (1/1) = etc.
Friday, April 16, 2010 at 4:12pm by DrBob222

CHEMISTRY
and ionizes to NH4^+ + OH^-. In fact, NH3 + HOH ==> NH4^+ + OH^-
Wednesday, October 17, 2012 at 9:45am by DrBob222

Chemistry
For binary compounds, a difference in electronegativity leads to a polar compound. For example, CsF. Cs as EN of about 0.8 or so and F has EN of about 4.0. The difference is >3.0 and this is an ionic (polar) compound. For molecules, two criteria must be satisfied. a. There ...
Thursday, April 15, 2010 at 5:23pm by DrBob222

Chemistry
I believe you are missing a point here. While it is true that H2O is polar, NaCl is an ionic crystal and VERY polar, at least in my book. I see a lot of answers on the Internet (both ways) but it must be polar since it is an ionic compound.
Thursday, December 2, 2010 at 6:39pm by DrBob222

Chemistry
The HH equation is much easier but here is the other. (NH3) = 0.40M (NH4Cl) = (NH4^+) = (Cl^-) = mols/L = 0.1mol/0.500L = 0.2M ...........NH3 + HOH ==> NH4^+ + OH^- I........0.40..........0.20.......0 C..........-x.............x.......x E.........0.40-x.......9,.20+x....x ...
Tuesday, April 1, 2014 at 10:50pm by DrBob222

chemistry
Determine the number of NH4+ ions in a 145 g sample of (NH4)2SO4.
Monday, November 1, 2010 at 4:49pm by angela

Chemistry
Which substance ( HBr or HF ) has the higher boiling point? Its HF but chose one of the most appropriate reason. 1. Both substances are nonpolar but the higher boiling includes hydrogen bonding 2. Both substances are nonpolar but the higher boiling is more polarizable 3. The ...
Saturday, October 12, 2013 at 11:11pm by ss01

Chemistry-Experiment
I don't know what nitrite acid is so I can't help you with the second part. The first part is this. Mg^2+ + 2OH^- ==> Mg(OH)2. 1) Ksp = (Mg^2+)(OH^-) NH3 + H2O ==> NH4^+ + OH^- 2) Kb = (NH4^+)(OH^-)/(NH3) [note: my NH3 takes the place of your NH4OH] 3) NH4Cl ==> NH4...
Friday, March 30, 2012 at 6:50pm by DrBob222

chemistry
How many mols (NH4)2CO3 do you have? That's grams/molar mass. # NH4^+ = 2x that.
Sunday, September 16, 2012 at 1:28pm by DrBob222

Chemistry
i worked out the mass percentage of N in each and this is what i got NH3=82.25% NH4NO3=35% (NH4)2HPO4=21.4% KNO3=13.85% (NH4)H2PO4=12.17% (NH4)2SO4=11.85% i put in order and still get it wrong -__- Total mass of N x100%/(molar mass)
Sunday, January 16, 2011 at 1:37am by Anonymous

Chemistry
.........NH4^+ + H2O ==> H3O^+ + NH3 I......0.05...............0........0 C........-x...............x........x E......0.05-x..............x.......x ka(for NH4^+) = (Kw/Kb for NH3) = (H3O^+)(NH3)/(NH4^+) Substitute and solve for x = (H3O^+), convert to pH.
Saturday, March 9, 2013 at 11:08am by DrBob222

Chemistry
28.42g/164.1= .17318 mol Ca(NO3)2 29.6g/37.042=.79909 mol (NH4)F (1mol Ca(NO3)2 /.17318) x (2mol (NH4)F/x)=.34636 (2 mol (NH4)F/.79909)x(1 mol Ca(NO3)2/x)=.399545 so (NH4)F (.34636) is limiting reagent. now I'm stuck. Not sure what you mean about subtracting moles from initial...
Monday, October 26, 2009 at 7:36pm by Brittany

chemistry
I can't make spaces so I will use dashes to separate columns. ----polar solvent--- for example water solute--p--n/p-- soluble(Y/N) NaCl----x-- n/a-- Y KCl ----x-- n/a-- Y NaHCO3--x-- n/a -- Y fat-----n/a--x---- N The above is an example of a able that could be made for one of ...
Friday, January 16, 2009 at 10:40pm by DrBob222

chem
Do you mean (NH4)3PO4. If so, I would call the NH4^+ to PO4^-3 bond ionic with N-H, and P-O bonds covalent.
Saturday, September 25, 2010 at 8:47pm by DrBob222

Chemistry
What is the pH of a buffer system that contains 0.18M NH4+ and 0.14M NH3? The pKa of NH4+ is 9.25.
Thursday, April 18, 2013 at 12:02am by Aaron

chemistry
CH4 is not. CF4 is not CH3F is. All three molecules are tetrahedral shapes. The C-H bonds are slightly polar BUT the tetrahedral shape is symmetrical and the individual bond polarities cancel so the overall polarity is zero for the molecule. Same argument for CF4. However, for...
Tuesday, February 25, 2014 at 8:18pm by DrBob222

Chemistry
Would this be a correct general statement about the type of solute dissolves in non-polar solvents: Compounds that are non-polar will dissolve in non-polar solvents. Do you have any tips on how I could elaborate on this?
Tuesday, November 6, 2007 at 8:00pm by Marty

Chem
The truth is zero.zero is non polar, however, life is on a continium. Most classify .5 or less as "non-polar", however, there is still an electronegativity difference, and there is a polar moment. For other purposes, some use .3 and call that difference "non-polar". I would go...
Wednesday, July 8, 2009 at 8:42pm by bobpursley

Solid State Chemistry
Which molecule ( KI or LiF ) has the higher boiling point? Select the single most important reason below to justify your choice should have the higher melting point Both molecules are nonpolar but the higher melting includes hydrogen bonding Both molecules are nonpolar but the...
Friday, December 20, 2013 at 3:07pm by KS

science
You don't really need calculations to answer this. A discussion of the role of soap/detergents in dissolving (nonpolar) oil in (polar) water can be found at http://www.elmhurst.edu/~chm/vchembook/554soap.html
Friday, January 16, 2009 at 12:48pm by drwls

ap chemistry
Answer: In order to have a dipole moment (i.e., to be a polar molecule) a molecule must have polar bonds and must have a molecular geometry which is not symmetrical (i.e., one in which the vector sum of the bond dipoles  0). In CH2F2 the C-F and C-H bonds are polar and...
Thursday, December 7, 2006 at 4:55pm by Shawn

chemistry
my teacher told me that polar bonds have a difference in elecronegativities of .4-2.1 is that the only way to find if a bond is polar? also how would you find out if the MOLECULE is polar or not? - i think i remember my teacher saying something about dipole moments...
Tuesday, May 5, 2009 at 10:42pm by lyne

complex numbers!
-2-2i in polar form = 2.8 cis 2.35?? -3+4i polar form = 5 cis 2.2??? 1 - sqaureroot(3i) polar form = 2 cis 1.04?? What is cis? never mind I have the right answers. polar form z = r (cos O + i sin O ) is also written in an abbreviated form z = r cis O cos + sin = cis
Friday, November 3, 2006 at 6:38pm by kevin

Chemistry!!!
The more polar compounds will "stick" to the polar TLC surface longer; therefore, the non-polar compounds will move up the TLC plate faster than the polar substituents will. 2. A PURE compound will move as one "spot" up the plate. Impurities will give a second and/or third ...
Monday, July 1, 2013 at 10:33am by DrBob222

Chemistry
MgCO3 One has a 2 charge and the other has a -2 charge. they both neutralize. For the (NH4)2 SO4 NH4 has a +1 charge and SO4 has a -2 charge As you can see from (NH4)2 SO4 The 2 outside that paranthesis makes the charge a positive 2 which then makes the compound neutralized. ...
Monday, March 30, 2009 at 6:51pm by Chopsticks

Methylene chloride
Question: A sample was placed on a chromatography column. Methylene chloride was used as the eluting solvent. All of the components eluted off the column, but no separation was observed. What must have been happening during this experiment? How would you change the experiment ...
Sunday, October 22, 2006 at 11:23pm by Sheryl

Chemistry
(NH4)2S + CuSO4 ==> CuS + (NH4)2SO4 This is a precipitation type reaction or you may be thinking of double replacement.
Monday, April 22, 2013 at 3:07am by DrBob222

Chemistry
Is it possible for the dispersion forces in a particular substance to be stronger than the hydrogen bonding forces in another substance? I get that in general, LD is weaker than H-bonding, but LD does exist is both polar and nonpolar substances and what if it occurred between ...
Saturday, December 1, 2007 at 1:39pm by Vardaman

Chemistry
(NH4)2SO4 ==> 2NH4^+ + SO4^-2 0.5 mole (NH4)2SO4 must produce 1. mole NH4^+ (2 x 0.5 = 1.)and 0.5 mole SO4^-2
Wednesday, April 6, 2011 at 7:36pm by DrBob222

Chemistry - solubility
it's based on intermolecular forces too. br and o are both nonpolar so it's all like "why would one be more soluable than the other?" but it's because br has more dispersion forces since it has more electrons. so br is a little bit more polarish (although not technically polar...
Tuesday, January 2, 2007 at 7:21pm by mackenzie

Chemistry
NH3 + H2O ==> NH4^+ + OH^- Kb = (NH4^+)(OH^-)/(NH3) You know Kb and (NH4^+). (OH^-) comes from the solubility of Mg(OH)2 (that is OH^- will be twice the solubility of Mg(OH)2. (NH3) is the only unknown. Solve for that.
Thursday, November 18, 2010 at 7:15pm by DrBob222

science
first, write the chemical reaction: NH3 + H2SO4 -> (NH4)2SO4 then we balance this: 2NH3 + H2SO4 -> (NH4)2SO4 then we find the weight of NH3 and (NH4)2SO4. We can do this by getting each atomic mass of the element in the chemical formula, and add them. It can be found on ...
Wednesday, May 23, 2012 at 9:53pm by Jai

chemistry
Which compound is more polar: water or dicloromethane? I know that water is a polar molecule but I dont know the polarity of dicloromethane or how to figure out which one is more polar than the other?
Monday, February 20, 2012 at 2:26pm by lara

Chemistry(Please help)
For the Ka of NH4^+^ I did 1.0e-14/1.83-5 = 5.55e-10. What do I do with this value? So for (NH3)(H3O) / NH4 it would be x^2/0.144-x
Saturday, April 7, 2012 at 9:16pm by Hannah

Maths - Polar Coordinate Systems
I've recieved an assignment to investigate the polar coordinate system compared to the cartesian one. Theres a question that asks you to investigate into how to convert polar coordinates into cartesian. From my text book, I know in Polar coordinates, that if (d,) is a point, ...
Saturday, October 25, 2008 at 10:25pm by BM

CHemistry
The most polar would elute last. I think benzoic acid is the most polar. The least polar would elute first. I wonder if that isn't octanol.
Sunday, May 2, 2010 at 3:13pm by DrBob222

Chemistry
If the reaction is mole for mole, then y0u have the salt at the end of the reaction. Hydrolyze the salt (react it with water) and go from there. NH4Cl ==> NH4^+ | Cl^- The NH4^+ hydrolyzes. NH4^+ + HOH ==> NH3 + H3O^+ Set up and ICE chart and solve for H3O^+ and from ...
Sunday, February 15, 2009 at 5:19pm by DrBob222

Math HELP PLEASE! QUICK!
1.Write the rectangular equation in polar form. (x 4)2 + y2 = 16 2.Write the equation 2x + 6y = 7 in polar form. 3.Graph the polar equation 2 = r cos(theta 20). 4. Write the polar equation in rectangular form. r = 12 cos
Tuesday, February 26, 2013 at 7:20pm by Beccaboo

Pre-calculus HELP PLASE !
1.Write the rectangular equation in polar form. (x 4)2 + y2 = 16 2.Write the equation 2x + 6y = 7 in polar form. 3.Graph the polar equation 2 = r cos(theta 20). 4. Write the polar equation in rectangular form. r = 12 cos
Tuesday, February 26, 2013 at 7:20pm by Beccaboo

CHEMESTRY- POLARITY
Look up the electronegativity of each atom, subtract the smaller from the larger, then arrange from high to low value to give most polar to least polar. NN should be the smallest (at zero). CO should be the most polar and NO should be in the middle. Check me out.
Friday, February 12, 2010 at 10:20pm by DrBob222

Chemistry
Acetic acid is a polar molecule and can form hydrogen bonds with molecules. Therefore, it has a high soulubility in water. Yet acetic acid is also soluble in benzene (C6H6), a nonpolar solvent that lacks the ability to form hydrogen bonds. A solution of 3.8g of CH2COOH in 80 g...
Monday, October 18, 2010 at 5:46pm by Karly

Naphthalene
Question: You are about to purify an impure sample of naphthalene by column chromatography. What solvent should you use to elute the sample? My answer: Naphthalene is very nonpolar so a very nonpolar solvent like hexane should be used.
Sunday, October 22, 2006 at 11:28pm by Sheryl

Chem
You were going great guns--you just stopped too soon. NH4^+ + HOH ==> NH3 + H3O^+ So your Ka is correct at 5.55 x 10^-10 Ka = (NH3)(H3O^+)/(NH4^+) You have the (H3O^+) and (NH3) is the same as (H3O^+). solve for (NH4^+), the only unknown in the equation.
Tuesday, April 6, 2010 at 11:12pm by DrBob222

chemistry
Write the equation and balance NO2^- ==> NH4^+ electron change actually is all you need and oxidation state goes from +3 in NO2^- to -3 in NH4^+ for 6e change. Therefore, it will take 1 faraday to convert 1/6 mole NO2^- to NH4^+. So it will take ______ F to convert 1 mole.
Saturday, June 12, 2010 at 12:13am by DrBob222

Chemistry to DrBob
Dr. bob could you please check this work cus i can't seem to get it right the first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ???? grams. Fe(NH4)2(...
Friday, April 18, 2008 at 1:25am by Amy

chem
Both are ionic therefore both are polar bonds and would dissolve in a polar solvent like H2O. I would expect both to be somewhat soluble in methanol and ethanol. They are polar but not as much as H2O.
Tuesday, September 18, 2012 at 11:33pm by DrBob222

chemistry
The first step of the synthesis is described by the reaction below. When 1.000 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq) FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq) + 4 H2O(l)
Monday, June 29, 2009 at 3:14pm by evelin

Science
oil is a covalent compound. Alcohol is a covalent compound with a polar end (OH). The polar end will be attracted by water molecules, which are polar.
Wednesday, March 25, 2009 at 7:31pm by bobpursley

chemistry
NH3 + H2O ==> NH4^+ + OH^ Kb = (NH4^+)(OH^-)/(NH3) Convert pH to pOH, then to (OH^-), substitute into Kb. Also substitute into Kb what you want the (NH4^+) to be and solve for (NH3).
Wednesday, April 13, 2011 at 7:42am by DrBob222

chemistry 1c
The first step of the synthesis is described by the reaction below. When 2.000 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq) FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq) + 4 H2O(l)
Wednesday, July 2, 2008 at 5:37pm by here

chemistry
I didn't have any luck on the net either but I would think neither would be very soluble since both have some polarity. However, 1-hexanol should be less polar than ethanol, shouldn't it, therefore I would think the less polar solute would be more soluble in a non-polar ...
Monday, January 19, 2009 at 12:26am by DrBob222

Science
Ignore Don's answer. Sra's answer is ok. A polar substance is more soluble in a polar solvent. A non-polar substance is more soluble in a non-polar solvent. A generalized statement is, "Like dissolves like."
Monday, January 5, 2009 at 6:07pm by DrBob222

Chemistry
The first step of the synthesis is described by the reaction below. When 2.000 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ______ grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq)--> FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq...
Tuesday, April 15, 2008 at 4:14pm by Lindsey

Chemistry
The first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is____ grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq)----> FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq...
Wednesday, April 16, 2008 at 10:04pm by Cindy

science
Ionic compounds consist of positively or negatively charged atoms (like Na+ or Cl-) or ionic molecular groups like NH4+ and NO3-, that are joined together by electrostatic attraction. In a polar compound, electrons are shared between atoms in the molecule, but they are not ...
Wednesday, December 5, 2007 at 5:41am by drwls

Org. Chem.
If benzophenone is nonpolar, how come it is only partially soluble in hexane (nonpolar)? Also, can H bonding occur? Can H bonding occur between benzophenone and methyl alcohol? malonic acid and methyl alcohol? biphenyl and methyl alcohol? Please explain.
Monday, September 14, 2009 at 5:14pm by Chelsea

org. chem.
If benzophenone is nonpolar, how come it is only partially soluble in hexane (nonpolar)? Also, can H bonding occur? Can H bonding occur between benzophenone and methyl alcohol? malonic acid and methyl alcohol? biphenyl and methyl alcohol? Please explain.
Monday, September 14, 2009 at 5:48pm by Chelsea

ANOTHER SCIENCE
Consider the following reaction that has reached equilibrium: NH3 (aq) + C2H4O2 (aq) ! NH4+ (aq) + C2H3O2- (aq) ∆H = -102.1 kJ a. What will happen to the concentration of NH4+ (aq) if the temperature is raised? b. What will happen to the concentration of NH4+ (aq) if the...
Thursday, June 30, 2011 at 11:16pm by Abby

Chemistry
The purpose of a buffer is to resist a change in pH. When an acid is added, one of the materials (the base--in this case NH3) neutralizes the acid forming MORE of the salt. So NH4^+ increases and NH3 decreases. When a base is added, it reacts with the acid (in this case NH4...
Monday, April 26, 2010 at 8:49pm by DrBob222

chemistry
There is no NH4OH although some people still use that as the product of NH3 + H2O. It has been shown not to exist. NH4NO3 (NH4)2CO3 NH4HSO4 (NH4)3PO4
Thursday, September 27, 2012 at 12:47pm by DrBob222

Chemistry
I forgot to add that my best guess is c. I think because water is a polar molecule and hydrocarbons are non polar molecules. and I think hydrocarbons are only soluble in other non polar molecules. ??
Tuesday, July 27, 2010 at 3:46pm by Anonymous

chemistry
The first step of the synthesis is described by the reaction below. When 1.200 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4 , the theoretical yield of FeC2O42H2O is grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq)-> FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq) + 4 ...
Sunday, April 20, 2008 at 1:03am by david

Chemistry
The first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4 , the theoretical yield of FeC2O42H2O is _______grams. Fe(NH4)2(SO4)26H2O(s) + H2C2O4(aq) FeC2O42H2O(s) + (NH4)2SO4(aq) + H2SO4(aq) + 4 ...
Monday, August 11, 2008 at 6:42pm by Damien Patel

Chemistry
CH4 is not a polar molecule due to its symmetry. NH3 is polar.
Saturday, March 1, 2008 at 10:34am by DrBob222

PHYSICS
IS HYDROGEN GAS AND CARBON DIOXIDE POLAR OR NON POLAR?
Saturday, December 13, 2008 at 8:50pm by brooklinn

CHEMESTRY- POLARITY
how can you arrange these bonds from most polar to least polar O-C N-N N-O
Friday, February 12, 2010 at 10:20pm by Anonymous

Chemistry
Is BCI3 polar or non polar ,identify the negative ends
Monday, October 10, 2011 at 2:32pm by Danny

CHEM
Distinguish between polar bonds and polar molecules.
Monday, September 21, 2009 at 10:13am by ANON

POLARITY
how can you arrange these bonds from most polar to least polar O-C N-N N-O
Friday, February 12, 2010 at 9:53pm by Anonymous

CHEM
how can you tell if a molecule is polar or non-polar? plz help!
Wednesday, February 17, 2010 at 8:43pm by Anonymous

Chemistry
so N20 is polar SO2 is polar and N3- is ionic ?
Saturday, April 10, 2010 at 7:35pm by Johannie

chemistry
how do you tell whether or not a compound is polar or non-polar?
Monday, December 2, 2013 at 9:16pm by anonymous

chemistry
how do you tell whether or not a compound is polar or non-polar?
Monday, December 2, 2013 at 9:24pm by anonymous

chemistry
how do you tell whether or not a compound is polar or non-polar?
Monday, December 2, 2013 at 9:25pm by anonymous

Chemistry
ethanol is polar while cyclohexane is nonpolar. http://www.school-for-champions.com/chemistry/polar_molecules.htm
Sunday, September 19, 2010 at 6:05pm by TutorCat

chemistry
Do polar and non-polar substances mix? how to write a lab report on it.
Friday, January 16, 2009 at 10:40pm by Peter

Chemistry
glucose=polar with the O-H groups and hydrogen bondings hexane=non-polar
Monday, August 9, 2010 at 5:41pm by Anonymous

Chemistry - check answers
Yes, but you show know this is correct from F-F = 4.0-4.0 = 0 O-F = 4.0-3.5 = 0.5 H-F = 4.0-2.1 = 1.9 F-F is least polar H-F is most polar.
Saturday, March 22, 2014 at 8:22pm by DrBob222

geography
Which polar region contains more land? Well, since the northern polar region is floating on top of the Artic ice sheet and has no land under it. My answer is the Southern polar region has more land. It has Antartica. Correct?
Wednesday, September 29, 2010 at 6:43pm by Reed

REACTION STEPS AND MECHANISM FOR [CO(NH4)3CO3]NO3
(NH4)2CO3 + NH3+[CO(OH2)6](NO3)2+H2O2
Monday, October 11, 2010 at 11:08am by ALEXELBIANCONERO

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