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What are hydrogen bond-donor and acceptor in acetic acid molecules?
3 answers
asked by
me
748 views
Two identical ballons are filled, one w/ argon the other w/ oxygen gas at the same temp. If the oxygen ballon leaks at the rate
2 answers
asked by
Tom
489 views
6FeO3----->4Fe304+02 DELTA H=+ 392kj
If 2.83 g of Fe2O3 decomposed according to the above reaction , how many kj of heat would be
1 answer
asked by
lauren
390 views
How is the number of moles of NaOH affected at the equivalence point of the solution?
1 answer
asked by
me
305 views
True/false
1. will addding a strong acid (HNO3) to a solution that is 0.010M in Ag(NH3)2(^+) will tend to dissociate the complex
1 answer
asked by
millie
668 views
how do you know which roman numeral to place between the cation and the anion of a metal/non-metal substance?
1 answer
asked by
mike
330 views
how do you know which roman numeral to place between the cation and the anion of a metal-nonmetal substance?
1 answer
asked by
mike
343 views
DrBob222, thank you for answering my question(s). Sorry for asking repeatedly, I am new to this "posting" stuff. I thought I was
3 answers
asked by
mike
440 views
Why do we have to remove air bubbles in a chemical reaction?
1 answer
asked by
sue
327 views
a 22.5g sample of (NH4)2CO3 (ammonium carbonate) contains _____ moles of ammonium ions?
4 answers
asked by
ashlee
3,073 views
. Give two reasons why graphite (carbon) electrodes are used in electrolysis.
5. You have 2 compounds called X and Y. X melts at
1 answer
asked by
Nabiha
1,054 views
Ammonia reacts with oxygen to form nitrogen dioxide and water according to the following equation: 4NH3(g) + 7O2(g) ® 4NO2(g) +
4 answers
asked by
mich
4,139 views
Determine the number of moles of MgO that form from the reaction of 4.4 moles of O2 in the following unbalanced reaction:
Mg(s) +
1 answer
asked by
a
404 views
You wish to prepare an aqueous solution of glycerol, C3H5(OH)3, in which the mole fraction of the solute is 0.093. How many
3 answers
asked by
mike
1,137 views
If Tums is added to 50.0 of 0.600 , how many grams of gas are produced?
1 answer
asked by
Anonymous
314 views
balance 1-butanol + oxygen=carbon dioxide+water how many grams of carbon dioxide and water are produced when 130.6 grams of
2 answers
asked by
lynn
1,080 views
is F2 +2 ion diamagnetic or paramagnetic? I think its diamagnetic because it loses 2 electrons and it still has no unpaired
3 answers
asked by
Kaylie
1,857 views
1.Aqueous solutions of sodium and copper (II) chloride are mixed together. which statement is correct?
a. both NaCl and CuS will
2 answers
asked by
audrianna
753 views
what's the electron domain and molecular geometry of SO3 with a charge of -2?
electron domain= tetrahedral molecular= trigonal
3 answers
asked by
Anonymous
2,632 views
How does a gas differ from a liquid with respect to the following property:
Ability to mix with other substances of the same
2 answers
asked by
asdf
618 views
. What effect would vapor condensation in the neck of the 15-mL Beral-type pipets have on the reported molar mass? How large an
3 answers
asked by
3
1,131 views
Suppose a solution contains a concentration of 1.0x10^-4M PbSO4 (Ksp=1.8x10^-8). Which of the following terms describes this
3 answers
asked by
dude
778 views
The Ksp of PbI2 is 8.7x10^-9. Find the solubility of lead(II) iodide on mol/L.
a. 1.3x10^-3 b. 9.3x10^-9 c. 6.6x10^-5 d.
3 answers
asked by
dude
1,132 views
If 5.35 g of KMnO4 are dissolved in a liter of solution, what is the normality of the solution?
1 answer
asked by
desperate
409 views
Carbon monoxide is detected in air samples by its reaction with diiodine pentoxide to form carbon dioxide and elemental iodine:
3 answers
asked by
desperate
815 views
The hydrogen emission spectrum has four series (or sets) of lines named Balmer, Brackett, Paschen, and Lyman. Indicate the
4 answers
asked by
Sunny
969 views
An element has ccp packing with a face-centered cubic unit cell. Its density is 1540 kg/m3 and the unit cell volume is 1.73 x
3 answers
asked by
Sunny
554 views
are all gases less dense than liquid water?
3 answers
asked by
Anonymous
349 views
what does the heating curve of ethanol look like? im really confused about this...
2 answers
asked by
samuel
613 views
Species of arsenic found in kriking water include (AsO3)3-, (CH3)2(AsO2)2-, (CH3)AsO3 2-, and (AsO4)3-. Pure water containing no
2 answers
asked by
bun
595 views
why do elements in the same family generally have similar properties?
3 answers
asked by
samuel
3,773 views
why does fluorine have a higher ionization energy than iodine?
2 answers
asked by
samuel
1,435 views
Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out
1 answer
asked by
rc
1,272 views
how would you find molecular mass when given only density? (1.25g/L)
1 answer
asked by
Anonymous
328 views
Suppose that a reaction calls for 1.25 moles of ethanol,C2H6O (mw= 46.07 g/mol d=0.7893g/cm^3. what volume of ethanol shold one
1 answer
asked by
sam
401 views
a. One can use pH differences to separate basic substances from non-basic ones. Which of the following would be suitable for use
1 answer
asked by
lisa
385 views
Suppose you need to extract an organic substance S from water into ether, where the distribution constant Kdist = [S]org/[S]aq
2 answers
asked by
lisa
484 views
What is the chemical formula of fertilizer 13-13-13. Pleas tell me. Thanks a lot
1 answer
asked by
bun
333 views
.070g caffeine dissolved in 4 mL water. caffeine is extracted from aqueous solution 3 times with 2mL portions of methylene
3 answers
asked by
j
1,286 views
.070g caffeine dissolved in 4 mL water. caffeine is extracted from aqueous solution 3 times with 2mL portions of methylene
4 answers
asked by
j
1,253 views
Elemental Sulfur can be formed through the combustion of Hydrogen Sulfide (found in Methane gas) give in equation H2 S +O--->S +
3 answers
asked by
nycole
562 views
Elemental Sulfur can be formed through the combustion of Hydrogen Sulfide (found in Methane gas) give in equation H2S+O--->S +
3 answers
asked by
nycole
517 views
thank you for your help
but how would i be able to find that out
1 answer
asked by
nycole
335 views
The decomposition of ammonium hydrogen sulfide that is shown below is an endothermic process.
NH4HS(s) reverse reaction arrow
3 answers
asked by
Anonymous
1,574 views
do esterification reactions have high or low yields? and why is this?
2 answers
asked by
chrissy
994 views
do esterification reactions have high or low yields? and why is this?
1 answer
asked by
chrissy
355 views
do esterification reactions have high or low yields? and why is this?
2 answers
asked by
chrissy
826 views
if you cann get 5candies for 7dollars, then how many candies will 33 dollars get you?
3 answers
asked by
jaime
320 views
The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ.
How much heat, in kilojoules, is evolved when
3 answers
asked by
Joseph
1,706 views
im working on a lab in chemistry called measuring energy changes :Calorimetry
how to you determine the molar latent heat of
2 answers
asked by
jess
535 views
Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm.
Using a phase diagram,
6 answers
asked by
anonymous
777 views
Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm.
Using a phase diagram,
4 answers
asked by
joe
1,509 views
Given:
3H2(g) + N2(g) 2NH3(g) If the reaction starts with 0.500 mol of H2, how many atoms of hydrogen in the compound NH3 would
3 answers
asked by
kp
538 views
How much heat is required to raise the temperature of 200 g CH3OH from 20 to 30 degrees and then vaporize it at 30 degrees. The
6 answers
asked by
joseph
577 views
Benzaldehyde, C6H5CHO}, has a normal boiling point of 179.0 C and a critical point at 422 C and 45.9 atm.
Using a phase diagram,
2 answers
asked by
joseph
520 views
Potassium chloride crystallizes with the rock salt structure. When bathed in X-rays, the layers of atoms corresponding to the
1 answer
asked by
meherpreet
463 views
Sorbic acid, HC6H702 (pKa=4.77), is widely used in the food industry as a preservative. For example, its potassium salt
2 answers
asked by
Rav
1,082 views
What must be the molarity of an aqueous solution of NH3 if it is 4.2% ionized?
3 answers
asked by
Rav
924 views
A mixture of gas contains 1.25g of N2, 1.25g of O2, and 1.25g of He in 2.50 L container at 25 C. Find the partial pressure of N2
3 answers
asked by
Caroline
520 views
Which elements have a higher ionization energy than sodium?
1 answer
asked by
Anonymous
377 views
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst
2 answers
asked by
Anonymous
658 views
If 0.120 moles of water are produced in the reaction
H+(aq)+OH-(aq)-->H2O(l) delta H=-56.2 kJ/mol I have tried this problem a ton
1 answer
asked by
Mellisa
416 views
Calculate the pH of the following salt solutions?
0.1 M HBr 0.1 M CaI2 0.1 BaF2 Kb (F-)=1.4x10^-11
5 answers
asked by
simi
578 views
a buffer is made by adding 150 ml of .595M BaF2 and 0f .500M of HF solution.
calculate the pH of this buffer system calculate the
7 answers
asked by
simi
777 views
Consider the titration of 20 mL of .105M Butric Acid HBut, with .125M sodium Hydroxide?
calculate the pH before titration
7 answers
asked by
simi
821 views
calculate the pH for a solution that is made by combining 125ml of 6.0*10-2 M hydroflouric aid with 50 ml of .12 M sodium
5 answers
asked by
Nikki
488 views
Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an
2 answers
asked by
Anonymous
1,042 views
What is the volume of 0.25M PMSF & volume of 14.3M 2-mercaptoethanol needed in 25 mL of 20 mM sodium phosphate?
MW of sodium
3 answers
asked by
Estelle
522 views
Releasing oxygen gas, A physical change?
1 answer
asked by
Patti
335 views
How any orbits 4p subshell?
1 answer
asked by
Patti
336 views
why do S+carvone (caraway oil) and R-carvone (spearamint oil) have the same IR spectra. I know they are enantiomers/mirror
1 answer
asked by
jen
391 views
Hexane, a component of gasoline, releases more energy per mole when it combusts than does nitroglycerine when it explosively
1 answer
asked by
Anonymous
422 views
from the equation : c3h8+5O2=3CO2+4H20
HOW MANY GRAMS OF H2O CAN BE PRODUCED FROM THE REACTION OF 8.5X10^22 MOLECULES PROPANE
4 answers
asked by
marina
2,036 views
is 2-methyl-2-pentene capable of forming cis/trans isomers
2 answers
asked by
rashid
509 views
What volumes of 0.53 M HNO2 and 0.46 M NaNO2 must be mixed to prepare 1.00 L of a solution buffered at pH = 3.55?
HNO2
3 answers
asked by
jacky
585 views
why does the temperature decrease as the internal energy of a system decrease?
1 answer
asked by
kim p
401 views
What three things does a balanced equation show you
3 answers
asked by
wendy
407 views
How/ why are insoluble subtances soluble?
1 answer
asked by
koleh
303 views
In order for a precipitation reaction to occur the product must be insoluble. However in an experiment we formed precipitates of
2 answers
asked by
kohel
879 views
if you were invoolved in an acid rain monitoring project with several other samplers,why would it be important that all of your
1 answer
asked by
alissa
344 views
calculate delta H for N2O+4H2>N2+4H2O
2 answers
asked by
john
532 views
What volume of 0.200 M Fe(NO3)3 is needed to make 50ml of o.oo200M Fe(NO3)3?
3 answers
asked by
amber
610 views
classify each of the following as a lewis acid or base:
Cl- BeCl2 B(CH3)3 P(Ch3)3 Cl- is an acid right? i'm not sure i understand
4 answers
asked by
Katie
1,738 views
when doing a paper chromatography lab, my class used a solvent with a neutral pH, which my teacher said would help separate the
2 answers
asked by
chrissy
558 views
why are the MP and BP of deuterium higher than those of protium?
1 answer
asked by
kim p
281 views
Can someone show me the structural formula (lewis diagram) for ethene???
Please
4 answers
asked by
Stacey
373 views
Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide.
Sb2S3(s) + 3 Fe(s) 2
2 answers
asked by
caroline
547 views
How many moles of chlorine are needed to react with 3.30 moles of aluminum?
4 answers
asked by
caroline
520 views
is HC2H3O2 a strong or weak acid
1 answer
asked by
Stephany
396 views
what would the chemical equation look like for each IUPAC name 4-phenyl-2-pentyne b. 2-phenyl-3-pentyne c. 3-phenyl-4-pentyne d.
2 answers
asked by
bryan
643 views
what is the major product of this reaction CH2=CH-CH2CH3+H2O H2SO4
3 answers
asked by
bryan
1,455 views
Carbon monooxide CO is product of incomplete combustion of fuel. Find the volume that 42g of CO gas occupies at STP.
2 answers
asked by
Bobby
717 views
3. Determine the density of chlorine gas at 22C and 1.00 atm pressure.
3 answers
asked by
Courtney
528 views
Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the
2 answers
asked by
Anonymous
821 views
i need help
1 answer
asked by
amy
198 views
i need help
while mercury is very useful in barometers, mercury vapor is toxic. given that mercury has Hvapp=56.9kj/mol and its
2 answers
asked by
amy
1,289 views
how many mL of .100 M of acetic acid and .100 M of NaOH, would be need to make the volume 1.0 liters and have a pH7.00 if
3 answers
asked by
phil
372 views
if the reaction type is Synthesis then what would be the product of..
Fe subscript 2 O subscript 3 + H subscript 2 O
1 answer
asked by
Sienna
405 views
what degree celcius is read when pressure is 100mmHg?
1 answer
asked by
kim
317 views
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an
2 answers
asked by
Adam
503 views
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