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April 24, 2014

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

Number of results: 2,372

chemistry
Ca + Br2 --> CaBr2 its synthesis and the reason the reaction happens is stable electron configuration but i dont understand why. Responses chemistry - DrBob222, Wednesday, January 21, 2009 at 10:06pm Synthesis because it's two elements combining to form a single product. ...
Wednesday, January 21, 2009 at 11:01pm by lyne

chemistry
How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by mass bromine. Would it be CaBr2? This is what I did... 20g Ca * 20 mol Ca/801.56g Ca = .499 mol Ca 80g Br * 80 mol Br/6392.32g Br = 1.001 mol Br 1....
Thursday, October 29, 2009 at 3:11pm by Jamie Marie

CHEM
How many molecules of ammonia are produced from: 2.58x10^-4g of Hydrogen? My balanced equation: 3H2 + N2 = 2NH3 I worked this question as: mol of H = 2.58x10^-4g/1.00794g/mol= 2.559676x10^-4 mol mol of NH3 produced = 2x2.559676x10^-4mol/3mol NH3 = 1.706450701x10^-4 Molecules...
Monday, October 15, 2007 at 1:21pm by K

biology
Food that is consumed often enters the body in the form of large organic molecules, such as proteins and starches. Prior to entering cells, however, these large molecules must be broken down into smaller molecules. For example, proteins are digested into _______ prior to ...
Wednesday, March 21, 2012 at 10:28pm by Monique

Chemistry
Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2 partial pressure lowers the...
Sunday, February 12, 2012 at 11:35am by Hannah

chemistry
Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will see how more extensive tables of relative strengths of oxidizing and reducing agents have been developed. Procedure: ...
Saturday, April 12, 2008 at 1:37pm by Joseph

CHEMISTRY
Cracking decane, under different conditions, produces two molecules. One of these molecules is ethene. What is the formula of the other product? Sugest a use for this product? Thanks- ETH + OCT= DEC
Wednesday, April 25, 2007 at 2:30pm by Jessica10

Chemistry
Select all cases in which the units comprising the solid are best classified as molecules. CrSe C2H2 CS2 C2H4 Cs2S Cl2O7 None Help please? I think they're all molecules
Sunday, January 24, 2010 at 7:58am by Angel

chemistry
A solution of 114 mL of 0.190 molecules KOH is mixed with a solution of 200 mL of 0.220 molecules NiSO4. a. write a balanced equation for the reaction that occurs. identify all phases in answer
Sunday, October 2, 2011 at 11:08pm by susie

Chemistry
A solution of 114 mL of 0.160 molecules KOH is mixed with a solution of 300 mL of 0.250 molecules NiSO4. a. write a balanced equation for the reaction that occurs. identify all phases in answer
Monday, October 3, 2011 at 1:25pm by Rheagan

Biology
Cells absorbing sugar or other small molecules from their surroundings is an example of A. diffusion B.osmosis C. exocytosis D.endocytosis I think it is either C or D because they both have to do with the transportation of molecules in and out of cells.
Friday, December 30, 2011 at 12:43pm by tim

Chem
Is BrCL3 Bromine tricholoride? What is the name of SnCl3?
Thursday, November 15, 2007 at 9:40am by Anonymous

chemistry
at STP, chlorine is a gas but bromine is a liquid. why is this?
Thursday, February 4, 2010 at 9:00pm by lelia

Chemistry
How many grams of bromine can be obtained by the decomposition of 92.0 of MgBr2?
Wednesday, April 27, 2011 at 5:05pm by Mel

Chemistry
Which electron configuration best represents bromine?
Monday, November 14, 2011 at 5:02pm by Anonymous

chemistry
What does 0.540g of bromine and 0.858g of iodine yield
Thursday, November 8, 2012 at 1:19pm by elayna

chemistry
The pressure in a 5.75 L container of 48.0 g of bromine gas at 100.0C is
Tuesday, November 5, 2013 at 12:49am by Anonymous

Chemistry
is the molar mass value of a volatile liquid, such as ethanol, high or small? Usually small, but there are exceptions. The ability to be volatile means that the attractive forces between molecules in the liquid and vapor have to be small, so non polar molecules are the rule. ...
Saturday, January 20, 2007 at 8:36pm by michelle

AP Chemistry
So I have the reaction 2HBr(g) <--> H2(g)+Br2(g) I'm supposed to find the equilibrium constant, K, using free energy (G) values. The values in my textbook for G of H2 and Br2 were zero, and the value for HBr(g) was -53.5. So, to find delta G I did products - reactants ...
Monday, April 8, 2013 at 1:56pm by Casey

Science
How do cells recycle molecules after apoptosis? Which molecules do they recycle and why?
Monday, January 14, 2008 at 7:16pm by Michelle

Chemistry
Why do bromine and iodide have similar chemical properties?
Wednesday, October 22, 2008 at 10:35pm by Rachel

college
whats the mech for this: (Z)-2,5-dimethyl-hex-3-ene and bromine
Thursday, February 4, 2010 at 5:34am by Anonymous

O Chem
whats the mech for this: (E)-2,5-dimethyl-hex-3-ene and bromine
Thursday, February 4, 2010 at 5:35am by A

Science (Chemisty)
Why do you never find liquid bromine in your neighborhood?
Monday, October 25, 2010 at 8:25pm by Jeremiah

chemistry
what is the equation of the reaction between potassium sulphite and bromine
Monday, July 11, 2011 at 1:02pm by chan

Chemistry
1. When a potassium atom reacts with a bromine atom, the bromine atom will a) lose 1 electron and form a positive ion b) lose 2 electrons and form a positive ion c) gain 1 electron and form a negative ion d) gain 2 electrons and form a negative ion I know its either C/D but im...
Thursday, October 21, 2010 at 9:55pm by Lisa

Chemistry
What is the mass (in kg) of 3.2 L of Br2?
Monday, August 17, 2009 at 7:02pm by Emmy

science
1. Identify the phase or phases of matter (solids, liquids, and gases) that apply to each statement. More than one phase of matter may apply to each statement. a. Molecules do not move around, but vibrate in place b. Has volume but no particular shape c. Flows d. Molecules ...
Tuesday, January 29, 2013 at 6:35pm by raul

chemistry
in regard to the reverse freezing process of water(when it expands) and others molecules contract.. is it only water that does this or is it all the hydrogen bonded molecules?? ( N,O,F) NH3, H20 anf FH...my science teacher doesn't know the answer and i'd really like to know
Tuesday, October 13, 2009 at 12:01pm by Luke

college chemistry
When ethane reacts with oxygen to form carbon dioxide and water. When 10 molecules of ethane react with 20 molecules of oxygen, what is the composition of the FINAL mixture?
Thursday, July 12, 2012 at 3:29pm by maribel

chemistry
1) What is the chemical formula for the compound formed between thallium(iii) and bromine? 2) What is the chemical formula for the compound formed between thallium(iii) and sulfur? HINT!: each compound wil be neutral. What is the charge of the thallium(iii) ion? What is the ...
Thursday, November 7, 2013 at 12:22am by Alex

chemistry
Why are all diatomic molecules diatomic molecules linear, regardless of the number of valence electron pairs on the atom? i dont understand this question what is meant by linear?
Wednesday, April 8, 2009 at 9:20pm by lyne

Chemistry
At a certain temperature and pressure, chlorine molecules have an average velocity of 0.0410 m/s. What is the average velocity of sulfur dioxide molecules under the same conditions?
Thursday, May 13, 2010 at 6:37pm by Kayla

Biology
Which is NOT a major function of proteins? A. Provides cell structure B. Stores energy for the cell C. Functions as regulator molecules in cellular activity D. Functions as carrier molecules is it D
Wednesday, July 10, 2013 at 3:38pm by Amy

Science
Calculate the density of bromine if 586g of the substance occupies 188mL
Thursday, October 16, 2008 at 8:17pm by Thao

chem
for the equation: propane + bromine how do I know on which carbon the Br would attatch itself to.
Friday, March 13, 2009 at 1:24am by Lena

chemistry
Why must bromine be added slowly to trans-cinnamic acid?
Saturday, February 27, 2010 at 1:04pm by Rebecca

Chemistry
What is the balanced ionic equation between bromine and sodium bisulfite??? thanks
Monday, March 1, 2010 at 10:30am by niki

Science
What compounds can be formed by combinations of potassium, lithium, chlorine, and/or bromine?
Tuesday, March 30, 2010 at 6:59pm by Emmy

chemistry
write balanced equation of the reaction of bromine and sodium thiosulfate
Monday, March 21, 2011 at 3:32am by swas

Chemistry
How many grams of bromine liquid are needed to make 6 moles of KBr?
Monday, August 29, 2011 at 10:30am by pheope

chemist
why a white precipitate is formed when aqeous bromine is added to aniline
Thursday, September 8, 2011 at 9:04am by nasihah

science
bromine and mercury are the only 2 liquids on the periodic table, could you predict this? why or why not?
Monday, September 10, 2012 at 10:43pm by matt

chemistry
"Write equations for the half-reactions that occur at the anode and cathode for the electrolysis of the following aqueous solution: CuBr2(aq)" Possible oxidation reactions: 1. 2Br- -> Br2 + 2e- = -1.09 2. 2H2O -> O2 + 4H+ + 4e- = -1.23 Possible reduction reactions: 1. ...
Wednesday, April 2, 2014 at 8:08pm by Kate

science
Given that 6.20 x 10^23 ethanol molecules have a mass of 46.04g calculate the number of ethanol molecules in a film of ethanol that is 3.08 mm by 0.0015 mm. Assume the density of ethanol is 0.790 g/mL please helppp
Tuesday, August 28, 2012 at 3:06pm by anonymous

equilibrium
when Br2 (5.7mol) and Cl2 (.0934mol/L)in a 61 L vessel at 604'C are allowed to come to equlibrium the mixture contains .0523 mol/L of BrCl. What concentration of Cl2 is reacted? - i know how to find the Kc... Br2 + Cl2 ==> 2BrCl 0.0523 mol/L BrCl at equilibrium in a 61 L ...
Tuesday, April 10, 2007 at 1:14pm by christine

chemistry
Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble. Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will ...
Sunday, April 13, 2008 at 1:52pm by Joseph

chemistry
Hi I sent this question a few days ago but did not get it answered I think it may have been mixed up in the jumble. Purpose: The purpose of this lab exercise is to construct a table of relative strengths of oxidizing and reducing agents. By completing this exercise, you will ...
Sunday, April 13, 2008 at 11:25pm by Joseph

chemistry
when there is 3.0 x 10^20 molecules in a closed container, the pressure is 1.2 atm. Using a pumper 1.5 x 10^20 more molecules are added to the container. what is the new pressure?
Sunday, January 10, 2010 at 6:53pm by bob

Chemistry
At2 26.3C, F2 molecules have a certain value of rms speed. At what temperature would the rms speed of O2 molecules be the same?
Sunday, October 16, 2011 at 5:58pm by Justin

Chemistry
can someone check my answers thank you. 1)How many grams of hydrochloric acid are required to react completely with 4.30 grams of zinc? answer: 0.1328 g H2 2)How many molecules of gas will be produced? answer: 0.395x10^23 molecules
Thursday, January 10, 2008 at 5:23am by Mike

chemistry
Choose the groups of molecules below in which all the molecules have a net dipole moment. a. SiHCl3, O2, H2O b. HF, H2ClCH2, H2O c. HF, CH3Cl, H2O d. CCl4, HCl, NH3 e. HF, H2O, N2
Thursday, January 24, 2008 at 7:38pm by janet

Thermal Physics, Kinetic Theory of Gases
Oxygen (O2) has a molar mass of 32 g/mol. (e) Suppose an oxygen molecule traveling at this speed bounces back and forth between opposite sides of a cubical vessel 0.10 m on a side. Find the average force it exerts on one of the walls of the container. (Assume that the molecule...
Thursday, November 1, 2012 at 4:05pm by Help!!

Chemisty
Enrico Fermi was a famous physicist who liked to pose what are now known as Fermi problems in which several assumptions are made in order to make a seemingly impossible estimate. One example of a Fermi problem is "Caesar's last breath" which estimates that you, right now, are ...
Thursday, November 1, 2012 at 9:05pm by Garcia

Chemistry
If the average velocity of O2 molecules at STP is 3.4*10^3 meters/sec, what is the average velocity of H2 molecules at the same temperature and pressure?
Monday, December 5, 2011 at 7:40pm by Carissa

Chemistry 2
What is the predominant intermolecular force responsible for the dissolution of the hydrophilic end of soap in water? Using dashed lines, illustrate where the intermolecular force occurs between atoms in adjacent molecules? Lone pair electrons have been omitted in the ...
Sunday, June 30, 2013 at 6:10pm by Angela

CHEMISTRY
What is the effect of cyclohexane as the solvent in the electrophilic aromatic substitution of acetanilide by bromine?
Saturday, January 19, 2008 at 4:58pm by smiley

Chemistry
Whats the balanced net ionic equation for Chlorine reduced by Bromine?
Wednesday, February 13, 2008 at 5:31pm by Jason

chemistry
0.540 g of bromine combine with 0.858 g of iodine to yield a compound X.Its % composition is
Wednesday, May 16, 2012 at 5:23am by rainee

chemistry
which of the ff are gases at 50 degrees celcius bromine, mercury, propane, radon, silver
Tuesday, October 2, 2012 at 9:04pm by linda

Easy Chemistry
is 2 molecules of fluorine the same as 2 fluorine molecules? if so then how/why
Tuesday, May 21, 2013 at 2:09pm by Timofey

Chemistry
Balance equation c2h3cl + br2
Thursday, January 3, 2013 at 3:40pm by Cris

Chem
A compound that dissolves in water to form an aqueous solution that is an excellent conductor of electricity is always present in the solution as -covalent molecules -acid molecule -base molecule -salt molecules -ions
Wednesday, October 24, 2007 at 8:43pm by Taylor

physics
. Consider a large number, N(0) , molecules contained in a volume V (0) . Assume that there is no correlation between the locations of the molecules (ideal gas). Do not use the partition function in this problem. (a) Calculate the probability P (V; N) that an arbitrary region ...
Monday, June 13, 2011 at 5:35pm by esmat

chemistry help !!!!!!!!!!!!!!!!
complete the following paragraph relating to the enzyme,b -galactosidase .this enzyme hydrolyses the disaccharide lactose to constituent monosaccharides ,galactose and glucose ,drag and drop the approprite words into the correct space. the enzyme ,B-galactosidase is added to a...
Saturday, February 2, 2013 at 5:10pm by john

chemistry help !!!!!!!!!!!!!!!!
complete the following paragraph relating to the enzyme,b -galactosidase .this enzyme hydrolyses the disaccharide lactose to constituent monosaccharides ,galactose and glucose ,drag and drop the approprite words into the correct space. the enzyme ,B-galactosidase is added to a...
Saturday, February 2, 2013 at 5:11pm by john

chemistry
Based on the balanced equation 2I2O5 + 10NO → 5N2O4 + 2I2 calculate the number of excess reagent units remaining when 188 I2O5 molecules and 850 NO molecules react? do i start with a new balance equation in order to solve it
Wednesday, February 10, 2010 at 2:03am by eng

chemistry
suppose you have two 1-L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion through a pinhole leak?
Wednesday, January 26, 2011 at 8:58pm by meg

Chemistry
How does the 3D structure of SP3 bonds of Carbon, Oxygen and Nitrogen cause them to form polar molecules? How does the three dimensional structure of SP3 bonds of Carbon, Oxygen and Nitrogen cause them to form polar or non-polar molecules? The answer must include a 3d diagram ...
Sunday, January 23, 2011 at 5:16am by Bam

chemistry
On this problem I keep getting the wrong answer. I am subtracting the initial concentration of Cl2 by the equilibrium concentration then using the difference to subtract for the rest using the mole ratios. Then i used the keq constant equation of concentration of products over...
Thursday, April 8, 2010 at 9:05pm by andy

ChEMistry
a binary compound between germanium and bromine would have a formula like: (a)
Tuesday, November 7, 2006 at 6:55pm by kooldude

chemistry
what is the balanced equation for the reaction that takes place between bromine and sodium iodide
Tuesday, July 29, 2008 at 11:15am by natasha

Chemistry
Write a balanced redox reaction between mercury and bromine to form Hg2^2+.
Monday, December 6, 2010 at 2:53pm by Ari

physical science
what is the freezing point depression when 153g of bromine is added to 1000g of benzene?
Thursday, August 18, 2011 at 9:08pm by melanie

Chemistry
How much 1,2-dibromocyclohexane should be obtained by adding bromine in carbon tetrachloride to 1g of cyclohexene
Tuesday, October 4, 2011 at 11:12pm by john

Organic Chemistry
What is the mechanism for the removal of bromine from dibromocholesterol using Zinc and acetic acid?
Wednesday, November 9, 2011 at 4:31pm by Tom

chemistry
How much energy will it take to vaporize 45 g of liquid bromine (Br 2) if the ΔH of formation of Br 2 (g) is 31 kJ/mole?
Wednesday, September 12, 2012 at 2:30am by =D

chemistry
8.09% carbon, 0.34% hydrogen, 10.78% oxygen, and 80.78% bromine its similar to the last one i posted empirical formulas
Saturday, February 23, 2013 at 7:10pm by tula

phy. chem
start from the Maxwell-Boltzmann distribution and derive an expression for the most probable speed of a gas of molecules at a temperature T. Go on t demonstrate the validity of the equipartition conclusion that the average translational kinetic energy of molecules free to move...
Sunday, January 23, 2011 at 2:26am by bun

CHEMISTRY HELP! D;
1.Br2(g) + ___H2O(l) + ___SO2(g) ---> ___HBr(aq) + ___H2SO4(aq)
Thursday, August 29, 2013 at 7:27pm by Unknown

chemistry
Identify common properties of the molecules in a compound with a liquid crystal phase contain ions contain aromatic groups contain polar groups have long molecules
Saturday, October 11, 2008 at 10:02pm by Anonymous

chemistry
are these right? How many atoms are there in 1.3x10^22 molecules NO2? atoms=(1.3x10^22 molecules NO2) x (2atoms/1molecule) = 2.6x10^22 atoms NO2 A 5.0g sample of O2 is in a container at STP. How many atoms of oxygen are in the container? atoms = (5.0g O2) x (1mol/32g)x (6....
Sunday, December 14, 2008 at 11:08pm by s

college Chemistry
It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
Thursday, November 4, 2010 at 9:59pm by alexis

college Chemistry
It requires 945.0 kJ/mol to break N2 molecules into atoms. Calculate the maximum wavelength of light that will still break these molecules apart. I tried converting the energy to kj and using E=hc/wavelength but that didn't give me the right answer...
Thursday, November 4, 2010 at 10:13pm by alexis

Chemistry
Predict how the entropy of the substance is affected in the following processes: a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k) b)Br2 (l, 1 bar, 25 degree C) --> Br2 (g, 1 bar, 25 degree C) C)Fe (s, 1 bar, 250 degree C)--> Fe(s, 1 bar, 25 degree C) will entropy either ...
Sunday, April 20, 2014 at 12:47am by Alexis

chemistry
how do you synthesize benzoic acid from p-bromotoluene? what reagents would you add to remove the bromine group?
Sunday, February 21, 2010 at 5:39am by szs

organic chemistry
Give the product of the structure formed when 2-methyl-2-butene reacts with bromine in water
Friday, December 2, 2011 at 7:35pm by Mary

chemistry
what possible chemicals can test the presence of limonene except bromine water and potassium permanganate?
Wednesday, February 6, 2013 at 2:21am by marlo

Science
Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must ...
Thursday, February 20, 2014 at 2:42pm by Anonymous

Science
Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must ...
Thursday, February 20, 2014 at 9:58pm by Anonymous

Science
Which of the following must be true about the structures of axons and muscle cells in order for nerve impulses to stimulate muscle contraction? a- Axons and muscle cells must both have structures that make and secrete the same small molecules. b- axons and muscle cells must ...
Friday, February 21, 2014 at 2:17pm by Anonymous

11th grade
is Br2(L)+Cl2(g)--->BrCl(g) a balanced equation?
Friday, December 3, 2010 at 12:07am by youu

chemistry
the shape and nonding in a Br2 molecule is best described as
Wednesday, February 9, 2011 at 2:52pm by ashley

chemistry
what is Kc for 2NOBr-->2NO+Br2 when the temperature is 1000K and the Kc is 1.3x10^-2
Sunday, February 26, 2012 at 8:15pm by Anonymous

chemistry
what is free energy for h2+br2=2hbr at 25 degrees celcius
Sunday, October 28, 2012 at 1:34pm by lenz

chemistry
1. in which group is bromine found(on the periodic table)? 2. what is the name of its chemical family? 3. in which group is magnesium found? 4. what is the name of its chemical family? 5. in which group is potassium found? 6. what is the name of its chemical family? You can ...
Sunday, February 25, 2007 at 11:31pm by michelle

DrBob222
These are the other equations I've balanced. I need help with one. AgNO3 + K2Cr2O7 --> double replacement AgNO3 + K2Cr2O7 --> AgCr2O7 + K2NO3 Please tell me if I've balanced these right. Br2 + NiI3 --> single replacement, element is a non-metal Br2 + NiI3 --> I3 + ...
Thursday, July 15, 2010 at 11:35pm by Derrick

Chemistry
Suppose a compound could point in any of two directions in the solid and still have the same energy. How many molecules would there be if the total entropy of a solid sample of this compound was 8.174e-9J/K I used S= klnW and got lnW = 5.92e14. How do i get the number of ...
Saturday, April 30, 2011 at 9:34am by Jude

chemistry
Why is gas a chemical reaction not detectable by sight? Explain? my answer is because the atoms or molecules of matter in the gaseous state move freely among each other, and are, in most instances, packed more loosely than the molecules of the same substance in the solid or ...
Thursday, October 4, 2012 at 4:47pm by Lea

chem1 WORD PROBLEM!!
6. how many grams are in 4 moles of Be (OH)3? 7.How many atoms are in 4 moles of C6H12O6? 8.how many moles are in 12.04x10 23 to the power molecules of hamburgers? 9. how many molecules are in grams of Helium gas (He2)? hint:convert then moles then moecules
Thursday, December 6, 2012 at 6:51pm by tyneisha

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