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January 27, 2015

Search: "balanced equation for the reaction of the oxygen and the magnesium" including their physical states

Number of results: 46,271

chemistry help plz
what are the values of a,b,c and d in the balanced chemical equation aFe^2+(aq)+bAl(s)=cFe(s)+dAl^3+(aq) where a,b,c and d are the lowest possible whole numbers? a= b= c= d=
January 4, 2013 by lena

chemistry
interpret the following balanced equation into Particles, Moles, Mass: 2Al+3CuSO4== AL2(SO4)3+ 3Cu
April 24, 2013 by Amber

chemistry
a) show a balanced neutralization reaction for each. b) Determine how many moles of base are needed to neutralize 2 mles of acid of these reactions. Can you show me the work,using the mole ratio ?? HNO3 + KOH -- H2SO4 + NaOH --
August 16, 2010 by Kelsey

Chemistry
1) The formation of water is represented by the following equation : 2H2(g) + O2(g) -> 2H2O(g) a.What is the limiting reactant if 4 mol of oxygen reacts with 16 mol of hydrogen? b.What amount (in moles) of water is produced in this reaction? 2) . Sliver nitrate, AgNO3(aq),...
December 19, 2012 by IMPO QUESTION

Chemistry - Equations
I am a student in the ninth grade and I need help with the following problems because I do not understand how to do them. I appreciate your help and thanks once again. 7. in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio of moles of oxygen used to moles of CO2? 9...
January 31, 2008 by Theodore

chemistry
For the reaction H2(g) + I2(g) 2 HI(g), you have the initial concentrations [H2] = 0.15 and [I2] = 0.05. Keq for the reaction at this temperature is 4.5 x 10-6. Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium ...
May 4, 2012 by Anonymous

chemistry
1 gram of C3H8 gas and 1 gram of O2 gas are delivered to a metal sphere with a fixed volume of 1 L. After the two gases are introduced, the two reactants are ignited and burned according to the balanced reaction C3H8(g)+5O2(g)changes to3CO2(g)+4H2O(g) After reaction, the ...
December 5, 2011 by laura

chemistry
1 gram of C3H8 gas and 1 gram of O2 gas are delivered to a metal sphere with a fixed volume of 1 L. After the two gases are introduced, the two reactants are ignited and burned according to the balanced reaction: C3H8(g)+5O2(g)changes to 3CO2(g)+4H2O(g) After reaction, the ...
December 6, 2011 by laura

chem
Calculate the number of liters of hydrogen, measured at STP, that can be produced from the reaction of 0.155 mol of aluminum according to the following unbalanced chemical reaction equation. i got .193 L of H2 but it was wrong. i only have one submition left!
December 9, 2010 by hannah

caluclus homework help
(1) A toy truck travels at a rate of 0.5t ft/sec after t seconds of travel (so after 6 seconds the truck is traveling 3 ft/sec). a) Graph the speed of the truck vs. time for 0<t<10. b) Find the distance the truck has traveled in the first t seconds for 0<t<10. Call...
January 20, 2008 by Leslie

Science
Chlorine gas was bubbled through a warm concentrated solution of potassium hydroxide. -write an equation of reaction that took place -describe how pure crystals potassium chlorate (5) may be obtained from the reaction above
July 30, 2011 by Piom

AP Chemistry
C2H2(g) + 2H2(g) --> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following table: C2H2(g) 226.7 kj/mol C2H6(g) -84.7 kj/mol [the values are the change in enthalpy] a. write the equation for the heat formation of ...
September 27, 2009 by Anonymous

Chemistry
Explain why iron corrodes more quickly in seawater than in freshwater. I'm getting conflicting answers from searching on Google; is it because the corrosion of iron is a redox reaction, which involves a transfer of electrons, and therefore this transfer of electrons would be ...
May 7, 2013 by a Canadian

Chemistry II
17.5 mL of oxygen gas were collected at room temperature 22C and 100.2 kPa of atmospheric pressure. a. How many moles of oxygen gas were produced? b.What is the molar volume of the oxygen gas at the conditions in the laboratory? note, how do you change kpa to atm? sorry about ...
September 14, 2009 by pasely

Physical Education
The possibility "What if we designed a school that acknowledged the physical changes that these students are going through." Discuss what that possibility might look like in a physical education setting
January 25, 2009 by Sarah

12 chem
Q. When 300ml of Ticl4(gas), at 48 degrees Celcius and a pressure of 105.3 kPa, is reactes with 0.4320 g of magnesium, 0.4016 g of titanium is produces. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction. -The answer for ...
February 4, 2009 by wiz

chemistry grade 12
Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction - The answer for ...
February 4, 2009 by kite

chemistry
How does an ionic bond form between zinc and oxygen? Zn has two electrons in its outside shell and wants to lose those two. Oxygen has six electrons in its outside shell and wants eight; therefore, oxygen takes the two electrons form Zn making the Zn with a +2 charge and ...
November 20, 2006 by carter

Physical Science
2. Including a full-wave rectifier in an AC circuit will yield a(n) _______ current. A. continuous alternating B. continuous direct C. intermittent direct D. intermittent alternating
September 12, 2013 by Akeelah

Physical Science
2. Including a full-wave rectifier in an AC circuit will yield a(n) _______ current. A. continuous alternating B. continuous direct C. intermittent direct D. intermittent alternating
September 12, 2013 by Akeelah

Science
Steel wool [iron] is burned in the presence of oxygen in the air and makes iron oxide: is this a combination, decomposition, or replacement reaction?
April 14, 2010 by Christopher

chemistry
Can someone help me with this? 1)What new element is formed if magnesium-24 is bombarded with a neutron and then ejects a proton? Write a balanced nuclear equestion for this transmutation. Is this beta decay? That's what I'm thinking, but I'm not sure. It ejects a proton, so ...
December 18, 2006 by Alexander

Chem
Manganese dioxide reacts with bromide ions to form manganese ions and bromate ions in an acidic aqueous solution. Write the balanced equation for this reaction. 1)Br- + MnO2 + 3H2O --> Mn2+ + BrO3- + 2H3O+ 2)Br- + 3MnO2 + 6H3O+ ---> 3Mn2+ + 9H2O + BrO3- 3)6Br- + MnO2 + ...
December 12, 2007 by Rob

physical science
which substance is a base in this equation, Ba(OH)2 + 2 HNO3
May 10, 2010 by sue

history
why was the Open Door Policy important to the United States? a. it gave the United States territory in China b. it gave the United States access to millions of consumers in China c. it increased Chinese investments in the United States d. it kept European goods out of China i ...
March 28, 2009 by history

Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if neither reactant is present in stoichiometric excess. Separate your answers by comma. Pb(NO3)2(aq) + 2NaI(aq) → PbI2(s) + 2NaNO3(aq)
November 23, 2010 by Amrita

Macroeconomics
Peter Pundit, an economics reporter, states that the European Union (EU) is increasing its productivity very rapidly in all industries. He claims that this productivity advance is so rapid that output from the EU in these industries will soon exceed that of the United States ...
May 27, 2008 by Tiffany

Drug Abuse (URGENT)
What are some non physical effects of marijuana use? I've found lots of physical but I can't seem to find any non physical effects. Can someone help me please. Thanks very much.
October 12, 2009 by John

Chemistry
Having trouble with this question on my homework =/ 200mL of 0.5M H2SO4 is combined with 500mL of 0.1M NaHCO3. List the physical states of all products, give molarity of aqueous ions and grams of gases and solids. Thanks alot guys!! Any help is awesome
May 3, 2014 by Greg

chemistry
1) The activation energy of a certain reaction is 35.3 kJ/mol. At 20 degrees C, the rate constant is 0.0130 s^-1. At what temperature would this reaction go twice as fast? Answer in units of degrees Celsius. i think the answer is around 34, but i keep in getting it screwed up...
January 29, 2008 by Evets

physical
What is the reaction force to an action force of 750 N exerted by Earth on an orbiting communications satellite?
October 27, 2011 by Anonymous

Physical science
Is a chemical reaction the same as a chemical change i need to know so that i can plug it in to answer a question
January 18, 2015 by Sonnie

chemistry
Choose all of the following statements about the equilibrium constant K that are true: (a) If the K value for a reaction is > 1 then Go must be negative for this reaction (b) A large value for K implies there is a strong driver for the reaction to proceed in the forward ...
March 28, 2010 by James

Chemistry
when electricity is passed through water, the water decomposes into hydrogen gas and oxygen gas. when 10.00 kg of water were decomposed this way, 5788 l of oxygen gas were produced at 25 degrees celsius and 1 atm pressure. what is the percent yield of oxygen by volume?
November 21, 2014 by Noah

physical science
gimme a side of what physical science is. I know there's no shortcuts but it means alot of ev'rything I gotta know. Sho' me. I have little understanding of what you wrote. When one tries to communicate in non-standard English, the results are unpredictable. Here is a ...
September 3, 2005 by Henry

chemistry
Write the balanced net ionic equation for each of the following: 1) The reaction of dilute nitric acid with solid aluminum oxide. 2) The reaction of nitrous acid (HNO2) with potassium permanganate to produce nitrate and Mn(II) ions. Thanks for any help. How much of this do you...
September 18, 2006 by ally

chemistry
Q1) 5 liters of Butane gas (C4H10) is reacted with plenty of oxygen at 27 oC and 1 atm to produce carbon dioxide and water vapor. Calculate the following: 1- The volume of CO2 produced at 1 atm and 400 oC. 2- The mass of H2O vapor produced. 3- The mol % of the products. Given...
November 2, 2009 by David

Chemistry
If 0.200mol of nitrogen gas and 0.200mol of oxygen gas react, what is the limiting reactant? N2(g)+O2(g)→2NO(g) How many moles of NO are produced according to the equation? Please show how to perform this equation with the answer please.
October 25, 2014 by Tonya

chemistry grade 12 science
Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction - The answer for ...
February 4, 2009 by kite

electrochemistry
I am soooo confused! I was given this PdCl4^2-(aq)+Cd(s)----Pd(s)+4Cl^-(aq)+Cd^2+ I am supposed to give the 1/2 reaction for The PdCl4^2- My teacher said you could figure out the charges on the atoms by, in PdCl4^2, taking the subscript and mult. by the superscript to get the ...
November 17, 2009 by Christie

chemistry
what is the balnced equation for phosphorus burns in oxygen to produce tetraphosphorus decoxide
January 29, 2008 by jonet

Chemistry
If 4.0 g of hydrogen and 10.0 g of oxygen are mixed according to the equation 2 H2 + O2 = 2 H2O, which is the limiting reagent?
October 20, 2011 by HElp

History
8. What was the Eisenhower Doctrine? A.) The United States would liberate the countries behind the iron curtain. B.) The United States would use force to help any Middle Eastern nation threatened by communism. *C.) The United States would recognize the Peoples Republic of ...
February 5, 2013 by Cassie

chemistry
3. Use the ratio of stoichiometric coefficients in the reaction above to determine how many moles of O2 will react with the H2 available. Then, use molar mass to convert the moles of O2 into grams. For the reaction 2H2 + 1O2 =2H2O, there are 8.08 grams of H2 available. the ...
September 13, 2014 by feather

Chemistry
Using the balanced reaction, enter the formula, charge(if any), and state of the species (exclude H2O) in solution if Ba(NO3)2(aq) reactant is present in stoichiometric excess. Separate your answers by comma. NaCl(aq) + Ba(NO3)2(aq) → NR
January 29, 2010 by Kevin

Chemistry
4Fe + 3O2 = 2Fe2O3 So in math book it say " You can interpret this equation in terms of representative particles by saying that four atoms of iron react with three molecules of oxygen to produce two formula unit of iron(iii) oxide" Why it say that there are 4 atoms of iron / 3...
February 24, 2013 by Shadow

Chemistry
Methanol burns in oxygen to make carbon dioxide and water. The equation is exothermic, with 1452kJ/mol. of energy being released. methanol+oxygen=carbon dioxide+water 2CH3OH + 3O2 = 2CO2 + 4H2O -molar mass of methanol=32g/mol. Use the value to calculate the energy release when...
April 23, 2008 by Anonymous

Chemestry
A sample of crude potassium iodide was analyzed using this reaction (not balanced): I- + SO42- I2 + H2S (acid solution) If a 4.19-g sample of crude KI produced 1.33 g of iodine, what is the percent purity of the KI?
November 23, 2014 by Santiago

Chemistry 2
A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according following equations: 2KCLO3 -> 2KCL + O2 2KHCO3 -> K2O + H2O + 2CO2 2CO3 -> K2O + CO2 The KCL does not reacnder the conditions of the reaction. If 100.0g ...
September 13, 2007 by Pat

Chemistry
at 298 k, the Henry's law constant for oxygen is 0.00130 M/atm. Air is 21.0% oxygen. at 298 k, what is the solubility of oxygen in water exposed to air at 1.00 atm?
July 12, 2011 by Josh

Chemistry
Why does wood burn rapidly in a fireplace that has a good draft of air? is this answer correct Wood burns in a fire place that has good draft of air. This happens because when there is a good draft of air, they;ll be a higher concentration of Oxygen gas flowing iinto the ...
May 12, 2010 by Marge

Chem
Consider the following reaction was found to be the 0th order to A and 2nd order to B. 2A(cr) + 3B(aq) -->A2B3(cr) Write a rate law equation for the reaction rate of A with B.
January 29, 2008 by Anonymous

chemistry
Given the thermochemical equation: 2 Al(s) + 3/2 O2(g) > Al2O3(s) ΔH = -95.7 kJ find the heat of reaction, ΔH, for the following reaction: 2 Al2O3(s)> 4 Al(s) + 3 O2(g) Select one: a. -95.7 kJ b. +95.7 kJ c. -47.8 kJ d. +47.8 kJ e. +191.4 kJ
May 15, 2014 by tal

Chemistry
Calcium reacts with water according to the chemical equation below: Ca + 2H2O--> Ca(OH)2 + H2 All but which reaction is expected to occur on the basis of the reaction of calcium and water?
October 25, 2011 by Chelsea

Chemistry
Calcium reacts with water according to the chemical equation below: Ca + 2H2O--> Ca(OH)2 + H2 All but which reaction is expected to occur on the basis of the reaction of calcium and water?
October 25, 2011 by Chelsea

chemistry
nitrosyl bromide, NOBr is formed from NO and Br2-. Experiments show that this reaction is second order in NO and first order in Br2. what is the rate equation for this reaction?
September 3, 2014 by JOJO

Chemistry
I have no idea how to work this problem can anyone help explain this to me? 2H2O=2H2+O2 if 30mL of hydrogen are produced in the reaction above, how many militers of oxygen are produced?
December 2, 2007 by Ryan

Chemistry
N2(g) + O2(g) → N2O5(g) What volume of oxygen gas reacts to yield 750.0 cm3 of N2O5? The reaction conditions are 350C and 2.50 atm pressure
February 2, 2014 by Harry

Chemistry
The reaction between 32.0g of CH4 and excess oxygen gas produces 75.9 of CO2 gas and some water. Determine the percent yield? Plss help :((
March 12, 2014 by juju

chemistry
This functional group can be generated by oxidation of an aldehyde. Oxidation is just the reaction with oxygen, but unlike combustion you are not producing carbon dioxide and water.
May 10, 2014 by bekah

chemistry
4NH3 + 5O2 → 4NO + 6H2O 2NO + O2 → 2NO2 3NO2 + H2O → 2HNO3 + NO In this process, the NO made in the last reaction is recycled back into the second reaction and used as a reactant. In the end, all of the NO produced is recycled back so that when the ...
September 29, 2011 by jane

chemistry
Consider the following balanced equation: 2 Na + 2 H2O ? 2 NaOH + H2 If 92.0 g of sodium reacts with 76.0 g of water until completion, which reactant will remain, and in what quantity?
September 24, 2006 by brian

Inorganic chemistry
how is chlorine neutralized using a compound containing sodium thiosulfate, what is the complete balanced equation for all species involved
April 23, 2009 by Steve

Chemistry
Write the balanced chemical equation for the equilibrium that is taking place between acetic acid and sodium acetate in the buffer solution.
March 15, 2010 by Axl

chemistry
What is the approximate volume of 0.095 M HCl needed to neutralize 0.25g of sodium carbonate. Hint: Write a balanced equation first.
September 21, 2011 by Nikkie

chemistry
How do I write a balanced equation for the following...Sulfur trioxide gas is bubbled through 125ml of a 0.165M sodium hydorxide solution?
April 12, 2012 by Cindy

chemistry
The following soluble salts are strong electrolytes. For each, write a balanced equation for their dissociation in water. a. LiBr b. NaNO3 c. FeCl3 d. Mg(NO3)2
November 23, 2012 by Boo Boo

Chemistry equation
Write a correctly balanced series of chemical equations to describe the stepwise protonation of carbonate ion. Na2CO3 with HCl
April 9, 2013 by Jaden

chemistry
Write a balanced nuclear equation for the positron emission of each of the following radioactive isotopes: silicon-26,mercury-188,7737Rb,9345Rh
December 5, 2013 by lana

Science
which of the following is a correctly balanced equation A.2Cu+O2--> 2CuO B.Mg + O2--> MgO2 C. 3KCI+HNO3-->3HCl+KNOW D. CaCO3---> CaO+CO3 answer b
September 22, 2014 by kim

Chemistry
3. Which oxidation-reduction reactions are best balanced by the half-reaction method? A.) covalent reactions *B.)acid-base reactions C.) ionic reactions D.) intermolecular reactions Thank you.
March 23, 2013 by Anonymous

chemistry
In a particular redox reaction, Cr is oxidized to CrO42 and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Phases are optional. Cr + Cu2+ = CrO42- + Cu+
February 24, 2012 by Anonymous

chemistry
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 18, 2013 by Danny Simone

calculus
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the hydrogen ...
December 18, 2013 by Danny Simone

Chemistry
Does the reaction between CO2(g) + Mg(OH)2(aq) produce MgCO3(s) + H2O(l) or Mg(HCO3)2 ??? Normally, Mg(CO3)2 but I suspect an excess of CO2 will produce the bicarbonate. For example, CO2(g) + Ca(OH)2(aq) ==> CaCO3(s) + H2O(l) and that is often done by exhaling into a flask ...
May 31, 2007 by Fiona

BIO
3. Fish have a two chambered heart called a single loop. discuss the benefits and drawbacks of this system. 4. Amphibians have a three chambered heart. Discuss the importance of the extra chamber in terms of the obvious physical differences that amphibians like frogs have from...
April 14, 2013 by SOMEONE HELP THIS PERSON

chemistry
What is the standard entropy of reaction, the standard entropy of reaction, in J/K, for the combustion reaction of ethylene described in the previous questions? The temperature is 298.15K. (Enter your answer as a signed number in scientific notation without units.) My answers ...
April 24, 2014 by bekah

Chemistory
The reaction has an equilibrium constant of = 0.154. If 6.60 of , 4.30 of , and 11.60 of are added to a reaction vessel with a volume of 5.30 , what net reaction will occur? A-The reaction will proceed to the left to establish equilibrium. B-The reaction will proceed to the ...
April 18, 2013 by Anonymous

Chemistry
35. In a calorimeter, the energy content of a substance is calculated from a measure of the temperature change in a known mass of a. iron b. air c. water d. steel C? 36. A decrease in the reactant concentration, per unit time, in a reaction is a measure of the a. heterogenous ...
October 29, 2010 by mysterychicken

ENGLISH
I have a term paper and its on the Prohibition era, and i want to know if this thesis is the best, and if not,could you help reform it? thesis: Prohibition of alcohol in the United States during the 1900's was enacted to reduce crime, have a healthy country, and also to have a...
February 7, 2012 by chris34

chem
The full inoic equation for an electrochemical cell is Br2 + Zn yields 2Br- + Zn2+. write the half reaction that occurs at the anode and the half reaction that occurs at the cathode
June 7, 2010 by Jessica

Chemistry
In a particular redox reaction, MnO2 is oxidized to MnO4 and Cu2 is reduced to Cu . Complete and balance the equation for this reaction in acidic solution. Phases are optional. MnO2 + Cu^2+ ---> MnO4^- + Cu^+
May 4, 2014 by BOB

chemistry
i need to deduce the type of bonding that holds sodium cyanide together and write a balanced equation for sodium cyanide dissolving in water any help would be appreciated sarah Na^+ + :C:::N:^- Na to CN bond is ionic (more or less). C-N bond is covalent. NaCN + HOH ==> NaOH...
March 1, 2007 by sarah

New AP Chem Question for Dr. Bob
This is a Hess' Law problem. I think I got it but I'm hoping you could check it for me: Calculate the heat of reaction for changing 1 mol of silica, SiO2, that has been extracted from sand into the pure silicon that is needed to make computer chips. Use the following data: ...
January 23, 2007 by Belinda

physics
A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h in the same direction. 1.What is the name of the physical process that would occur if both vehicles kept moving at constant speed? 2. How long would...
December 2, 2008 by Sandhya

Chemistry 111
1. In the balanced oxidation-reduction reaction (occurring in acidic condition) the coefficients before H+ and Zn2+ are ____ and ____, respectively? Zn + NO3 → NH4+ + Zn2+ (unbalanced) A. 4, 2 B. 4, 1 C. 6, 1 D. 10, 4 E. 12, 2
December 2, 2011 by Danielle

social studies
The Articles of confederation were nto adopter for fives because: (A) the antifederalists waged a stiff battle against them (B) disputes continued over western lands (C) the large states and the small states could not agree on representation (D) the question of slavery divided...
March 25, 2010 by Mandy

Physical Science
In the equation length = t^2 * g/(2PI)^2, what do the symbols ^, *, and / represent?
September 23, 2007 by Beth

PHYSICAL CHEMISTRY
explain why R is ACONSTANT IN THE IDEAL GAS EQUATION
June 11, 2010 by JUDITH

calculus
In a case study where the maximal rates of oxygen consumption (in ml/s) for nine species of wild African mammals were plotted against body mass (in kg) in a log-log plot, it was found that the data points fell on a straight line with the slope approximately equal to 0.3 and ...
January 25, 2013 by Anonymous

anon
In a case study where the maximal rates of oxygen consumption (in ml/s) for nine species of wild African mammals were plotted against body mass (in kg) in a log-log plot, it was found that the data points fell on a straight line with the slope approximately equal to 0.5 and ...
January 27, 2014 by Anonymous

AP Chemistry
Write the balanced molecular, complete ionic, and net ionic equations for the reactions that occur when the following are mixed. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) solid silver hydroxide ...
September 24, 2011 by Rahul

physical science
the attraction or pull of a person"s body toward the earth by the earth is called weight.the reaction to this force is the:
January 17, 2011 by kitsy

chemistry
1(a) when 25.0ml of 0.500 mol.dm3 H2SO4(AQ) SOLUTION IS added to 0.025dm3 of 1.00 moldm3 KOH SOLUTION , THE TEMPERATURE OF THE REACTION MIXTURE RISES FROM 23.50 CELCIUS TO 30.17 CELCIUS . THE SPECIFIC HEAT CAPACITY AND DENSITY OF WATER 4.20j.g.celcius and 1.00 g.cm. the ...
February 9, 2012 by mustafe

CHEMISTRY
I need help with these problems ASAP: I need help setting these problems up: pleas!! (1)Calculate the volume of 1.87 M NaI that would be needed to precipitate all of the Hg+2 ion from 199 mL of a 1.96 M Hg(NO3)2. The equation for the reaction is 2NaI (aq) + Hg(NO3)2 (aq) ---&...
July 20, 2010 by Priya

chemistry
Consider the following reaction. CH4(g) + 2 O2(g) CO2(g) + 2 H2O(l) H = -891 kJ Calculate the enthalpy change for each of the following cases. (a) 5.00 g methane is burned in excess oxygen.
October 31, 2010 by Anonymous

chemistry urgent
if 100 g of iron were reacted with 100 g of oxygen according to the reaction below, the maximum yield in grams of Fe2O3 would be: Dr. Bob. Please help.
November 30, 2010 by Lynn

chemistry
oxygen will react with the metal copper it will also react with the nonmetallic compound butane (c4h10) which ofthese reactions is combustion reaction?explain your answer.
September 1, 2011 by lauren

Trigonometry (Math)
Can someone help me simplify this equation? It needs to be ten characters or less, including signs, parenthesis, etc. If you could show me how you get there that would be great! Thanks!
May 9, 2012 by Brianna

Chemistry
What type of reaction is involved in the making of Polypropylene? Would it be a synthesis reaction? The final step is a polymerization reaction. Before that, the propylene (C3H6) is made in a cracking reaction from heavier hydrocarbons. Thank you. :)
January 21, 2007 by Lisa

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