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July 25, 2014

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

Number of results: 32,483

Chemistry - Acid structure
I'm writing up a lab report for the an experiment in the separation and analysis of an unknown mixture (acid and neutral compound). The guideline I'm looking at states "You do need to include balanced reaction(s). Since you do not know the exact structure of your acid, you may...
November 17, 2010 by Anonymous

chem
PLEEEZE help name the type of reaction K + MgBr -> Not enough information is provided. And not magnesium bromide is MgBr2. Is this a solution phase or exactly how is the K metal added to the MgBr2? As DrBob has indicated, not all of the information has been provided. You ...
February 19, 2007 by key

college chemistry
If 0.490 mol of Pb(NO3)2 and 130 mL of 1.08 M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many moles of Pb(NO3)2 remain? Round your answer to 3 significant figures. Pb(NO3)2(aq) + 2NaI(aq) → PbI2(s) + 2NaNO3(aq)
February 26, 2010 by John

Chemistry 3A
C2H2(g)+ 5/2o2(g)-> 2Co2(g)+ H2o(g)+ 1255.8KJ how many grams of C2H2 are reacted when 310 KJ of heat are released? I left the oxygen (O) lowercase in the equation so it does not get mixed up with zero.
December 10, 2012 by Gurjot

fitness
VO2max is related to which one of the following choices? A. The efficiency of the body to secrete perspiration and take in lactic acid B. The efficiency of the body to take in oxygen and eliminate carbon dioxide C. The efficiency of the body to take in carbon dioxide and ...
November 20, 2011 by Anonymous

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 18, 2011 by Lindsey

Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in the tank and the ...
April 19, 2011 by Lindsey

Chemistry
The net reaction in a voltaic cell with Ecell= +.726V 2Fe^3+(aq) + 3Zn(s) --> 2Fe(s) + 3Zn^2+(aq) What is the delta G for this reaction at 25C I tries using this equation: delta G = -nFEcell = -n(90485)(.726) However, I don't know how to calculate n in this. I ...
August 9, 2009 by Sara

chemistry lab
An enzyme-catalyzed reaction is carried out in a 50-mL solution containing 0.1 M TRIS buffer. The pH of the reaction mixture at the start was 8.0. As a result of the reaction, 0.002 mol of H+ were produced. What is the ratio of TRIS base to TRIS acid at the start of the ...
February 2, 2008 by alan

Chemistry
A mixture of ammonia and oxygen is prepared by combining 0.330 L of NH3 (measured at 0.790 atm and 22C) with 0.210 L of O2 (measured at 0.820 atm and 48C). How many milliliters of N2 (measured at 0.740 atm and 100. C) could be formed if the following reaction occurs? 4NH3(g...
July 8, 2014 by Luke

Chemistry
If 0.790 mol of solid TiO2 and 8.53 g of solid C are reacted stoichiometrically according to the balanced equation, how many moles of solid TiO2 remain? 3TiO2(s) + 4C(s) + 6Cl2(g) → 3TiCl4(l) + 2CO2(g) + 2CO(g)
February 10, 2009 by Anonymous

Physic/Chemistry
You react 25.0 liters of oxygen gas at STP with 50.0 ml of ethanol liquid. Ethanol has a density of 0.789 g/ml. After actually running the reaction you determined the percent yield was only 78.5%. How many LITERS of CO2 did you make? (Must put CO2 in answer label)
May 20, 2014 by Bree W.

science - atoms and bonds
#1) Draw the following ions using a Bohr diagram: b)oxygen: i got [oxygen:2)8)]-2 (the -2 is an exponent) but the answer said [oxygen: 2)8)8)]-2...is this right? d)fluorine: i got [fluorine:2)8)]-1 and the book says [fluorine: 2)8)8)]-1..again, is the book making a mistake? #8...
May 10, 2008 by Sarah

chemistry
a carbon containing 3 atoms of carbon and 8 atoms of hydrdren combinend in reactionwith oxygen molecules the 2 end products of this eqation are carbon dioxide co 2 an water what element should i look at first inn this oxygen hydrogen carbon or dioxide and wen finish balancing ...
May 12, 2008 by andrea

Chemistry
The relative number of elements and compounds in a chemical equation are represented by either coefficients, subscripts, charges of phase symbols. I think it's coefficients, but is this right? My other question is that if you start a reaction with four molecules containing a ...
April 18, 2009 by Khzyata

Chemistry
How can Nitrogen and oxygen form nitrogen dioxide if both nitrogen and oxygen have a negative charge?
February 13, 2008 by Kelsey

Chemistry
For the reversible, one-step reaction A + B ARROW C + D, the forward rate constant is 35.9 1/(Mh) and the rate constant for the reverse reaction is 25.4 1/(Mh). The activation energy was found to be 33.0 kJ/mol for the forward reaction and 45.6 kJ/mol for the reverse ...
June 13, 2012 by parker

Chemistry
One enzyme- catalyzed reaction in a biochemical cycle has an equilibrium constant (K1) that is 10 times the equilibrium constant (K2) of a second reaction. If the standard Gibbs energy of the former reaction is - 300 kJ mol-1, what is the standard reaction Gibbs energy of the ...
April 10, 2012 by harry

chemistry - check please
Have I balanced this right Al2Se3 + 6 H2O ==> 2 Al(OH)3 + 3 H2Se Let me give you a hint on these, write water as HOH, and it balances faster. Treat the OH as a group. Al2Se3 + 6 H(OH) ==> 2 Al(OH)3 + 3 H2Se Yes, it is balanced: see the six H on each side, and the six OH ...
February 25, 2007 by Laura

Chemistry
Question asking about how enzymes affect the rate of a reaction. Check all that apply 1. They shift the reaction equilibrium towards the products. 2. They increase the concentration of the reactants. 3. They lower the activation energy of the reaction. 4. They decrease the ...
February 20, 2013 by Patrick

chemistry
Calculate ΔG at 25C for the precipitation of lead(II) chloride from mixing 100. mL of 0.025 M lead(II) nitrate solution with 100. mL of 0.15 M sodium chloride solution. The ΔG for the reaction at 25C = −27.36 kJ/mol. (Hint: write out reaction equation also...
October 2, 2012 by Ashley

Physical Science
A chemist is investigating an unknown gas. She observes that it combines with oxygen. It takes two liters of oxygen to fully react with one liter of the unknown gas, and that the resulting volume of gas is also two liters. What does she conclude? A.) The unknown gas is ...
October 17, 2011 by Anonymous

science
a) calculate the heat of reaction, in kilojoules, for the reaction: 2NO2(g) + 3H2(g)--->2NH3(g) + 2O2(g) b) is the reaction endothermic or exothermic? how can you tell? I will be happy to critique your work on this. You will have to look up the heats of formation.
January 18, 2007 by michelle

Chem
COMPOUND 1 CH2 = CH-CH-OH with CH3 under the second CH Plus CH3-CH-CH2-C (double bond O off C and -OH off C) also a CH3 under CH i) complete the equation for this reaction ii) Indentify any new functional groups in the organic product(s)name them iii)State the type of reaction...
March 12, 2007 by Adam

Easy chem question... me=braindead, help please?
It's been so long I forget which ones are which. My balanced equation is Sr(NO3)2 + 2KIO3 --> Sr(IO3)2 + 2KNO3. It wants the total ionic and the net ionic Thanks ^^ (not just looking for answer, want explanation too please, just a short one) In aqueous solution, this would ...
March 1, 2007 by Angie

chemisrty
Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of MgSO3 and HI are mixed. 2 H+(aq) + SO32-(aq) → H2O(l) + SO2(g) 2 H+(aq) + SO32-(aq) + Mg2+(aq) + 2 I-(aq)→ H2SO3(s) + MgI2(aq) Mg2+(aq) + 2 I-(aq) → MgI2(s) 2 H+(aq) + SO32-(...
April 12, 2011 by Anonymous

chemistry
the composition of hydrogen selenide can be determined by heating tin(Sn)in a measured volume of gas the hydrogen selenide is decomposed producing solid tin selenide(SnSe)and hydrogen gas if the temp,and pressyure are unchanged,the gas volume when the decomposition is over is ...
January 24, 2007 by JILLIAN

chemistry
The following reaction is a single-step, bimolecular reaction: CH3Br + NaOH --> CH3OH + NaBr When the concentrations of CH3Br and NaOH are both 0.135 M, the rate of the reaction is 0.0070 M/s. (a) What is the rate of the reaction if the concentration of CH3Br is doubled? (b...
March 24, 2012 by katie

Chemistry
If 430 mL of 0.837 M aqueous HNO3 and 23.5 g of solid Al are reacted stoichiometrically according to the balanced equation, how many grams of solid Al remain? Round your answer to 3 significant figures. 6HNO3(aq) + 2Al(s) → 3H2(g) + 2Al(NO3)3(aq)
February 26, 2010 by Sammy

Chemistry
I was getting restless to post these questions, so I decided to go ahead and post them. Balance each of the following skeleton equations. B) Na + F2 -> NaF I balanced out this equation like this. Na + F2 -> Na2F OR would I write it as -> Na + F2 -> NaF2 , would the...
July 11, 2010 by Derrick

Chemistry
When hot and concentrated, sulfuric acid is a fairly strong oxidizing agent. Write a balanced net ionic equation for the oxidation of metallic copper to Cu(II) ion by hot concentrated H2SO4, in which the sulfur is reduced to SO2.
June 30, 2011 by Jen

Chemistry
I am not sure if I understand how to balance this correctly. I need to write a balanced equation for the decomposition of solid copper(ii) sulfate to form gaseous sulfur trioxide and solid copper (ii) oxide. 2CuSO7 = CuSO4 + SO3 + CuO
April 8, 2014 by david

Chemistry
10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming the acid is monoprotic ( like HCL or HF ) , what is the molecular mass of the acid? Is it possible to find the mols of the acid? (Balanced equation & solution please!)
June 6, 2014 by Gage

Chemistry
10.0 g of an unknown acid is titrated to the equivalent point using 65.0 ml of 0.150M KCH. Assuming the acid is monoprotic ( like HCL or HF ) , what is the molecular mass of the acid? Is it possible to find the mols of the acid? (Balanced equation & solution please!)
June 6, 2014 by Gage

chemistry
A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4 kPa ifpHe = 82.5 kPa and pCO2 = 0.4 kPa
July 29, 2008 by natasha

physics help pleasee!
Three moles of oxygen gas (O2) are placed in a portable container with a volume of 0.0037 m3. The temperature of the gas is 330C. (a) What is the pressure of the gas? ? Pa (b) What is the average kinetic energy of an oxygen molecule? ? J
December 7, 2008 by kelsey

chemistry
The density of air is 1.25 gram per liter determine the volume percentage of oxygen in the air at 1 atmospheric pressure and 27 degree celcius temprature? Assume air is a mixture of nitrogen and oxygen.
September 6, 2010 by Neha ghatia

Chemistry
For the following electrochemical cell: Fe(s) / Fe2+(aq) // MnO4(aq) Mn2+(aq) / Pt(s) Which letter corresponds to the correct balanced chemical equation in an acidic solution? A. 5Fe(s) + 16H+(aq) + 2MnO4(aq)--> 2Mn2+(aq) + 8H2O(l) + 5Fe2+(aq) B. Fe(s)+8H+(aq)+MnO4(aq)+...
May 8, 2008 by Amy

chemistry
What is a complete ionic equation for the reaction between Pb(NO3)2 and NaI?
March 10, 2010 by BT

chemistry prt 2
What is the net ionic equation of the reaction of MgCl2 with NaOH
October 11, 2010 by ej

chemistry prt 3
What is the net ionic equation of the reaction of MgSO4 with NaOH
October 11, 2010 by ej

chemistry
what is the net ionic equation, including phases, for the reaction of AgNO3 with Ba(OH)2
March 21, 2011 by bob

science
Name the type of reaction that the equation represents? 2Cu + O2 -------> 2CuO
February 11, 2012 by Natalie

Chemistry
What is the possible ionic equation of TrisEDTA solution? REDOX reaction.
April 25, 2012 by Maryam

Chemistry
Balance the equation and write the reaction-quotient expression, Qc. U(s) + F2 (g) <----> UF6 (g)
October 15, 2012 by Andrea

Chemisty
blanced equation for MgSO4(aq) + BaCl2(aq) describing any precipitaion reaction
June 3, 2014 by Carmen

Can someone please help me with balancing ASAP
Balance the following equation. (for a balanced eq. aA + bB → cC + dD, enter your answer as the integer abcd) MnO4−(aq) + SO32−(aq) + H+(aq) → Mn2+(aq) + SO42−(aq) + H2O(l)
December 14, 2012 by Trina

Chemistry
I had to share a diagnostic procedure that I had done. I shared a breast MRI, in which I had contrast. Now I need to share on balanced chemcial equation related to this, and be sure to be specific. Can someone please help me??
April 22, 2013 by anonymous

science
Try MgBr2 and I expect you can balance it. i got a balancing equation problem i gotta get this to balance Mg(OH)2+ HBr --> MgBr + H20 so far i'v gotten it down to 2Mg(OH)2+ 4HBr --> 2MgBr + 4H20 but it's still not balanced,so can someone please balance this u can only ...
December 12, 2006 by DrBob222

stoichiometry
Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and methane. 2 NH3(g) + 3 O2(g) + 2 CH4(g) 2 HCN(g) + 6 H2O(g) If 5.27 103 kg each of NH3, O2, and CH4 are reacted, what mass of H2O will be produced, assuming 100% yield?
September 23, 2008 by ari

Chemistry
What volume of hydrogen sulfide is required to produce 161 liters of sulfur dioxide according to the following reaction? (All gases are at the same temperature and pressure.) hydrogen sulfide (g) + oxygen (g)----> water (l) + sulfur dioxide (g)
April 25, 2012 by Mohamed

chemistry
Write the balanced equation for the hydration of CuSO4. Indicate the physical states using the abbreviations (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) to indicate the aqueous phase. Indicate appropriate charges on negative and positive ions if they are...
November 1, 2013 by rose

Chemistry
Pb(s) + KNO3(aq) ----> No reaction HNO3(aq) + Sr(OH)2(aq) ----> H2O + Sr(NO3)2 NO3 being Nitrate, and (OH)2 meaning 2 Oxygen and 2 Hydrogen atoms in the second problem. The second two in the products of the second problem is a subscript for NO3. Are these correct? Thank ...
January 31, 2009 by Momo

Chemistry
If 49.6 mL of liquid CS2 and 12.8 g of gaseous Cl2 are reacted stoichiometrically according to the balanced equation, how many moles of liquid S2Cl2 are produced? CS2(l) + 3Cl2(g) CCl4(l) + S2Cl2(l)
February 12, 2010 by andy

chemistry
write a balanced chem equation for solid lead (II) sulfide reacts with aq hydrochloric acid to form solid lead (II) chloride and dihydrogen sulfide gas.
March 28, 2010 by jen

Chemistry 20
Determine the amount concentration of the iron ions and sulfate ions in a 0.620 mol/L solution of iron(III) sulfate. Including the balanced chemical equation.
November 15, 2010 by Anonymous

Chemistry
Given the balanced equation: a. Fe2O3+3C=2Fe+3CO: b. How many moles of Fe are produced when 1.36 moles of carbon monoxide are produced? c. How many grams of Fe is part b equal to? d. how many molecules of Fe are in part B
October 8, 2012 by Noel

Chemistry
how many kilograms of NH3 are needed to produce 2.90x10^5kg of (NH4)2SO4? the balanced equation is: 2 NH3 + H2SO4 --> (NH4)2SO4
October 14, 2008 by Kelly

Chemistry
how many kilograms of NH3 are needed to produce 2.90x10^5kg of (NH4)2SO4? the balanced equation is: 2 NH3 + H2SO4 --> (NH4)2SO4
October 14, 2008 by Kelly

Chemistry - Science
A fuel cell designed to react grain alcohol with oxygen has the following net reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) The maximum work that 1 mol of alcohol can yield by this process is 1320 kJ. What is the theoretical maximum voltage this cell can achieve?
May 3, 2014 by Ana

Chemistry
in a cylinder that was 9.0 mm in diameter and 215 mm in length. I want to know the temperature (in Kelvin) and pressure (in atm) within this tube after combustion assuming that the cork did not shoot out of the end, i.e., the pressure was contained within the tube after ...
November 29, 2006 by John

chem
2) How many moles of nitrogen monoxide will be produced when 80.0 grams of oxygen are used? What volume of ammonia is needed? this iz the equation 4NH3 + 5O2 -> 6H2O + 4NO the 1st part i got 4 mol NO and i dont no how to do the 2nd prt
January 25, 2009 by gabriella

chemistry
True statement for Catalyst ___________ I. make a spontaneous reaction is not spontaneous II. accelerate the reaction forward and slow reverse reaction III. lowering the activation energy of the forward reaction IV. lowering the activation energy of the reverse reaction
April 6, 2013 by Mega

Chemistry (repost)
Pb(s) + KNO3(aq) ----> No reaction HNO3(aq) + Sr(OH)2(aq) ----> H2O + Sr(NO3)2 NO3 being Nitrate, and (OH)2 meaning 2 Oxygen and 2 Hydrogen atoms in the second problem. The second two in the products of the second problem is a subscript for NO3. Are these correct? Thank ...
January 31, 2009 by Momo

Physics
Wen an oxygen nucleus at rest is struck by a neutron moving at a speed of 1.2 x 10^8 m/s in a head on elastic collision crazy things happen. If the oxygen nucoeus is 8 times the mass if the neutrin, what us the velocity of each particle after the collision?
January 6, 2013 by Alicia

physics
The oxygen taken in by the body reacts with fats, carbohydrates, and protein, liberating energy internally at a rate of about 2.12104 J /liter. If a 85.4 kg man requires 73.0 W of power even while sleeping, what is his rate of oxygen consumption?
February 25, 2014 by Chris

Chemistry
A chemist is producing copper(II) chloride using the following reaction: Cu(s) + Cl2(g) --> CuCl2(s) In one reaction, the chemist uses 15.0 g of copper metal and 10.0 g of chlorine gas as reactants. When the reaction reaches completion, 16.0 g of copper(II) chloride has ...
September 1, 2009 by Mercedes

Chemistry
If 61.0 g of gaseous Cl2 and 25.4 mL of liquid CS2 are reacted stoichiometrically according to the balanced equation, how many milliliters of liquid CCl4 are produced? CS2(l) + 3Cl2(g) → CCl4(l) + S2Cl2(l)
February 17, 2010 by John

Chemistry
What are the balanced equation for the following reactions: HCl and Sodium Hydrogen Carbonate HCl and Copper oxide HCl and Calcium carbonate HCl and Magnesium NaOH and Ammonium Chloride
March 9, 2010 by Abigail

Chemistry!
When 2.5g of NaOH were dissolved in 49.0g water in a calorimeter at 24.0 C, the temperature of the solution went up to 37.1 C. a. Is the solution reaction exothermic? Why? The temperature or the water went from 24.0 to 37.1 which is an increase. If the solution of NaOH in ...
December 4, 2006 by DrBob222

AP Chemisty
N2(g)+3F2 yields 2Nf3(g) Delta H(degree)298=-264KJ mol-1;Delta S(degree)298=-278J K-1 mol-1 The following questions relate to the synthesis reaction represented by the chemical equation above. a.)CAlculate the value of the standard free energy change, Delta G(degree)298, for ...
June 7, 2007 by Jenna

Chemistry. What equation do I use?
A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original sample was magnesium...
December 2, 2008 by Sarah

college
18.0 grams of oxygen is reacted with nitrogen to make 56.0 grams of nitrogen dioxide according to the following reaction: 2O2 + N2 ---> 2 NO2 How much nitrogen (in grams) reacted?
November 19, 2010 by SAMM

PHYSICS
A gas cylinder contains a mixture of carbon dioxide and oxygen, which have different molecular masses. The contents of the cylinder are in thermal equilibrium. Which of the following statements is correct? Question 1 options: A) All carbon dioxide molecules and all oxygen ...
August 16, 2011 by Maggie

chemistry
At elevated temperatures, sodium chlorate decomposes to produce sodium chloride and oxygen gas. A 0.8915-g sample of impure sodium chlorate was heated until the production of oxygen gas ceased. The oxygen gas collected over water occupied 57.2 mL at a temperature of 22C and a...
November 20, 2012 by Fred

chemistry
a sample of ClO2 was composed of 4.271g of chlorine and 3.584g of oxygen. How many grams of oxygen would there be in a sample of Cl2O that contained 5.377 of chlorine?
September 19, 2007 by Anonymous

Chemistry-Equations
Iron(III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen?
March 5, 2010 by meg

chemistry
if oxygen gas were collected over water at 22c and the total pressure of the wet gas were 710 mm hg what would be the partial pressure of the oxygen?
February 23, 2011 by fox

Chemistry 11
12.0 g of carbon reacts with 32.0 g of oxygen to form 44.0 g of Co2. if we react 20.0 g of oxygen with 20.0 g of carbon,how many grams of carbon will be used up?..... i have no clue where to start... can u just tell me the steps to solve similar problems like this
September 22, 2010 by priya

chemistry
consider the following equilibrium. 4NH3(g) +3O2(g)<-> 2N2(g) + 6H2O(g) suppose 0.30mol of NH3 and 0.40mol of oxygen are added to a 5.0L container. If x mol of water is present at equilibrium, what is the equilibrium concentration of oxygen?
April 22, 2014 by Anonymous

Chemistry
Consider the reaction: 2 H2S(g)--><-- 2H2(g) + S2 Kp= 2.4 x 10^-4 at 1073k A reaction mixture contains .112 atm of H2,.055 atm of S2, and .445 atm of H2S. Is the reaction mixture at equlibrium? If not, in what direction will the reaction proceed?
February 23, 2011 by sally

Chemistry
Consider the reaction: 2 H2S(g)--><-- 2H2(g) + S2 Kp= 2.4 x 10^-4 at 1073k A reaction mixture contains .112 atm of H2,.055 atm of S2, and .445 atm of H2S. Is the reaction mixture at equlibrium? If not, in what direction will the reaction proceed?
February 23, 2011 by sally

chemistry
During heating a 5 g solid gives off oxygen gas. The mass of the residue after heating is 3.5 g. What is the mass of the oxygeb ? What percent of the compoiund is oxygen?
January 20, 2011 by Ceci

chem stoichiometry
Acetylene(C2H2) burns in oxygen to form carbon monoxide and water. How many liters of oxygen(at STP) are needed to burn 25.0 L of acetylene (at STP)?
April 14, 2012 by linda

physics
assume a diver breathes a mixture of Oxygen and Helium. by weight what ratio of helium to oxygen must be used if the diver is at an ocean depth of 50 meters?
June 15, 2012 by Anonymous

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?
July 12, 2012 by maribel

Honor Biology
Without oxygen, cellular respiration grinds to a standstill, although glycolysis can continue to make some ATP anaerobically for a short time. When oxygen runs out, why does electron transport stop? Why do you thing the Krebs cycle stops?
December 6, 2010 by Pam

chemistry
Which of the following can we predict from an equilibrium constant for a reaction? 1 The extent of a reaction 2 Whether the reaction is fast or slow 3 Whether a reaction is exothermic or endothermic a. 1 only b. 2 only c. 3 only d. 1 and 2 only e. 1 and 3 only
May 14, 2010 by Aungsan

chemistry
N2 + 3H2 --> 2NH3 how many grams of hydrogen are needed to react with 50 grams of nitrogen? Three moles of H2 per one mole of N2. How many moles of N2 is 50 grams? 1.79 moles is 50 grams. You do these problems in steps. Step 1. Write a balanced chemical equation. You have ...
June 22, 2006 by Hawk

chemistry
If 73.5 g of liquid Br2 and 330 mL of 1.18 M aqueous NaI are reacted stoichiometrically according to the balanced equation, how many grams of liquid Br2 remain? Round your answer to 3 significant figures. 2NaI(aq) + Br2(l) → 2NaBr(aq) + I2(s)
March 20, 2012 by jasmine

chemistry
how do i solve the following problem? Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2NO2 → 2NO + O2 In a particular experiment at 300C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of Disappearance of NO2 for this period is ...
November 17, 2010 by jess

chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by jason

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by Zoe

Chemistry
Ammonium carbonate decomposes upon heating according to the following balanced equation: (NH4)2CO3(s)-->2 NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 25 C and 1.07atm by the complete decomposition of 11.86 g of ammonium carbonate.
April 16, 2010 by Zoe

chemistry
an oxygen storage tank contains 12l at 25 degrees C and 3 atm.After a 4 L canister of oxygen at 25 degrees C and 3atm is emptied into the ,what do you expect the temperature of the tank to be
October 11, 2012 by linda

Physiology
When maternal oxygen is transferred to the fetus and fetal CO2 is passed back, how does this affect the maternal dissociation curve? Does this shift increase the transfer of oxygen to the fetus?
March 3, 2013 by Sean

Chemistry
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium.What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 8.9atm ?
March 20, 2014 by Anonymous

chemistry HELP
hydrogen peroxide (H2O2) decomposes into water and oxygen. what amount of hydrogen peroxide is necessary to produce 24g of oxygen.
November 11, 2010 by tarkan

Chemistry
Iron (III) oxide is formed when iron combines with oxygen in the air. How many grams of Fe2O3 are formed when 16.7 g of Fe reacts completely with oxygen? a. 12.0g b. 23.9g c. 47.8g d. 95.6g
June 21, 2012 by Summer

help ??????????????????
With respect to treating an acute myocardial infarction: Identify a drug or treatment which has the effects listed 1)Activates plasminogen to lyse the thrombus. a)Aspirin b)Warfarin c)Nitrate d)Morphine e)Tenectaplase f)oxygen 2)Helps to keep ischaemic cells alive a)Aspirin b)...
November 22, 2013 by centya

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