Saturday
April 19, 2014

Search: a certain reaction has the following generaln form

Number of results: 18,724

Chem
Write the equation. Write the expression for Kc. Substitute into Kc and calculate the reaction quotient, Q. Compare that with Kc. If Q<Kc, it means the numerator is too small, the denominator is too large, and the reaction will go to the right. If Q>Kc, it means the ...
Monday, March 22, 2010 at 10:24pm by DrBob222

Chemistry
The reaction describing the formation of ozone from oxygen is shown below. 3 O2(g) <--> 2 O3(g) Calculate Grxn at 288 K for this reaction in a flask where [O2] = 3.419 x 10-2 M and [O3] = 5.783 x 10-4 M. Assume G° = 326 kJ. Use molarity to construct the reaction ...
Monday, January 2, 2012 at 4:47pm by Summer

chemistry
"Following the reaction of zinc with hydrochloric acid, a secondary reaction can occur if a product of the first reaction is ignited. Write the complete reactions for both reactions." "If 2.75g zinc with 0.15 moles HCL, how much flammable product can be collected?" I know one ...
Sunday, March 4, 2012 at 7:27pm by Brianna

Chemistry
A student titrated 1.852 g of a mixture containing potassium hydrogen phthalate, KHP....? A student titrated 1.852 g of a mixture containing potassium hydrogen phthalate, KHP, with 0.163 M NaOH solution. She recorded an initial buret reading of 0.84 mL and a final buret ...
Wednesday, March 7, 2012 at 3:58pm by Cynthia

Chemistry
I had to perform an experiment for rate of reaction. The point of the experiment was to show how changes in reactant concentration, temperature, and catalyst presence can affect the rate of a reaction. The reaction that we studied was H2O2 + 2I^- + 2H^+ -> I2 + 2H2O We had...
Sunday, February 26, 2012 at 2:41pm by Hannah

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 ...
Thursday, February 9, 2012 at 12:02pm by mustafe

Chem
An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below. Half-Reaction | Standard Reduction Potential, E° H2O2+ 2e- => 2 OH- | 0.88 V O2+ 2 H2O + 2e- => H2O + 2 OH- | -0.15 V (d) Calculate the value of ...
Tuesday, April 23, 2013 at 6:10pm by Jess

chemistry
A reaction rate increases by 60.3% when the temperature is increased from 21.5 to 35.6°C. Calculate the activation energy (in kJ/mol) for the reaction.
Sunday, March 23, 2008 at 8:59pm by matt

chemistry
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction ?
Saturday, December 4, 2010 at 5:39pm by obi

science
If the calcium carbonate is in powder form, the surface area available for reaction is larger, thus a higher probability of reaction contact.
Wednesday, July 13, 2011 at 8:31am by bobpursley

chemistry
Balance the following redox reaction using the half reaction method: NaIO3+KI==> I2+H20+Na(+1)+K(+1)
Monday, November 7, 2011 at 10:11pm by steve

physics
Refering to reaction 2 H2(g) + O2(g) -> 2 H2O(g) and proving that the law of conservation of mass is obeyed during a chemical reaction.
Friday, March 2, 2012 at 3:44am by Belly.L

Chemistry
A reaction yields 3.75 L of nitrogen monoxide. The Volume is measured at 19 *C and a pressure of 1.10 atm. What mass of NO was produced by the reaction?
Monday, April 9, 2012 at 6:13pm by CHEMMY

Chemistry
Consider the reaction when aqueous solutions of manganese(II) sulfate and barium bromide are combined. The net ionic equation for this reaction is:???
Sunday, November 4, 2012 at 2:23pm by Kristyn

chemistry
Consider the reaction between hydrogen and oxygen gases to form water: 2H2(g) + O2(g) ¨ 2H2O(l) Which of the following is not conserved in this reaction?
Monday, September 30, 2013 at 10:33pm by amanda

chemistry
The equilibrium constant, Kp, for the following reaction is 2.74 at 1150 K. Calculate Kc for this reaction at this temperature. 2SO3(g) 2SO2(g) + O2(g)
Sunday, March 9, 2014 at 2:52pm by Anonymous

chemistry
In this case I wrote it on the correct side which is the right side. In any case however, remember that -delta H means the reaction is exothermic and + delta H means the reaction is endothermic. Look at this reaction; the problem tells you that delta H is -20 kJ/mol which ...
Tuesday, April 3, 2012 at 6:06pm by DrBob222

Math
x + y is an expression. So is sqrt x or y^3. it is anything that tells you how to compute a number when you are given the values of certain variables. You cannot solve for a variable with just an expression. If you have an equation with one variable, there will usually be ...
Tuesday, May 5, 2009 at 10:53am by drwls

English/Poetry
What is the poem about? Consider what the poem is describing. Consider the title. What image is being painted with the descriptions? Why are certain words capitalized? What do certain words mean, and why were they specifically chosen? What does the poem reflect in regards to ...
Saturday, March 24, 2012 at 12:10am by Lital

chemistry
When the reaction is run in a buffer solution, however, it is pseudo-first-order in CH3I. rate = k[CH3] What is the half-life of this reaction in a pH 10.00 buffer if the pseudo-first-order rate constant for this reaction is 7.3 x10-9 s-1?
Friday, June 5, 2009 at 3:00am by anglo

chemistry
A reaction starts with 1.00 mol each of PCl3 and Cl2 in a 1.00-L flask. When equilibrium is established at 250 degree Celsius in the reaction PCl3(g)+ Cl2(g)--> PCl5(g), the amount of PCl5 present is 0.82 mol. What is Kc for this reaction?
Tuesday, October 26, 2010 at 12:49pm by Shanice

Chem
How would one balance the following redox reaction using the half reaction method? Fe(OH)2 + O2 + H2O ---> Fe(OH)3 This is in my chemistry teacher's homework, and it comes up with an answer, but I don't see how to use the half reaction method when there is only one ...
Tuesday, November 15, 2011 at 10:31pm by Jake UCD 11/15/11

Chemistry
Sodium azide (NaN3) yields N2 gas when heated to 300 degrees Celsius , a reaction used in automobile airbags. If 1.00 mol of N2 has a volume of 47.0 liters under the reaction conditions , how many liters of gas can be formed by heating 35g of NaN3? The reaction is 2Nan3------&...
Sunday, March 3, 2013 at 2:06am by K

chemistry
a) Look at Go = -RTlnK. If K >1 what's the sign of Go? b)It DOES imply a strong driver for the reaction BUT ".....and the reaction will be rapid" it has nothing to do with the speed. We can have huge K values but the reaction proceeds so slow it will take centuries to ...
Sunday, March 28, 2010 at 4:33am by DrBob222

Chemistry
Consider the following reaction occurring at 298K BaCO3(s)-> BaO(s) + CO2 (g) show that the reaction is not spontaneous under standard condition by calculating delta G rxn. I calculated delta G and got 219.7 kJ, now the question asks if BaCO3 is placed in an evacuated flask...
Sunday, April 24, 2011 at 10:31pm by Trista Nigh

chemistry
When the concentration of CH3Br and NaOH are both 0.150M, the rate of the reaction is 0.0020M/S. (a) What is the rate of the reaction if the concetration of CH3Br is doubled? _______________M/s (b) What is the rate of the reaction if the concentration of NaOH is halved? ...
Wednesday, February 27, 2013 at 1:49pm by dj

chemistry
This is an exercse in Le Chatelier's principle. Students get confused over this but here is what you do. Just make the reaction go so as to undo what the problem does. I'll do the first one. 2NO2 <==>N2O4 + heat. 1. We increase T. So the reaction gets hotter. The ...
Saturday, May 8, 2010 at 8:15pm by DrBob222

Chemistry
True and False... 1. A thermodynamically favorable reaction also proceeds spontaneously. I think that it is false? 2. Doubling the concentration of a reactant always causes the reaction rate to double. 3. a reaction that has a large activation energy in the forward direction ...
Sunday, November 15, 2009 at 4:42pm by Christina

science
well, it is likely to smell after a few days. So do it outside. I would plant two lima bean seeds in each pot, water one with water, the other with milk. Take daily observations. Be certain to use the same amount of fluid each time. Make certain the pots have holes in the bottom.
Monday, March 7, 2011 at 8:05pm by bobpursley

chemistry
Consider the following reaction. 2KClO3(s) → 2KCl(s) + 3O2(g) a. How many grams of KCl are produced from the complete reaction of 2.16 mol of KClO3? 161g b. How many grams of KCl are produced from the complete reaction of 52.7 g of KClO3? 32.1 g
Monday, February 13, 2012 at 2:23pm by krystal

CHEM
I posted a question earlier, and i'm still abit confused. What is the reaction between potassium and aqueous sodium chloride? I was told that the products are KOH, H2, and KCl. But shouldn't the reaction be a displacement reaction? Since Potassium is more reactive than sodium...
Wednesday, October 21, 2009 at 2:57am by Marrion

Chemistry
Consider the following reaction: H2+I2<->2HI A reaction mixture at equilibrium at 175 K contains P(H2)=0.958 atm, P(I2)=0.877 atm, and P(HI)=0.020 atm. A second reaction mixture, also at 175 K, contains P(H2)=P(I2)=0.616 atm, and P(HI)=0.106 atm. What will the partial ...
Monday, April 4, 2011 at 12:48am by Brooke

chemistry
For the following reaction in aqueous solution: HNO2(aq) + NO3-(aq) HNO3(aq) + NO2-(aq) The net reaction will proceed from: a. ) left to right b. ) right to left c. ) the reaction will not occur would the answer be c) because each side of the the equations has one weak ...
Sunday, November 2, 2008 at 12:09pm by Anonymous

chemistry
The reaction of the ferric ions with isocyanate ions is an exothermic reaction. In what direction would you expect the equilibrium to move if the solution temperature is raised? Would the color of the reaction intensify? Explain. What would happen if you decreased the ...
Sunday, August 15, 2010 at 2:18pm by Anonymous

help please :)
I think if you are doing that you deserve to have start over. You should have written the second draft long ago. If you are revising and editing, and "rearranging" the content, I wonder what you were doing in the last two weeks? I would do a final proofread, making certain the...
Thursday, September 29, 2011 at 4:19pm by bobpursley

statistics
1. A professor measured the time (in seconds) required to catch a falling meter stick for 19 randomly selected students’ dominant and non-dominant hand. The professor claims that the reaction time in an individual’s dominant hand is less than the reaction time in their non-...
Sunday, November 24, 2013 at 3:33pm by arshi

math
A professor measured the time (in seconds) required to catch a falling meter stick for 19 randomly selected students’ dominant and non-dominant hand. The professor claims that the reaction time in an individual’s dominant hand is less than the reaction time in their non-...
Monday, December 2, 2013 at 8:19pm by anonymous

Chemistry
Just a few questions about rates of reaction. A) Why are the units for average and instantaneous rates the same? -because they are both measures of how quickly a reaction is occuring per unit time B) For a given set of data, two students determined different average reaction ...
Sunday, May 16, 2010 at 2:59pm by Jamie

Chem
Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies to estimate the enthalpy delta H (rxn) of the following reaction: 2SF4 + O2 ---- 2OSF4 Express your answer numerically...
Wednesday, November 12, 2008 at 11:27pm by Dr BOB plz ANSWER

Algebra 2
So the first thing I wonder about is significant digits, you may not know about that,but your answer to four places when one (5 miles) is given is a stretch in the real world. he went 98miles in 2 hours. 93=certainspeed*time1 5=(certainspeed-5)(2-time1) so solve for time1 in ...
Friday, April 1, 2011 at 1:54am by bobpursley

chemistry
The isomerization reaction H3CNC(g) <=> H3CCN(g) was found to be first order in H3CNC. At 600 K, the concentration of H3CNC is 75% of its original value after 205 s. (a) What is the rate constant for this isomerization reaction at 600 K? (b) At what time will 33% of the ...
Wednesday, August 6, 2008 at 12:20am by Alexis

chemistry
In a reaction involving the iodination of acetone, the following volumes were used to make up the reaction mixture: 10 mL 4.0 M acetone + 10mL 1.0 M HCL + 10 mL 0.0050 M I2 + 20 mL H2O A student found that it took 250 seconds for the color of the I2 to disappear. What was the ...
Monday, July 26, 2010 at 7:15pm by Paul

Chemistry
Phosphorous trichloride (PCl3) is produced from the reaction of white phosphorous (P4) and chlorine: P4(s) + 6Cl2(g) ! 4 PCl3(g) . A sample of PCl3 ofmass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage yield of the ...
Wednesday, March 23, 2011 at 7:45pm by Jonathan

Chemistry
What kind of reaction is this (redox, precipitation, acid-base, or complex ion formation reaction)? 1. 3 Ca(s) + 2 Al^3+(aq) -> 3 Ca^2+(aq) + 2 Al(s) 2. LiHCO3(s) + heat -> Li2CO3(s) + CO2(g) + H2O(g) Complete the reaction: Ni(s) + 2 Na^+(aq) -> ?
Monday, October 21, 2013 at 7:04pm by Fred

science
When an acid and an alcohol react does it produce an ester? If so ehat type of reaction is this? I call it esterification. It is also an elimination reaction in that water is eliminated.
Monday, March 12, 2007 at 6:07pm by Gemma

chemistry... please help!
A mass of 11.6g of phosphoric acid was produced from the reaction of 10g of P4O10 with 12g of water. What was the percent yield for this reaction?
Monday, October 5, 2009 at 11:13am by Kelly

Chemistry
How much heat (in kilojoules) is released on reaction of 4.10 g of Al? Reaction: 2Al(s) + 3Cl2(g)--->2AlCl3(s) Delta H= -1408.4 KJ
Tuesday, February 16, 2010 at 8:58pm by Jackie

Chemistry
The reaction of 1,6-hexanediamine with hexanedioic acid chloride to form nylon 6-6 is a condensation polymerization. What is the small molecule that is split off in each step of the reaction?
Wednesday, February 24, 2010 at 9:53pm by Holly

chemistry
For the reaction A to products}, the following data were obtained: t=0 s, A}]=0.715 M; 22 s, 0.605 M; 74 s, 0.345 M; 132 s, 0.055 M. What is the half-life of the reaction?
Sunday, February 28, 2010 at 6:31am by joe

chemistry
For the reaction A to products}, the following data were obtained: t=0 s, A}]=0.715 M; 22 s, 0.605 M; 74 s, 0.345 M; 132 s, 0.055 M. What is the half-life of the reaction?
Sunday, February 28, 2010 at 5:36pm by joe

chemistry
For the reaction A to products}, the following data were obtained: t=0 s, A}]=0.715 M; 22 s, 0.605 M; 74 s, 0.345 M; 132 s, 0.055 M. What is the half-life of the reaction?
Sunday, February 28, 2010 at 8:43pm by joe

Chemistry
what mass of acetylene, will be produced from the reaction of 90g of calcium carbide, with water inthe following reaction CaC2+2H2O-C2H2+Ca(OH)2
Monday, April 19, 2010 at 10:35pm by Kiara

chemistry
If the rate of a reaction doubles for every 10 C rise in temperature, how much faster does the reaction proceed at 45 C than at 25 C? Please help, thanks a lot!
Monday, May 17, 2010 at 10:56pm by hongkong

Chem12
Calculate Kp for the reaction N2(g) + 3 H2(g)--> 2 NH3(g) given that the reaction has Kc = 438,880,639 at a temperature of 265.
Monday, May 2, 2011 at 11:47pm by Ryan

Chemistry
When acetone, C3H6O, is oxidized via combustion, the following reaction can be envisioned. Balance this reaction and determine the total of the coefficients when added together.
Monday, October 10, 2011 at 4:52pm by Anonymous

High School Chemistry
Explain the reaction mechanism of the following reaction by showing the types of bond splitting and atom rearrangements. C + O2 = CO2
Sunday, November 20, 2011 at 11:00pm by Elijah Bowie

chemistry
decomposition of water to form elemental Hydrogen and Oxygen gas. What will be the balanced chemical equation, type of reaction and the driving force of the reaction?
Wednesday, October 3, 2012 at 3:09pm by shay

science
0.042g of Magnesium was reacted with excess HCl at S.T.P. A. Write the equation for the reaction B. How many moles of Mg were used? C. What volume of Hydrogen is produced in this reaction?_
Wednesday, November 28, 2012 at 9:30am by sai

Chemistry
True or False: A non-spontaneous reaction is converted into a spontaneous reaction in a voltaic cell by the expense of electrical energy. I believe it is true because in a non spontaneous reaction, energy must be induced in order for it to occur. Is this true?
Monday, November 29, 2010 at 8:26pm by James

chemistry
In what reaction? What are the amounts of each reactant in that reaction?
Sunday, January 11, 2009 at 9:45pm by GK

chemistry
Depends upon the reaction doesn't it? What's the reaction?
Tuesday, March 13, 2012 at 3:04pm by DrBob222

Chemistry
At a certain temperature, the equilibrium constant, Kc, for this reaction is 53.3. H2(g)+I2(g) <--> 2HI(g) Kc= 53.3 At this temperature, 0.300 mol of H2 and 0.300 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at equilibrium? HI...
Friday, March 8, 2013 at 10:38pm by Lisa

Chemistry
Add equation 1 to the reverse of equation 2 to equation 3. Then add the delta Hs; remember to reverse the sign if you reverse the reaction. The final reaction will be Ca(s) + 1/2 O2 --> CaO(s) Notice that everything else cancels. Delta H for the desired reaction will be -...
Sunday, February 21, 2010 at 7:44am by DrBob222

Calculus
for (a) since a < b , for a certain value of y , the value of (a - y) will become negative first, and thus the Rate becomes negative,, then after some time (b - y) will become negative too, and the Rate becomes positive. let's look at some points: at 0 <= y < a , Rate...
Sunday, April 10, 2011 at 12:23am by Jai

Chemistry
If at a certain instant during the course of the reaction 2 NO2(g) + F2(g) ¨ 2 NO2F(g), the rate of formation of the product were 0.16 mol/L∙s, how fast would the F2 be disappearing (also in mol/L∙s) at that same instant in time? A) 0.16 mol/L∙s B) 0.080 mol...
Monday, July 30, 2012 at 1:58pm by Taylor

Chemistry
It takes some energy, called the activation energy, that must be attained before a reaction takes place. If the activation energy is not present, no reaction takes place although we might predict that a reaction would occur.
Wednesday, November 17, 2010 at 11:17pm by DrBob222

chemistry
A mixture of hydrogen peroxide, H2O2, and hydrazine, N2H4, can be used as a rocket propellant. The reaction is: 7 H2O2(g) + N2H4(l) ® 2 HNO3(aq) + 8 H2O(l) a) How many moles of H2O2 react with 0.477 mol N2H4? [1] ___________ b) How many grams of HNO3 can be produced in a ...
Saturday, June 20, 2009 at 12:41am by dan

Chem
Ok, thanks. Couple follow ups: Q1: If [A] is doubled how does the reaction rate change? A: I put no change because 0th order cancels it out. Q2: If [B] is doubled how does the reaction rate change? A: I put it increases by a factor of 4 because of the squared term. Q3: How ...
Tuesday, January 29, 2008 at 10:57pm by Anonymous

cutural diversity
Should United States government policy favor certain kinds of immigrants? Should [citizenship] preference be given to the neediest applicants? The most talented? The most oppressed? The richest? Should applications from certain countries be given priority
Thursday, June 19, 2008 at 11:08am by juan

Chemistry
When 0.13 g of H2 and 0.18 g of I2 are confined to a 150. mL reaction vessel and heated to 700. K, they react by a second-order process (first order in each reactant), with k = 0.063 L·mol-1s-1 in the rate law (for the rate of formation of HI). (a) What is the initial reaction...
Friday, June 28, 2013 at 4:41pm by Sara

chemistry ASAP please!!
One reaction that destroys O3 molecules in the stratosphere is NO + O3  NO2 + O2 When this reaction was studied in the laboratory, it was found to be first order with respect to both NO and O3 with a rate constant of 1.9 x 104 mol L-1S-1. If [NO] = 1.2 x 10-5 mol L-1 ...
Sunday, March 20, 2011 at 6:48pm by Massiel

Chemistry
The rate law of a reaction, A-> B+C is given by the expression: Rate=k, where k=0.0113 mol/L min. If the initial concentration of the reactant is 0.225 mol/L, how long does it take for the concentration to decrease to 0.180 mol/L? I know i have to find the order of the ...
Tuesday, September 14, 2010 at 10:39pm by James

Chemistry
Consider the following reaction. 2KClO3(s) ¨ 2KCl(s) + 3O2(g) A)How many grams of KCl are produced from the complete reaction of 10.9 mol of KClO3? B)How many grams of KCl are produced from the complete reaction of 86.2 g of KClO3?
Tuesday, February 14, 2012 at 4:08pm by Kyle

Pre Calc
I dont really follow the question. Maximums occur when the argument of sine is PI/2, or certain multiples of that. Min occures when the arguement of sine is 3/2 PI, or certain arguments of that. I think that is what you are supposed to be doing, but frankly, I dont follow it.
Monday, December 7, 2009 at 6:27pm by bobpursley

Chem
The reaction equation is just the sum of equation 1 and equation 2. Therefore, Kc for the reaction equation is k1*k2 = 6.9E-13 ............N2 + 2O2 ==> 2NO2 I...........1.....2.......0 C..........-x....-2x......+2x E..........1-x..2-2x.......2x Substitute into Kc expression...
Sunday, October 7, 2012 at 9:45pm by DrBob222

college
For the reaction NO(g) + O3(g) „_ NO2(g) + O2(g) The frequency factor A is 8.7 X 1012 s-1 and the activation energy is 63kJ/mol. What is the rate constant for the reaction at 75 ¢XC?
Thursday, May 14, 2009 at 9:56pm by Kelvin

chem
for a combination reaction, it was calculated that 7.59g of A would exactly react with 4.88g of B. these amounts were reacted, and 9.04g of product was isolated. what was the percentage yield of reaction??
Wednesday, November 10, 2010 at 8:03pm by julia

chemistry
What chemical reaction is responsible for the endpoint observed when the NH3/NH4Cl buffer solution is titrated with HCl? Write a blanced ionic equation for the reaction.
Sunday, March 27, 2011 at 7:21pm by redgy

Chemistry
Kp for the following reaction is 0.16 at 25°C. 2 NOBr(g) (reverse reaction arrow-> <-) 2 NO(g) + Br2(g) What happens when you decrease and increase volume?
Tuesday, May 24, 2011 at 11:33am by Kat

Chemistry
How many grams of fluorine are needed to produce 120. g of phosphorus trifluoride if the reaction has a 78.1% yield from the following reaction: P4+6F2 -> 4PF3
Tuesday, January 10, 2012 at 9:48pm by Anonymous

Chemistry
A particular reaction has an activation energy of 51.6kJ/mol-rxn. How much faster is the reaction at 50 degrees C versus 25degrees C? I do not know how to start this!
Wednesday, February 29, 2012 at 9:34pm by Hannah

chemistry
The reaction x products follows Ist order kinetics in 40 minutes the concetration of x changes from 0.1M to 0.025M then the rate of reaction when conc of x is 0.01
Friday, April 26, 2013 at 5:04am by ameer

ochem
Give the reaction products of sodium borohydride (followed by water addition at the end of the reaction) with the following compounds: a) Acetone b) m-nitroacetophenone c) 3-buten-2-one
Tuesday, May 7, 2013 at 11:32pm by ang

chemistry
For the following reaction in acidic solution. Cr2O7^2- + I- ---> Cr^3+ + IO3- give the balanced half reduction reaction. Indicate the oxidizing species.
Monday, June 17, 2013 at 4:46pm by Annie

Math
Why are these poor models for a parabola, Where a ball starts a a certain point and then is hit to reach a maximum height (vertex) and then lands at a certain point i. y = -0.002x(x - 437.1) ii. y = -0.5x + 216x + 3 iii. y = -0.002x + 0.879x + 3.981 iv. y = -0.002x + 0.8732x...
Monday, January 23, 2012 at 8:43pm by HUNU

chem class
The data in the table below were obtained for the reaction: A + B → P 3 Experiments 1 (A) (M): 0.273 (B) (M): 0.763 Initial Rate (M/s): 2.83 2 (A) (M): 0.273 (B) (M): 1.526 Initial Rate (M/s): 2.83 3 (A) (M): 0.819 (B) (M): 0.763 Initial Rate (M/s): 25.47 1) The order of...
Sunday, October 24, 2010 at 4:35pm by jack ross

chemistry
Calculate the temperature at which it is thermodynamically possible for C (s) to reduce iron(III) oxide by the reaction: 2Fe2O3 (s) + 3 C (s) ---> 4Fe (s) + 3CO2 I don't need a specific answer, but I'm not sure how to approach the problem. I'm assuming it has to do with ...
Thursday, February 28, 2013 at 10:15pm by Janet

Accounting
An estimated liability: 1. Is an unknown liability of a certain amount. 2. Is a known obligation of an uncertain amount that can be reasonably estimated. 3. Is a liability that may occur if a future event occurs. 4. Is not recorded until the amount is known for certain. (...
Tuesday, April 1, 2014 at 2:41am by Jessica

Chemistry
I need some help with writing reactions. I have the following to write out: a. the hydration of copper sulfate b. the reaction of liquid sulfuric acid to form aqueous sulfuric acid c. the reaction of calcium oxide w/ water to form calcium hydroxide For a, I know copper sulfate...
Sunday, October 4, 2009 at 6:48pm by Nikki

Chemistry
The only factors that effect the rate of reaction are the temperature used for heating, concentration of your reactants , physical state of your reactants, pressure and the catalyst used. However, reducing the volume of the reaction vessel increases the number of collisions so...
Monday, March 8, 2010 at 1:14am by Veronica

physics
Vo = 93 km/h = 25.8 m/s Lat a be the acceleration. Distance travelled during reaction time = 25.8 * (reaction time) Distance travelled while decelerating = Vo^2/(2|a|) Add the times. Anyone with a reaction time of 3.0 seconds should not be driving. Recheck the numbers in the ...
Friday, August 19, 2011 at 4:44pm by drwls

Chemistry
At 1200 K, the approximate temperature of vehicle exhaust gases, Kp for the reaction 2CO2(g)⇄2CO(g) + O2(g) is about 1*E-13. Assuming that the exhaust gas (total pressure 1 bar) contains 0.2% CO, 12% CO2 and 3% O2 by volume, is the system at equilibrium with respect to ...
Saturday, August 16, 2008 at 6:35am by Helen

Chemistry
When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced. O2M(s) ----> M(s) +O2(g) Delta G^o = 290.3 kJ/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What is the chemical ...
Sunday, March 23, 2014 at 3:10pm by Janavi

art
What exactly are modern and contemporary art? For school, I have to paint a piture that relates to a certain part of speech as well as a certain type of art era/period. I'm almost finished, so now i just want to know how to EXPRESS modern or maybe even contemporary art in my ...
Friday, November 21, 2008 at 7:22pm by Melanie

Hard Math
Why are these poor models for a parabola, Where a ball starts a a certain point and then is hit to reach a maximum height (vertex) and then lands at a certain point i. y = -0.002x(x - 437.1) ii. y = -0.5x + 216x + 3 iii. y = -0.002x + 0.879x + 3.981 iv. y = -0.002x + 0.8732x...
Tuesday, January 24, 2012 at 9:21pm by Ajunb

Chemistry Kinetics
If I had the equation H2 + I2 --> 2HI could I write the rate of reaction as d[H2 + I2]/dt = k[H2]^x[I2]^y were x is the order of reaction with respect to x and y is just the order of reaction with respect to y thanks
Wednesday, December 1, 2010 at 10:42pm by Kate

Chemistry URGENT! I really need help!
Consider the following reaction occurring at 298K BaCO3(s)-> BaO(s) + CO2 (g) show that the reaction is not spontaneous under standard condition by calculating delta G rxn. I calculated delta G and got 219.7 kJ, now the question asks if BaCO3 is placed in an evacuated flask...
Monday, April 25, 2011 at 1:09am by Trista Nigh

Chemistry
Is this an equilibrium reaction? If so, then we should write it as Mg(s) + O2(g) ==> MgO(s) Adding a solid will have no effect on the reaction at equilibrium. If you are thinking of Le Chatelier's Principle, the easiest way to think of this is that a system at equilibrium ...
Sunday, July 3, 2011 at 7:59pm by DrBob222

science
Describe the relationship between substrate concentration and the initial reaction rate of an enzyme-catalyzed reaction. Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases?
Monday, August 1, 2011 at 8:03pm by Ron

chemistry
I did an experiment where i put iron nail with zinc metal wrapped around it in agar solution. the solution turned pink. I have to find the anode: anode reaction: cathode (remember, a metal can be an inactive electrode): cathode reaction (there aren’t any metal ions present, so...
Tuesday, March 10, 2009 at 11:04pm by Anonymous

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