# why would lowering the temp and decreasing the pressure not increase the rate of the reaction: carbon monoxide gas is combusted in the presence of oxygen gas into carbon dioxide. (DeltaH for this reaction is -285kJ.) CO + O2 ==>

47,891 questions
1. ## chemistry

why would lowering the temp and decreasing the pressure not increase the rate of the reaction: carbon monoxide gas is combusted in the presence of oxygen gas into carbon dioxide. (DeltaH for this reaction is -285kJ.) CO + O2 ==> CO2 + heat decreasing P

asked by alexa on April 29, 2007
2. ## Chemistry

The reaction 2NO (g) + 2H2 -> N2 (g) + 2H2O (g) was found to follow the rate law, rate = k[NO]^2[H2]. By what factor will the rate of reaction increase when the pressure of NO gas is increased from 2.0 atm to 3.0 atm? Assume all other conditions are held

asked by Mikey on July 13, 2016
3. ## chem plz help!

the rate of a nuclear reaction can be changed by?? i know adding a catalyst to a normal reaction can but to a nuclear im not sure. increasing temp decreasing pressure adding a catalyst none I suppose it all depends upon how you define a catalyst. Perhaps

asked by luis on April 30, 2007
4. ## science

2. With an increase in altitude, air pressure: a. Increases at a constant rate b. Increases at a decreasing rate c. Decreases at a constant rate d. Decreases at a decreasing rate e. Decreases at an increasing rate answer: e 4. The addition of water vapor

asked by ~ on October 6, 2018
5. ## chemistry- can you check my answers?

can you please check my answers?? 9. For the following reaction delta H=2816 kj. 6 CO2(g) + 6 H2O(l) -> C6H12O6(s) + 6O2(g) how is the equilibrium yeild of C6H12O6(s)affected by each of the following? a) increasing pressure of CO2 increase decrease no

asked by Lily on April 20, 2011
6. ## chemistry

Study the reaction. A(s) + 2BC(aq) →AC2(aq) + B2(g) ΔH = −92.0 kJ/mol Which change would increase the rate of the forward reaction? A. increasing the pressure B. adding more of A(s) C. adding water D. decreasing the temperature B?

asked by madison on June 8, 2018
7. ## Chemistry

The main reason for the increase in reaction rate with temperature is that: The activation energy increases rapidly with temp (I think it is this one) A 10 C temp rise results in the rate doubling heats acts as a catalyst or The fraction of high-energy

asked by Linda on February 9, 2013
8. ## Chemistry

I have read Le Chateliers principle but am having a little trouble explaining the effect of pressure and temperature on the equilibrium yield of methanol (CH3OH). Can anyone also tell me the effect of the increase of temp will have on the rate of the

asked by Bean on March 11, 2007
9. ## science

Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would

asked by anonymous on January 2, 2011
10. ## science

Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would

asked by anonymous on January 2, 2011
11. ## Chemistry

What will happen to the number of moles of SO3 in equilibrium with SO2 and O2 in the following reaction in each of the following cases? 2 SO3(g) equilibrium reaction arrow 2 SO2(g) + O2(g) ΔH° = 197 kJ (a) Oxygen gas is removed. increase decrease stay

asked by Sally on March 15, 2015
12. ## chemistry

Doing review for an exam and I can't find how to do this problem in my notes. 2 SO2 + 2 Cl2 -----> 2 SOCl2 + O2 from a previous problem I solved: rate=k[SO2]^2[Cl2] k = 467.666666... or in sig. figs 467 Energy reaction: T= 25 C The activation energy (Ea)

asked by energy diagram on July 13, 2011
13. ## chemistry

Doing review for an exam and I can't find how to do this problem in my notes. 2 SO2 + 2 Cl2 -----> 2 SOCl2 + O2 from a previous problem I solved: rate=k[SO2]^2[Cl2] k = 467.666666... or in sig. figs 467 Energy reaction: T= 25 C The activation energy (Ea)

asked by energy diagram on July 14, 2011
14. ## chemistry

Which of the answer choices correctly describes an action that will increase the solubility of a solid solute in water? cool the solution increase the pressure heat the solution decrease the pressure Examine the statement. The energy required to break the

15. ## Chemistry

Given the reaction NH3(g) + O2(g)--> NO(g) + energy, in what direction will the reaction shift if you: a)remove O2 (g) b)increase the pressure by decreasing the volume c)decrease the temperature d)add a catalyst

asked by Arianna on April 8, 2012
16. ## science

If the reaction is at equilibrium, which change will help to increase the amount of ammonia formed? 3H2(g) + N2(g) 2NH3(g) + heat A. Removing nitrogen B. Raising the temperature C. Lowering the pressure D. Adding hydrogen

asked by logan on September 14, 2016
17. ## Chemistry Eq. Question

3H2(g) + N2(g) reverse reaction arrow 2NH3(g) What factors would affect the equilibrium constant for the reaction above? (Select all that apply.) increasing the H2 concentration decreasing the NH3 concentration increasing the temperature decreasing the

asked by Jeena on March 29, 2010
18. ## AP Chemistry

Which action(s) will decrease the equilibrium concentration of a non-reacting gas in water? 1. decreasing the temp. of the water 2. decreasing the volume of water 3. decreasing the pressure of the gas above the liquid a. 1 only b. 2 only c. 3 only d. 1 and

asked by Joe on April 4, 2008
19. ## Chemistry

1. For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E. Halves 2. if an equilibrium reaction shifts to the right when the

asked by josh on October 16, 2012
20. ## science

what does not increase the rate of a reaction? my answer is decreasing the concentration of the reactants. am i correct

asked by student on March 20, 2019
21. ## Chemistry

C6H12O6 (aq) = 602 (g) - 6CO2 (g) = 6H20 (l) H -2837 A)Exo or endothermic? B)write an expression for the equilibrium constant C)Give the value of the equilibrium constant is very large, would this reaction be fast or slow? D)effects of equilibrium if.. i.

asked by Caitie on April 29, 2015
22. ## Chemistry

Generally, the solubility of gases in liquids increase with a-decreasing temperature & increasing pressure b-increasing temperature & decreasing pressure c-decreasing temperature & decreasing pressure d-increasing temperature & increasing pressure

asked by Mary on July 23, 2010
23. ## OCHEM

What would be the effect of decrease the carrier gas flow rate, raise the column temp, have on the retention time? What would be the effect of raise the column temp and decrease the carrier gas flow rate on the ability to resolve two closely spaced peaks?

asked by Sarah on December 22, 2009
24. ## chemistry

The rate law of the overall reaction. A + B -> C is rate = k[ A ]^2 Which of the following not increase the rate of a chemical reaction? a) increasing the temperature of the reaction b)increasing the concentration of reaction A c)adding a catalyst for the

asked by ben on November 18, 2010
25. ## Chemistry 101

Which of the following will not increase the rate of a reaction? a. using a catalyst b.increasing the temperature c. decreasing the concentration of a reactant d. finding a shorter path for the reaction to take place e. increasing the kinetic energy

asked by Robert on October 25, 2009
26. ## Chemistry

Consider the reaction 2A (g) + B (g) --> C (g) At 300K temperature, pressure of A and B are 2*10^5 Pa. The temperature is kept constant and let the reaction occur. After 5 mins the total pressure of the system os 3.5*10^5 Pa. Question : When the pressure

asked by Ashley on January 13, 2019
27. ## AP Chem

Which of the following conditions would most likely affect the rate of a chemical reaction? A. Increasing the number of reaction steps B. Decreasing the size of the reaction vessel C. Increasing the concentration of reactants D. Decreasing the amount of

asked by Andrea on February 26, 2018
28. ## Chemistry

The lab we are doing is: Determining the ENTHALPY of a Chemical Reaction. There are three reactions. Reaction 1: NaOH + HCl, Reaction 2: NaOH + NH4Cl, and Reaction 3: HCl + NH3. I found the max temp, initial temp, and temp change of each reaction. Can you

asked by Rina on October 29, 2017
29. ## Chemistry

Please help me on this for my Midterm Review thank you very much... 1.For the reaction 2N2O(g) ⇋ O2(g) + 2N2(g), what happens to the equilibrium position if the pressure decreases? A. Shift to the right B. Shift to the left C. Doubles D. Does nothing E.

asked by Jessie on October 16, 2012
30. ## Physics

Suppose that there is a partial blockage of the aorta, which normally pumps about 5 L of blood per minute. If the diameter of the aorta were reduced by 30%, what increase in blood pressure gradient would be needed to obtain the normal flow rate? (Assume

asked by Tim on January 18, 2013
31. ## chemistry reaction rate

2NO(g) + O2(g) → 2NO2(g) + 112 kJ what do you do to increase the reaction rate? decrease in pressure or increase in concentration of NO? HELP!

asked by mikki on January 9, 2011
32. ## Chemistry

Write rate law expressions? 2NOCl(g) --> 2NO(g) + Cl2(g) S2O3^2-(aq) + H^+(aq) --> HSO3^-(aq) + S(s) (Sulfur initially forms a colloid solution so it can be treated as aqueous.) (1) Write the rate law expression for the above reactions, assuming these are

asked by Donna on May 21, 2008
33. ## AP Chem

RATES: If you double the concentration of reactant A in the reaction A + 2B ¨ C, what happens to the rate based on the rate law, rate = [A]2 [B]3? The rate would ___ by a factor of ___. increase, 2 increase, 4 decrease, 2 decrease, 4 I can't read some

asked by Chemwiz on January 23, 2007
34. ## chemistry

1. Chemical reactions may occur when two different molecules collide. The frequency and energy of the collisions determine how many reactions occur. How would you expect that frequency of collisions in a gas to change if the temperature changes from 293 K

asked by Sarah on January 18, 2010
35. ## chemistry

The reaction A + B + C = products has a rate law rate = kA]C]2. Which of the following will result in an increase in the rate constant for the reaction? #1 - increasing the temperature #2 - adding a catalyst #3 - doubling the concentration of reactant C a.

asked by elvis on February 17, 2012
36. ## Chemistry

I have this question in front of me concerning Methanol (CH3OH) & how geseous methanol is formed via the following thermochemical equation: CO(g)+2H2(g)¡êCH3OH(g)∆H=-90kJ . Now, it asks me (explanations should show a clear understanding of how Le

asked by Travis on February 7, 2007
37. ## Chemistry 30

Consider the following reaction at equilibrium: 4NH3(g) + 5O2(g) ↔ 4NO(g) + 6H2O(g) In what direction will the following changes force the reaction? a) Addition of O2 b) Reduction of the amount of water vapour c) Increase in the pressure d) Decrease in

asked by Ade on September 30, 2014
38. ## Chem.

10. Suggest how two very different variables could be manipulated to increase the percent yield of sulphur trioxide. The equation for the reaction follows. 2 SO2(g) + O2(g)>>> 2 SO3(g) + energy Ok, I really don't know this one. Can you please help? Thanks!

asked by Dave on July 24, 2006
39. ## chemistry

1.equillibrium constant only changes for change in temp? not for change in pressure etc. 2. rate of reaction can be measure by measuring how long it takes for products to form or how long it takes for reactants to be consumed? so is the rate of consumption

asked by billy on July 20, 2009
40. ## Chemistry

I am having great difficulty with the following questions. Any and all help will be greatly appreciated. I have read the chapter and even looked up online tutorials. I still do not understand it. 2 NO (G) + O2 (G) > 2 NO2 (G) Write the equilibrium constant

asked by Lissa on September 22, 2014
41. ## Chemistry (URGENT)

Suppose a reaction involved a finely ground powder reacting with a concentrated acid. Suggest three methods of decreasing the reaction rate. 1. By placing the reactants in cold water. 2. ? 3. ? Can someone please help? I can't think of what else I can do

asked by John on March 2, 2010
42. ## Chemistry (urgent)

Suppose a reaction involved a finely ground powder reacting with a concentrated acid. Suggest three methods of decreasing the reaction rate. 1. By placing the reactants in cold water. 2. ? 3. ? Can someone please help? I can't think of what else I can do

asked by John on March 2, 2010
43. ## Chemistry Lab

What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

asked by Sunshine on July 20, 2009
44. ## Chemistry Lab

What would happen to the reaction rate of a solution if 10 mL or more of water is added? Will the reaction rate increase or decrease? The following reaction occurs without a change in the color 2A (g) + B2(g) --- 2AB (g) a) How could you monitor the

asked by Sunshine on July 20, 2009
45. ## Psychology

Meditation results in an altered state of consciousness by: A. reducing the activity level. B. lowering the heart rate. C. decreasing the use of oxygen. D. refocusing attention.

asked by Angela on May 20, 2013
46. ## Chemistry

I need to calculate the mass of CO2 produced in the reaction of NaHCO3 + HCl Data Mass of NaHCO3 = .05g Mass of system before reaction 117.9 g Mass of system after reaction 117l98 Maxium pressure 1.4094 initial pressure 1.0094 pressure change .4 temp

asked by Sarah on June 24, 2014
47. ## chemistry

to increase therate of solvation of carbon dioxide, what must a scientist consider? should they decrease the temp and increase the pressure, or vice versa?

asked by debby on March 31, 2010
48. ## chemistry

to increase therate of solvation of carbon dioxide, what must a scientist consider? should they decrease the temp and increase the pressure, or vice versa?

asked by debby on March 31, 2010
49. ## Chemistry

1) The rate expression for the reaction 2 SO2 + O --> 2 SO3 is given by rate = k [SO2]2[O2]. The overall order of this reaction is: first order 2)The rate reaction between A and B is expressed as rate = k [A][B]. To produce the greatest increase in the

asked by Anonymous on December 23, 2007
50. ## Chemistry

Given the equilibrium reaction N2(g) + 3 H2(g) 2NH3(g) + heat, an increase in temperature will: a) Increase the value of K b) Decrease the value of K c) Increase or decrease the value of K depending upon the concentration of reactants d) Will have no

asked by Chloe on April 20, 2014
51. ## Algebra

Tire pressure is directly proportional to temp on a temp scale where zero degrees is absolute zero. given that temp in degrees celcius and degrees Fahrenheit are related by the formula F=9/5C +32 and absolute zero is -273.15C, by what % does tire pressure

asked by Grace on October 18, 2016
52. ## Biology

Hey I am doing a lab, the link is down h t t p : //w w w . sd67 . bc . ca/schools/salc/biology%2012/module%20c%20-%20human%20biology/unit%2010%20-%20respiratory%20system/Homeostasis%20Lab .pdf And I really would like help with #1 My data is right here Pre

asked by Shreya on February 7, 2013
53. ## 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

asked by Mega on April 6, 2013
54. ## Chemistry

Can someone please check the following answers for me...THANK YOU! 1)Raising the temperature of a reacting system increases the rate of reaction but does NOT increase the: NUMBER OF COLLSIONS 2)Activation energy is: AN ENERGY BARRIER BETWEEN REACTANTS AND

asked by Anonymous on December 20, 2007
55. ## 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

asked by Sara on June 28, 2013
56. ## Chemistry

I'm reviewing for a test and I'm on Le Chatelier's principle. Decreasing the temperature of an exothermic reaction shifts the equilibrium to the right? I understood this weeks ago but now I can't remember. Wouldn't decreasing the temperature cause there to

asked by a Canadian on April 9, 2013
57. ## Chemistry.

Which of the following changes will increase the amount of solid solute able to be dissolved in a liter of liquid water? decreasing pressure increasing temperature decreasing temperature increasing surface area

asked by Valentina on March 31, 2011
58. ## Chemistry

If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant there will be no effect on the: (1) rate of the forward reaction (2) rate of the reverse reaction (3) activation energy of the reaction (4) heat of reaction

asked by Jazmin F. on March 9, 2011
59. ## Chemistry

Consider the chemical reaction C + H2O -----> CO + H2 How many liters of hydrogen gas are formed From the complete reaction of 1.07 mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and the temperature of 315K So I'm looking for

asked by Monique on October 19, 2011
60. ## Chemistry

1. The following data was collected for the reaction between hydrogen and nitrogen monoxide. The time recorded corresponds to a N2 concentration change of 5.3 x 10-4 M. 2H2(g) + 2NO(g)  2H2O(g) + N2(g) Trial [H2], M [NO], M Time, s 1 0.01 0.02 74 2 0.02

asked by Jason on June 4, 2013
61. ## Chemistry

The rate of a reaction A ---> B is expressed by the rate expression rate=k(A)2. If the molar concentration of A is tripled, the rate of the reaction should increase by a factor of some many?

asked by Marcus on February 9, 2013
62. ## science

What can happen to the reaction rate of a system that is heated and then cooled? Your question isn't quite clear; however, reaction rates increase, generally, with increase in T and decrease with decrease in T. Another way to interpret the problem is that

asked by Shandra on April 16, 2007
63. ## Science

Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. Answer: increasing TEMPERATURE 2.) Question: a mixture of baking powder,

asked by Please on January 15, 2014
64. ## Biology

Pick the correct answer, and explain why it is correct. If the pressure in the thoracic cavity increases and the pressure in the ventricles due to venous return remains the same, A. Stroke volume will decrease B. heart rate will decrease C. Cardiac output

65. ## Chemistry

Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system:

asked by Anonymous on February 19, 2013
66. ## chemistry

Given: 2so2 + o2 -> 2so3 + 44kcal Which change increase the concentration of so4? a. increasing temperature b. increasing the concentration of o2 c. decreasing the pressure d. decreasing the concentration of so2

asked by velma on January 22, 2015
67. ## chemistry

For the reaction N2O4(g) ---> 2NO2(g) ,which of the following disturbances will cause an increase in NO2(g) concentration? 1. a decrease in temperature 2. removal of some N2O4(g) 3. need H for the reaction to predict 4. an increase in temperature 5. an

68. ## chemistry

if the concentration of all the reactants doubled, what works happen to the rate I know the reaction rate would increase, but in a previous example it asked the question and the answer was that the rate increases by 16 and I can't figure out how much it

asked by alyssa on March 10, 2015
69. ## Chemistry

The oxidation of iodide ions by arsenic acid in acidic aqueous solution occurs according to the net reaction H3AsO4 + 3I – + 2 H3O +→ H3AsO3 + I3– + H2O. The experimental rate law for this reaction is Rate = k [H3AsO4] [I–] [H3O+]. According to the

asked by Jenna on April 22, 2017
70. ## 11th grade chemistry

a vessel contains 12 gm of methane gas at t degree celcius temp. and 1 atm. pressure. when the temp. is increased by 10 degree celcius at the same volume, the pressure increases by 10%. calculate the volume and initial temp.

asked by help on November 8, 2010
71. ## Phase

http://en.wikipedia.org/wiki/Melting_point Question: A solid substance has a vapor pressure of 100 mmHg at the melting point (100C). Assuming an atmospheric pressure of 760 mmHg, describe the behavior of this solid as the temperature is raised from room

asked by Lance on November 13, 2006
72. ## Chemistry

Organic chemists state that the rate of a chemical reaction can be doubled by increasing the reaction temperature by ten degrees Celsius. Explain this drastic increase in reaction rate using the concept of reactins and kinetic molecular theory

asked by Celia on March 31, 2010
73. ## Chemistry

Before a chemical reaction reaches equilibrium, A. the reaction rates of the reactants and products increase. B. the reaction rate of the reactants increases and the reaction rate of the products decreases. C. the reaction rates of the reactants and

asked by soco on August 9, 2015
74. ## hey got a question here

hey if dy/dx= -2 why is it wrong to say that y is alwats decreasing at a rate of -2? I don't really get it. It is better to say that y is always decreasing with a slope of -2 on a graph of y(x), or at a rate of -2 per change in x. Saying that a rate is a

asked by David Lee on December 7, 2006
75. ## Chemistry II

Here is information that you will need to help me solve my poblem: C. (Given the values for m,p,and n caculate the rate constant k for each mixtureby simply substituting those orders, the initial concentrations, and the observed rate from the table....)so

asked by Sara on January 21, 2008
76. ## Ap chemistry

Suppose NaOH is added to the following system when it is at equilibrium. NH3 (aq) + H2O (l) = NH4 (aq) + OH (aq) a) in which direction will the reaction shift after the NaOH is added? b) will this stress increase or decrease the value of the reaction

asked by Ivey on March 5, 2015
77. ## Chemistry

Consider the reaction: 2N2O (g) 2N2 (g) + O2 (g) The values of Kc at different temperatures are: Which statement is correct at a higher temperature? A. The forward reaction is favoured. B. The reverse reaction is favoured. C. The rate of the reverse

asked by Yamini Singh on November 27, 2019
78. ## Chemistry

The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 125 kJ·mol-1 to 75 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 293 K, all other factors being equal?

asked by Sara on June 28, 2013
79. ## CHEMISTRY

We have this following gas equilibrium : H2 + Cl2 2HCl + 184 kJ then predict the following to know Le chatlier's prediction 1) adding Cl2 2) removing HCl 3) elevation of pressure 4) lowering of the temperature 5) removing H2 and lowering pressure 6) adding

asked by MAD on July 7, 2014
80. ## Chemistry

Sulfur trioxide gas, one of the causes of acid rain, is produced in the upper atmosphere when oxygen reacts with sulfur dioxide gas in the reaction shown below: 2SO2(g) + O2(g) 2SO3(g) deltaH0 = -197kJ The gases are placed in a reaction vessel and allowed

asked by Abbagail on April 6, 2012
81. ## chemistry

LeChatelier's Principle !!!! ? plz help me with this problem the following reaction may be used to remove sulfur compounds from power plant smokestack emission. 2HS(g) + SO2 >>>> 3S + 2H2O ...... DELTA h = -145 KJ the value of the euilibrium constant for

asked by klove12 on January 14, 2012
82. ## Physical Chemistry

The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 192 kJ·mol-1 to 72 kJ·mol-1. (a) By what factor does the rate of the reaction increase at 281 K, all other factors being equal?

asked by Mark on April 1, 2010
83. ## chemistry

The following reaction is at equilibrium at a pressure of 1 atm, in a closed container. NaOH(s) + CO2(g) NaHCO3(s); ΔH°rxn < 0 Which, if any, of the following actions will decrease the concentration of CO2 gas present at equilibrium? A. lowering the

asked by bme1 on April 23, 2010
84. ## Chemistry

Could Anyone please let me know if I'm right I think that is 1 and 2?? which of the following changes will increase reaction rate? 1. An increase in the concentration of reactants 2. An increase in temperature 3. Higher-energy collisions between reacting

asked by Amy on October 17, 2012
85. ## Dr Bob222

Can you help me with this please - Temp - 650 Pressure - 690mm Hg mass - 0.927g volume - 194cm3 How do I calculate the volume of the gas at a different temp? & at a different pressure? You can do this two ways. The simplest is P1V2/T1 = P2V2/T2

asked by bex on February 27, 2007
86. ## Chemistry

using kinetics explain: a.the increasing of concentration of reactants increases the rate of reaction. b.the addition of a catalyst increases the rate at which a reaction will take place. c.and increase in temperature increases reaction rate. d.a catalyst

asked by Chuck on March 3, 2008
87. ## Math

Marginal revenue the weekly revenue from the sale of emeralds at Eduardo’s Emerald Emporium (EEE) is decreasing at a rate of \$500 per \$1 increase in price and the price is decreasing at a rate of \$0.45 per additional emerald sold. What is the marginal

asked by Jennifer on October 21, 2014

Post a New Question Current Questions Homework Help: Science. NEED HELP PLEASE Posted by Kalie on Tuesday, January 14, 2014 at 11:04pm. Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of

asked by Please on January 15, 2014
89. ## science

A rigid container holds a gas at a pressure of 55kPa and a temp of -100.0 deg C. What will the pressure be when the temp is increased to 200.0 deg C?

asked by Anonymous on February 21, 2012
90. ## pre calc

the volume of a gas varies inversely as its pressure and directly as its temperature. A certian gas occupies a volume of 2.3L at a temp of 380 K and a pressure of 20 N/cm^2 find the volume when the temp is 342 K and the pressure is 10 N/cm^2

asked by wally on November 25, 2014
91. ## Chemistry

The gas phase reaction X+Y⇄ Z is first order in Y and second order in X. If the concentration of X is double and concentration of Y is tripled. The reaction rate would be increase by a factor of: then, Rate= k [x]^2[y] --> k[x]^4[y}^3 is this the correct

asked by ED on June 14, 2016
92. ## chemistry

State whether each of the following will increase,decrease or unchange when catalyst is added to the reaction and give an explanation for your answer please a) rate of reaction b)activation energy c)reaction enthalpy d)equilibrium of reaction

asked by Gift on July 9, 2011
93. ## Chemistry

Consider the reaction N2(g)+3H22NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases

asked by Jordan on May 4, 2016
94. ## Chemistry :((((

a gas occupies a volume of 5L at a temp. of 20C and a pressure of 1atm. what volume would it occupy at a temp. of 30C and a pressure of 1.1 atm.

asked by Amanda on April 12, 2012
95. ## Chemistry

The apparatus contains methane and oxygen at a temp of 383K. Here is the reaction: CH4(g) + 2O2(g) --> CO2(g) + 2H2O(g) solve for final pressures of all species and the final total pressure, For CH4 the volume = 1.164L the pressure = 6atm For O2 the volume

asked by Terry on October 13, 2015
96. ## Chemistry

Explain the following observation in terms of the collision theory, restricting each to about 25 words. NO(g) + O3(g)--> NO2(g) + O2(g) (a) An increase in temperature increases the reaction rate. (b) Compressing the gases into a smaller volume increases

asked by Patrick on January 20, 2011
97. ## Socials

Temperature decreases approximately 1degree Celsius for each 150 metres increase in altitude. 1. The temp at sea level is 25 degree Celsius A.) what will the temp be 1200m up the mountain? B.) what will it be at the top? (2250m) 2. The temp at the top of

asked by Roma on February 17, 2014
98. ## AP Chemistry

Hey guys! Stuck on some problems: 1)Consider the following chemical reaction between gases: 2N2O(g) + O2(g)->4NO(g) + heat The amount of O2 at equilibrium will be decreased by: 1. Adding more NO(g). 2. Increasing the pressure by decreasing the volume. 3.

asked by Allie on October 8, 2015
99. ## Chemistry

The chemical reaction N2(g)+ 3H2(g) 2NH3(g) is at equilibrium. An expirimenter increases the volume of the reaction chamber by 10%. Explain what happens to bith the forward and reverse reaction rates from the moment the volume is changed until equilibrium

asked by Chrissy on April 12, 2007
100. ## Chemistry

What is the activation energy for a simple A->B fist order type of reaction with the following rate constants at different temperatures? Temp rate constant (k) 310K 1.77 x 10-1s-1 480K 3.22 x 10^2s-1

asked by Kristi on December 7, 2011