# 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

23,145 results, page 24
1. ## AP Physics

A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed when she returns to her initial height?

asked by Vova on August 17, 2011
2. ## AP Physics

A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed when she returns to her initial height?

asked by Vova on August 17, 2011
3. ## AP Physics

A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed when she returns to her initial height?

asked by Vova on August 17, 2011
4. ## physics

is the height of a ball be thrown directly related to the initial velocity? if i were to graph initial velocity as y and height as x,would it be a linear trend?

asked by Anthony on January 29, 2017
5. ## Physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1500. At what altitude is the projectile's speed one-half its initial value?

asked by Turk on April 28, 2012
6. ## chemistry

How long would it take for the concentration of the reactant to drop to one-forurth its initial value? initial concentration of reactant=0.64mol/L half-life=30s

asked by saud on November 18, 2011
7. ## Physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1130 m/s. At what altitude is the projectile's speed three-fourths its initial value?

asked by Emily on November 15, 2009
8. ## physics

A projectile is launched vertically from the surface of the Moon with an initial speed of 1210 m/s. At what altitude is the projectile's speed two-fifths its initial value?

asked by Cam on April 25, 2014
9. ## AP Chemistry

(a) When 300.0 milliliters of a solution of 0.200 molar AgNO3 is mixed with 100.0 milliliters of a 0.0500 molar CaCl2 solution, what is the concentration of silver ion after the reaction has gone to completion? (b)Write the net cell reaction for a cell

asked by Jessica on April 5, 2010
10. ## Algebra

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -10t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in meters/sec and “k” is the initial height

asked by Martha on February 19, 2010
11. ## Chemistry

What should be the pH value of the solution to double the solubility of the ionic compound NX? Ka of HX=2*(10)^-5 M My thoughts on the question: Let the solubility of NX=x M 1) NX(s) N+(aq) + X-(aq) eq:con: x x (moldm-3) X^- HX + OH^- -->(2) HXH^+ + X^-

asked by Shenaya on July 12, 2017
12. ## 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= 288.9 Kj/mol When this reaction is coupled to the conversion of graphite to carbon dioxide, it becomes spontaneous. What

asked by Jerry on March 14, 2012
13. ## Chemistry

At a given temperature, the elementary reaction A B in the forward direction is first order in A with a rate constant of 2.60 x 10^-2 s^-1. The reverse reaction is first order in B and the rate constant is 8.50 x 10^-2 s^-1. What is the value of the

asked by Jessica on March 5, 2012
14. ## Physics

A 3kg block is attached to an ideal spring with a force constant k = 200N/m. The block is given an initial velocity in the positive direction of magnitude u = 12 m/s and no initial displacement (x o = 0). Find (10 marks) a. The amplitude and b. The phase

asked by Mathias on April 18, 2018
15. ## Physics

A 3kg block is attached to an ideal spring with a force constant k = 200N/m. The block is given an initial velocity in the positive direction of magnitude u = 12 m/s and no initial displacement (x o = 0). Find (10 marks) a. The amplitude and b. The phase

asked by Mathias on April 18, 2018
16. ## General Chemistry

Balance the following redox reaction in acidic and basic solutions: Fe(OH)2(s) + O2(g) --> Fe(OH)3(s) These are the steps my instructor gave us to balance redox reactions: 1. Divide into 1/2 rxns (reduction & oxidation) 2. Balance atoms other than H & O 3.

asked by Emily on April 3, 2013
17. ## Chemistry

What type of reaction is listed below? Prove that it is balanced by listing the number of elements on both side of the equation (reactants vs. products)? CH 3 COOH + NaHCO 3  NaCH 3 COO + H 2 CO 3 2. What type of reaction occurred with H 2 CO 3 from the

asked by Brandy on September 28, 2016
18. ## Chem

The accepted value for the enthalpy for the following reaction reaction is 466.85 kJ/mol. Mg + 2Hcl = MgCl2 + H2 Calculate the heat that would be generated if 5.00g of magnesium reacts with excess hydrochloric acid. I don't even know how to start this

asked by Serenity on December 6, 2016
19. ## chemistry

The typical battery used in a standard flashlight produced approximately 1.5 V. If the value for ΔG° of the reaction were −289,500 J, what would you calculate as the moles of electrons exchanged in the balanced redox reaction? I got 1 mols for

asked by Anonymous on November 21, 2011
20. ## Chemistry

A calorimeter contains 30.0 mL of water at 15.0 C. When 1.50 g of X (a substance with a molar mas of 46.0g/ mol is added, it dissolves via the reaction X (s) + H2O (l) ----> X (aq) and the temperature of the solution increases to 26.5 C. Calculate the

asked by Student on March 11, 2016
21. ## chemistry-lab

2.What does it mean to “follow the course of a reaction”? I would imagine it means to find the overall order of the reaction and make it in to a rate law equation. That's part of it. It can mean, in addition, to knowing any intermediates formed and how

asked by Rob on February 13, 2007
22. ## Chemistry

The given reaction, 2N2O5 4NO2 + O2, follows first-order kinetics and has an activation energy of 103 kJ mol-1. At 298 K, k = 0.0000354 s-1. What is the half-life (min) for this reaction at 338 K ? Round your answer to 3 significant figures.

asked by Kyo on November 11, 2010
23. ## Chemistry

250cm3 of 0.400moldm-3 NaOH and 250cm3 of 0.400moldm-3 HCl is allowed to react in a calorie meter. If the initial temperature of the system is 17.05 degree C and the final temperature is 19.55 degree C,Find the enthalpy of neutralization for the reaction.

asked by Anonymous on February 20, 2013
24. ## Chemistry

The following reaction is a step in the commercial production of sulfuric acid. 2SO2(g) + O2(g) 2SO3(g) The equilibrium constant is very high at room temperature, but the reaction is very slow. It must be run at high temperatures to achieve a reasonable

asked by Anonymous on October 5, 2010
25. ## Chemistry

catalyst: a substance that changes the speed of a chemical reaction without affecting the yield or undergoing permanent chemical change* As you can see NO (nitrogen monoxide) did not undergo a permanent change.

asked by Lance on August 5, 2005
26. ## Chemistry AP

What are the concentrations of benzoic acid and sodium benzoate in a solution that is buffered with a pH of 4.55 and has a freezing point of -2.0 degrees Celsius? (assume complete dissociation and a density of 1.01g/mL for the solution.)

asked by Cj on February 5, 2014
27. ## Chemistry

I don't understand how to do this problem. You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in the solution, and what are their concentrations? BaCl2 + 2AgNO3 ---> 2AgCl + Ba(NO3)2 Is it trying to trick me with the two sets

asked by Ana on April 29, 2010
28. ## Chemistry 102

Using your average value for Kc (6.92x10^2) and the concentrations provided for the reactants (0.00111mol/L for both), determine the absorbance expected when a 16.00mL of Fe3+ is reacted with 10.00ml of SCN and measured in a 1.00cm cuvette.

asked by Taylor on January 27, 2016
29. ## Chemistry

A buffer solution A. contains approximately equal amounts of a weak acid and its conjugate base. B. increases its properties with an increase in the concentrations of the two buffer components. C. resists changes in pH. D. all of the above I got C is that

asked by Syd on August 14, 2015
30. ## physics

A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone

asked by Derek on September 16, 2008
31. ## math

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

asked by casey on May 5, 2010
32. ## math

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -16t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

asked by casey on May 5, 2010
33. ## physics

A projectile is fired and lands t = 14 s later on the side of a hill, at a location 1400 m away horizontally and 420 m above its starting point. Find the projectile's initial horizontal velocity vx0 and initial vertical velocity vy0. Assume g = 10 m/s2.

asked by Nathaniel on November 3, 2010
34. ## Pre cal

Find the horizontal distance a ball travels after 3 seconds, if the ball is hit with an initial velocity of 90 feet per second at an angle of 60 degrees from an initial height of 5 feet. Round answer to nearest tenth, if necessary. Do not include units.

asked by LeAnn on May 9, 2017
35. ## Algebra

A construction worker drops a hammer from a height of 25 m. How long will it take the hammer to hit the ground? Use the formula h(t)=−4.9t62+vot+ho , where vo is the initial velocity and ho is the initial height. Round to the nearest tenth of a second.

asked by Katiana on December 5, 2017
36. ## 전자재료

Uranium metal can be produced by the reaction of uranium tetrafluoride (UF4) with magnesium (Mg) in a sealed reactor heated to 700oC. The by-product is magnesium fluoride (MgF2). To ensure that all the magnesium is consumed in the reaction, the reactor is

asked by tore on May 9, 2017
37. ## Chem+ASAP+2 fill in the blank questions+ASAP!!!

PLease check this. They are fill in the blank and I just need to know if they are right. Thanks! 9. Compared to a strong acid-strong base titration curve, a weak acid-strong base titration curve has a (higher, lower) __higher___ initial pH value. 10.

asked by David on August 8, 2006
38. ## chemistry

"Ag(s) reacts with none of the 4 (solutions of Ag^+2, Pb^+2, Cu^+2, Zn^+2}. So Ag(s) goes at the bottom of the table for now although there may be some metals below silver when you finish with the entire table. Cu(s) reacts with (Ag^+ solution) so Cu goes

asked by Joseph on April 14, 2008
39. ## Chemistry

Magnesium metal reacts with HCl(aq) according to the equation: Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g) In an experiment to determine the ΔH for this reaction, 0.158 g of Mg metal is combined with an excess of HCl to make 100.0 mL of solution in a coffee

asked by Cali on December 4, 2016
40. ## Organic and Nuclear Chemistry

Regarding nuclear reactions that release a great deal of energy, which statement is true? A. In a fission chain reaction, a uranium nucleus struck by a high-energy neutron emits two neutrons. B. Nuclear fission releases more energy per unit mass than does

asked by Demi on June 25, 2010
41. ## Physics- HELP

How to find average speed with a given initial speed, theta, and delta x? I know average speed= total distance/total time, but I am given an initial speed, an angle and delta x. Mark throws a ball to Daniel with an initial speed of 20 m/s at an angle of 45

asked by Amm on December 1, 2010
42. ## Physics

An object is shot at 20m/s at an angle theta. The object lands 24m away. What is the angle? Can you check if I am doing this right? I had v(initial) = 20 m/s g = 9.8 m/s^2 x = 24m 1st I solved for time: x = v(initial) t x = v(initial) cos(theta) t 24 = 20

asked by Dreskillz89 on September 22, 2009
43. ## Chemistry

In an exothermic reaction, is the heat of the reation less than, greater than, or equal to zero? In an endothermic reaction, is the heat of reaction less than, greater than, or equal to zero?

asked by Steven on October 16, 2012
44. ## chem

What are the equilibrium concentrations of H2SO3, H+, HSO3−, and SO32−in a 0.050 M solution of sulfurous acid H2SO3 at 25 oC? For H2SO3 at 25 oC, Ka1 = 1.5×10−2 and Ka2 = 1.0×10−7

asked by ston on February 25, 2013
45. ## chem

What are the equilibrium concentrations of H2SO3, H+, HSO3−, and SO32−in a 0.050 M solution of sulfurous acid H2SO3 at 25 oC? For H2SO3 at 25 oC, Ka1 = 1.5×10−2 and Ka2 = 1.0×10−7

asked by ston on February 25, 2013
46. ## Chem

Which direction will the following reaction in a 5.0 L flask proceed if Qp = 0.013? 2H2O(g) = 2H2(g) + O2(g) Kp = 1.6 x 10-5 Choose one answer. a. to the right because Q > Kp b. to the left because Q > Kp c. to the right because Q < Kp d. to the left

asked by CC on March 24, 2010
47. ## chemistry

What is the complete ionic equation for the double displacement reaction: CuNO3(aq) + K2S(aq)= what is the chemical name and formula of this chemical reaction? plsss. need help

asked by shay on October 3, 2012
48. ## chemistry

what mass of copper II nitrate would be produced from the complete reaction of 45.6g of copper according to the chemical reaction : Cu + 2 AgNO3 (can't make it a small 3, sorry)----Cu(NO3) + 2 Ag

asked by carla on April 5, 2011
49. ## Chemistry

A reaction has a standard free-energy change of –12.40 kJ mol–1 (–2.964 kcal mol–1). Calculate the equilibrium constant for the reaction at 25 °C.

asked by Anonymous on November 25, 2012
50. ## Chemistry

Calculate the mass of silver metal (Ag) produced from the reaction of 5.58 grams of copper metal (Cu) according to the following reaction: Cu(s) + 2AgNO3(aq) --> Cu(NO3)2(aq) + 2Ag(s)

asked by Carly on February 27, 2011
51. ## chemistry

SO42- + HAsO2+ 2H+H3AsO4 + SO2 1. In the above reaction, the oxidation state of sulfur changes from (Answer) to (Answer) 2. How many electrons are transferred in the reaction?

asked by jenny on March 3, 2014
52. ## Chemistry

Suppose we had mixed 52.37 mL of 1.00 M HI solution with 25.42 mL of 1.00 M KOH solution, and measured a heat of reaction of -1.52 kJ. What is ΔH for this reaction, in kJ? Assume that all solutions have the same density as water (1.00 g/mL).

asked by Will on December 11, 2015
53. ## Chemistry

The reaction X + Y --> Z the reaction rate is for to depend only upon the concentration of X. A plot of 1/X versus time gives a straight line. What is the rate law for this reation?

asked by Lauren on February 25, 2008
54. ## Chemistry

The reaction X + Y --> Z the reaction rate is for to depend only upon the concentration of X. A plot of 1/X versus time gives a straight line. What is the rate law for this reation?

asked by Lauren on February 25, 2008
55. ## chem

When the concentration of I2 is increased to 1.5 M, the ratio of products to reactants is 28. The equilibrium constant for the reaction is 83. In which direction will the reaction shift to regain equilibrium?

asked by tracy on November 19, 2012
56. ## College Chemistry

The maximum amount of product D that can be produced from the following reaction is 55.75 g. 2A + B ¨ 2C + 3D Following an experiment based on this reaction, when the D was isolated, 50.67 g of D were obtained. What is the percent yield for this

asked by Lisa on March 26, 2012
57. ## AP CHEMISTRY!!!!

Carbon monoxide reacts with oxygen to form carbon dioxide by the following reaction: 2 CO(g) + O2(g) → 2 CO2(g) ∆H for this reaction is −566 kJ/mol rxn. What is the ∆H for CO(g)?

asked by Joe King on October 18, 2012
58. ## Chemistry

Suppose 1 gram of Li2CO3 is reacted with in 50.0 mL of 3.00 M HCl. What would be the mass of CO2 liberated in the reaction? After the reaction, how many moles of HCl are left over?

asked by Anonymous on October 7, 2012
59. ## Chemistry

A reaction has a standard free-energy change of –12.40 kJ mol–1 (–2.964 kcal mol–1). Calculate the equilibrium constant for the reaction at 25 °C.

asked by Breauna on September 8, 2014
60. ## chemistry

What mass of copper(II) nitrate would be produced from the complete reaction of 25.1 g of copper, according to the chemical reaction shown below? Cu + 2 AgNO3 ----> Cu(NO3)2 + 2 Ag i got 74.08 is that correct?

asked by vanessa on September 19, 2010
61. ## Chemistry II

A solution contains the following: NH3(aq) + H2O(l) NH4+(aq) + OH-(aq) Adding NH4Cl to this solution shifts the equilibrium of the given reaction to the left. What kind of reaction is this?

asked by Mandy on October 28, 2009
62. ## Chemical kinetics

The energy of activation for a reaction is 100kj/mol.Presence of catalyst lowers the activation by 75%.What will be the effect on rate of reaction at 20°C, other things being the same.

asked by Lalita on August 17, 2017
63. ## chemistry

3PbO2 + 2Cr3++ 2H2O3Pb2+ + 2CrO42-+ 4H+ 1. In the above reaction, the oxidation state of chromium changes from (answer) to (answer). 2. How many electrons are transferred in the reaction?

asked by jenny on March 3, 2014
64. ## Biology

What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

asked by Mengistu on January 13, 2013
65. ## Biology

What will happen to the enzyme activity if both competetive and non-competetive inhibitors appear at the same time together with substrates in a reaction? Which inhibitor will affect the rate of the reaction in more?

asked by Mengistu on January 13, 2013
66. ## science

write an equation relating the concentration of a reactant A at t=0 to that of t=t for a first order reaction. Define all the terms and give their units. Do the same for a second order reaction.

asked by wanex on August 13, 2018
67. ## CHEMISTRY PLEASE!!! ( I NEED HELP ASAP)

Consider the reaction H3PO4 + 3NaOH → Na3PO4 + 3H2O. How much Na3PO4 can be prepared by the reaction of 3.43 g of H3PO4 with an excess of NaOH? For the reaction ?Fe+?H2O → ?Fe3O4 +?H2, what is the maximum amount of Fe3O4(231.533 g/mol) which could be

asked by Farrell on March 12, 2015
68. ## AP Chemistry

For the reaction cyclopropane(g) → propene(g) at 500◦C, a plot of ln[cyclopropane] vs t gives a straight line with a slope of −0.00067 s−1 . What is the order of this reaction and what is the rate constant?

asked by Virginia on December 8, 2016
69. ## Chemistry

A reaction has a standard free-energy change of -11.80 kJ/mol (-2.820 kcal/mol). Calculate the equilibrium constant for the reaction at 25 degrees C. Please help!

asked by Tanisha on November 9, 2011
70. ## chemistry

questions 1)why Benzaldehyde and acetone can't do self condensation in claisen-schmidt reaction condensation? 2)In the second step of same reaction why do we add ethanol to form dibenzalideneacetone ?

asked by Bahia UAEU on September 26, 2017
71. ## chemistry

which of the following is a characteristic of a catalyst? a...can convert an endothermic to an exothermic reaction b...raises the EA c...raises the energy of the reactant(s) d...is recovered unchanged after completion of the reaction

asked by Anonymous on November 30, 2010
72. ## Chemistry

Consider the rxn during the Haber Process: N2 + 3H2 ---> 2NH3 The equilibrium constant is 3.9 x 10^(5) at 300 K and 1.2 x 10^(-1) at 500 K. Find Delta H reaction and Delta S for reaction

asked by Tyler on July 18, 2011
73. ## chemistry

Equilibrium constant K for some reaction at temperature 300K was found to be 100 .Calculate equilibrium for same reaction at 400K if R= 8.23 change in enthalpy is 5000J

asked by shashank on August 18, 2014
74. ## Chemistry

A decomposition reaction has a rate constant of 0.0019 yr -1. ( a) What is the half-life of the reaction? ______ yr (b) How long does it take for [reactant] to reach 12.5% of its original value? ______ yr

asked by Sam on December 2, 2011
75. ## science(chem)

NaClO3 + H2O + HCl=> what form is the Cl in ? I know that a gas is formed but the reaction that I did also had Cl reacting with the reactants so I'm not sure in what form of Cl did my reactant react with the product of the above reaction. Thanks

asked by ~christina~ on April 6, 2008
76. ## science

when a zinc is placed in a copper(ii)nitrate solution,the strip becomes coated with copper.write down the oxidation half reaction for the reaction that takes place.

asked by BONNY on August 25, 2012
77. ## chem

Reaction H2 +I2 yields 2HI All three gases are initially at 0.1atm/ upon reaching equilibrium it is found that H2 pressure droped by 55% what is the equilibrium constant for this reaction.

asked by Anonymous on December 26, 2010
78. ## chemistry 101

given the reaction: 2mg + o2-----> 2mgo . when 4.32g of oxygen react with magnesium 327kj of energy is produced. the heat of reaction for 1 mole of oxygen is???

asked by ABCD on July 9, 2011
79. ## chemistry half reactions

How do i solve this half reaction with Mg(OH)2(s) --> Mg(s)? Complete and balance the displayed half reaction in basic aqueous solution taking into account the electrons. Mg(OH)2(s) → Mg(s)

asked by Confused on November 23, 2010
80. ## Chemistry

For the reaction 2NH3(g) 3H2(g) N2(g) at 472oC equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37x10^_8 M. What is the equilibrium constant for the reverse reaction?

asked by joe on July 16, 2012
81. ## chem--electrochemistry

So in this reaction: Ag(s) + Fe(+3) --> Ag(+) + Fe(+2) we are given 20 grams of Ag(s) to start off with. How do we find how many electrons are transfered in the reaction. And how many grams of Fe(+2) is formed. *for the latter, i think that we can

asked by Rav on March 28, 2010
82. ## Science

A reaction has a standard free-energy change of –11.70 kJ mol–1 (–2.796 kcal mol–1). Calculate the equilibrium constant for the reaction at 25 °C. Im so lost please help

asked by Roberto on March 20, 2017
83. ## Chemistry

the standard free energy change for a chemical reaction is +13.3 kj/ mol. What is the equilibrium constant for the reaction at 125 degree C ? (R= 8.314 j/mol )

asked by nurcan on April 4, 2012
84. ## Chemistry

Write the balanced chemical reaction (showing appropriate symbols and states) for the chemical reaction with enthalpy change equal to ΔHf° [NH3(g)]

asked by Anonymous on March 24, 2017
85. ## chemistry

find mass of magnesium nitride produced in reaction of 5.0of magnesium with 10.0gof nitrogen. the reaction was carried out in a closed container

asked by Allison on March 10, 2015
86. ## Chemistry

2NO(g) + H2(g) --> N2O(g) + H2O(g) + energy. 1. Assume the reaction is reversible and at equilibrium. What shifts in the equilibrium of this reaction are suggested by Le Chateliers Principle?

asked by John on March 26, 2012
87. ## Chemistry!!!

Consider the rxn during the Haber Process: N2 + 3H2 ---> 2NH3 The equilibrium constant is 3.9 x 10^(5) at 300 K and 1.2 x 10^(-1) at 500 K. Find Delta H reaction and Delta S for reaction

asked by John on April 20, 2012
88. ## chemistry

What is the enthalpy for reaction 1 reversed? reaction 1 reversed: 2CO2+3H2O=C2H5OH+3O2 express the answer in kJ/mol

asked by Lilit*** on October 19, 2008
89. ## Chemistry

Consider the generic reaction between reactants A and B: 3A+4B→2C How many moles of B will be in the reaction vessel once the reactants have reacted as much as possible? (Assume 100% actual yield.)

asked by Aria on April 29, 2016
90. ## chemistry

Consider the reaction Select a possible mechanism for the reaction. Step1:Step2:X2Y+Z2→X2YZ2 (slow)X2YZ2→X2YZ+Z (fast)

91. ## chemistry

What mass of copper(II) nitrate would be produced from the complete reaction of 25.1 g of copper, according to the chemical reaction shown below? Cu + 2 AgNO3 ----> Cu(NO3)2 + 2 Ag

asked by sarah on September 15, 2010
92. ## Chemistry

A reaction in which X and Y form products was found to be second order in X and first order in Y. By what factor will the rate of the reaction change if [X] is doubled and [Y] is tripled? a. 10 b. 12 c. 20 d. 2

asked by Student on February 19, 2015
93. ## chemistry

For a particular redox reaction NO is oxidized to NO3^– and Cu^2+ is reduced to Cu. Complete and balance the equation for this reaction in basic solution: NO + Cu^2+ --> NO3^- + Cu^+ help. thanks.

asked by dr. bob rocks on December 4, 2012
94. ## science

AgNO3+NaCL=AgCL+NaNO3 is not a redox reaction but Cu+2AgNO3=2Ag+Cu(NO3)2 is a redox reaction.explain

asked by mohit on June 30, 2016
95. ## Chemistry

During a reaction, you see that the heat (q) given off is 4.6 cal calories. Knowing that you used a mass of 100 g and that the temperature change was 7.85°C, what is the specific heat of this reaction?

asked by Tori on October 10, 2011

From the Standard Potential Table in your general chemistry textbook: Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. 2H+ + 2e–H2 B. Li+ + e–Li C. O2 + 4H+ + 4e–2H2O D. F2 + 2e–2F– E. H2 +

asked by eng on April 29, 2010
97. ## science

For the reaction mc011-1.jpg at 472°C equilibrium is established when [H2] =0.0200M, [N2] = 0.0100M and [NH3] = 5.37 x 10-8M. What is the equilibrium constant for this reaction

asked by mike on November 25, 2013
98. ## Gen Chem

The signs of DG, DH, and DS at 25°C are shown in the table below for three reactions. Reaction DG DH DS I - + + II - - + III - - - Which reaction or reactions should go in the REVERSE direction at high temperature?

asked by Sarah H on March 28, 2008
99. ## Chemistry

During a reaction, you see that the heat (q) given off is 4.6 cal calories. Knowing that you used a mass of 100 g and that the temperature change was 7.85°C, what is the specific heat of this reaction?

asked by Tori on October 10, 2011
100. ## chem

What mass of copper(II) nitrate would be produced from the complete reaction of 25.1 g of copper, according to the chemical reaction shown below? Cu + 2 AgNO3 ----> Cu(NO3)2 + 2 Ag

asked by vanessa on September 15, 2010