# a certain reaction has the following generaln form

74,738 results, page 26

1. ### chemistry

Given the following thermochemical data: 1) H2(g) + 1/2 O2(g) -> H2O(g) ∆H = -241kJ 2) C6H10(g) + 17/2 O2(g) -> 6CO2(g) + 5H2O(g) ∆H = -3800kJ 3)C6H12(g) + 9O2(g) -> 6CO2(g) + 6H2O(g) ∆H = -3920 kJ What is ∆H for the following reaction? C6H10(g...
2. ### chemistry

What is the equilibrium constant "Kp" at 200 C for the reaction below: P4(s) + 6 Cl2(g) --><-- 4 PCL3(l) Given the following at 200 C P4(s)+ 10 Cl2(g) --><-- 4 PCl5(s) Kc=8.12 PCl3(l)+ Cl2(g) --><-- PCl5(s) Kc=0.771 Answer: 6.7*[10^(-9)] not sure what to do. ...

What is Gibbs free energy? A. The energy lost as heat to the surrounding molecules B. The usable energy released or absorbed by a reaction C. The energy in the form of kinetic energy in a system D. The energy contained within the bonds of molecules
4. ### College Chemistry 2 - Equilibrium Constants/Conc.

The equilibrium constant for the reaction is 37 at a certain temperature. 2H2(g) + CO(g)<==> CH3OH(g) If there are .0293 moles of H2 and .00353 moles of CH3OH at equilibrium in a 4.53-L flask, what is the concentration of CO? .....So far I have found: H2= .0293/4.53= ....
5. ### chem

1) If more reactant is added to a gaseous reaction at equilibrium, what will happen to the value of the equilibrium constant? a. it will increase b. it will decrease c. it will remain the same d. it can either increase or decrease 2) Which of the following describes a property...
6. ### Minoxidil

So, I'm doing a research project for my chemistry class, and one of the parts that I have to answer is the chemical reaction of the substance that I'm researching. But there's a problem. I've searched every single website regarding minoxidil, but I cannot find a chemical ...
7. ### chemistry

what is the oxidation half reaction, reduction half reaction, and the complete balanced reaction of the following? (a) Al(s) + MnO4‾(aq) → MnO2(s) + Al(OH)4‾(aq) (b) Cl2(g) → Cl ‾(aq) + ClO ‾(aq) (c) NO2‾(aq) + Al(s) → NH3(g) + ...
8. ### pre-calculus

The following rational function describes concentration in blood of a certain medicine taken once depending on time, find: A. the horizontal asymptote B. the vertical asymptote C. describe their possible meaning ( I only need help with C
9. ### Chemistry

Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) for 310K,1070,1470 this is...
10. ### maths

NOTE: before you answer this question, please be aware that there aren't meant to be any full stops after the '2' or the 'i=0'. Also the underscores '-' represent how the following number is meant to be a lower case number. The ^ represents root numbers. PLEASE HELP ME Expand ...
11. ### Chemistry

Consider the following hypothetical aqueous reaction: A (aq)-->B(aq)}. A flask is charged with 0.065 (mole) of A in a total volume of 100.0 (mL}. The following data are collected: Time (min) 0 10 20 30 40 Moles of A .065 .051 .042 .035 .031 Calculate the average rate of ...
12. ### chemistry

For a certain reaction at constant pressure, ∆H = -15kJ, and 22 kJ of expansion work is done on the system. What is ∆U for this process? So I know ∆= ∆U + Work flow If work is being done on the system, shouldn't work flow be positive? So I assumed it ...
13. ### chemistry

2nd revision to the question, it is 7.62atm not 7.2atm, its now all correct on the question. sorry again Fluorine and krypton react to form binary compounds when a mixture of the two gases is heated to 500C in a nickel reaction vessel. A 100mL nickel container is filled with ...
14. ### Chemistry (Check)

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
15. ### Chemistry (Check)

Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many grams of magnesium ...
16. ### Physics

If a supersaturated sugar solution is allowed to evaporate slowly, sugar crystals form in the container. Hence, sugar molecules go from a disordered form (in solution) to a highly ordered, crystalline form. Does this process violate the second law of thermodynamics? Explain.
17. ### Help please I am lost, algebra

I have notes on this from online but they are different from this problem and I don't know how to solve it. Find the equation of a line with the given information: slope -5/4 and g(14)=-6 It is asking for, point slope form, slope intercept form, Function form, if vertical ...
18. ### English

Which of the following is not true? A. Alvarez's imagery allows the reader to see and hear her speaker's neighborhood. B. Alvarez's tone is measured and wry. C. Alvarez's speaker wishes to take the reader into her confidence. D. Alvarez's diction, or word choice, indirectly ...
19. ### Chemistry

According to the following reaction, how many grams of tetraphosphorus decaoxide are required for the complete reaction of 26.5 grams of perchloric acid (HClO4)? perchloric acid (HClO4) (aq) + tetraphosphorus decaoxide (s) ---> phosphoric acid (aq) + dichlorine heptaoxide (...
20. ### Chemistry

Given the following reaction: 3 H2(g) + N2(g) <- -> 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure Adding heat ...
21. ### Chemistry

Given the following reaction: 3 H2(g) + N2(g) <- -> 2NH3(g) + heat If the following changes were to occur what direction shift will it have (left or right) And what will be the reason of the shift Changes/Stress on system: Adding NH3 Decreasing the pressure Adding heat ...
22. ### maths

In the sequence: x+4y ; 2y+2 ;x ;y-1, (consisting of 4 terms) the first three terms form an arithmetric progression, while the last three tern form a geometric sequence. Calculate the values of x and y. Answer(s) can be left in surd form.
23. ### Science

The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g) + O2 (g) ↔ 2NO2 (g) What is the value of Keq at this temperature for the following reaction? NO2 (g) ↔ NO (g) + 1/2 O2 (g) The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g...
24. ### Chemistry

The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g) + O2 (g) ↔ 2NO2 (g) What is the value of Keq at this temperature for the following reaction? NO2 (g) ↔ NO (g) + 1/2 O2 (g) The Keq for the equilibrium below is 5.4 × 1013 at 480.0 °C. 2NO (g...
25. ### physics

Draw energy graph of the reaction where energy reaction is 1kg mol-1 the energy of the product is 50kg mol-1 and the activation is 50kg mol-1.state whether reaction is exothermic o endothermic
26. ### personal finance

Which of the following statements is correct? a)Stock is a form of debt capital b)Stock must be repaid at maturity c)Bonds are a form of debt capital d)Bonds do not have to be repaid at maturity IS C CORRECT ANSWER?THANK YOU:))))
27. ### Chemistry

Which reaction has been chosen as the 'standard' against which every other reaction is measured? A. F2 + 2e ---> 2F– B. O2 + 4H+ + 4e ---->2H2O C. 2H+ + 2e---> H2 D. Li+ + e ---> Li E. H2 + 2e --->2H i got C is that right?
28. ### 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?
29. ### chemistry

True or False? An equilibrium constant K_c=1x10^7 for a reaction indicates that the reaction favors product formation.
30. ### 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!
31. ### physical science

the influence of the magnitude of the surface area on the rate of reaction of a specific reaction using rennies tables
32. ### gr10 science

The products of the reaction are iron (III) hydroxide and sodium chloride. How could I write a word equation for this reaction?
33. ### Chemistry

For the balanced redox reaction 2 Al(s) + 3 Br2(g) → Al2Br6(s), determine the number of electrons transferred in the overall reaction.
34. ### Chemistry

Write the reduction half reaction for the redox reaction below. ClO-(aq) + I-(aq) => Cl-(aq) + I2(s) Is I- being reduced since Cl is losing an O?
35. ### chem

The value for ΔH° for the reaction below is -72 kJ. How many kJ of heat are released when 1.0 mol of HBr is formed in this reaction? H2(g) + Br2(l) = 2HBr(g)
36. ### Chemistry

If the reaction 2NO + 2H2 --> N2 + 2H2O occurred in just a single step, the overall order of the reaction would be A) 1 B) 2 C) 3 D) 4 E) 5
37. ### sofunda

science chemistry..investigate the reaction of a number of elements and compound with water and classify the reaction as exothermic or endothermic.
38. ### Chemistry

in a particular redox reaction, Cr is oxidized to CrO42- and Ag+ is reduced to Ag. Complete and balance the equation for this reaction in acidic solution.

If it takes 30 seconds for a reactant concentration to decrease from 1.0 M to 0.5 M in a first-order chemical reaction, then what is the rate constant for the reaction?
40. ### Chemistry - Rates

For a particular reaction, the rate constant is 2.32 ✕ 10−3 M/s at 185°C and 3.70 ✕ 10−3 M/s at 235°C. What is the activation energy for this reaction? _______ kJ/mol
41. ### MATH Dx

17/51 simplest form 19/38 simplest form 10/32 simplest form show work pweeeese T3T
42. ### Chemistry

Use the Bronsted-Lowry definitions to identify the two conjugate acid-base pairs in the following acid-base reaction: H20 + H20 <-> H30^+ + OH^- Let's see what you think on this after the previous post. Just remember, the acid is the one that HAS the H and the base is ...
43. ### chemistry

Why are half-reactions used in redox reactions? A. They make it easier to keep track of spectator ions in the reaction. B. They make it easier to see the oxidation and reduction parts of the reaction separately. C. They make it possible to neglect the electrons that are being ...
44. ### s

what is not a synthesis reaction 2H20 --2h2 +02 is this not a syn reaction
45. ### Chemistry

Complete and balance this decomposition reaction HI ==> is this reaction HI ==> H + I ? or... HI ==> H2 + I2 ? why?
46. ### chemistry

reaction of benzoic acid with propylamine. if there no reaction why
47. ### chemistry

HF reaction with MnO2 Explain why it is a redox reaction?
48. ### Chem

Reaction 1 ............................O ...........................// CH2=CH-CH-OH + CH3-CH-CH2-C ........|...........|......\ .......CH3.........CH3......OH Left of the "+" is COMPOUND 1 and the right is COMPOUND 2. a) Identify the Functional groups in compounds 1 and 2 b) ...
49. ### Sceinece/Chem

What is the coefficient for H2O when the following equation is balanced: Mg3N2 + H2O → Mg(OH)2 + NH3? When the following reaction is balanced, what is the coefficient for O2? H2 + O2 → H2O Would the answer be 2?
50. ### Chemistry

Can you have one half-reaction take place, without the other half-reaction taking place immediately? The other half-reaction takes place when the cell potential is raised. I half witness this in some electrochemical cells. Sincere Thanks.
51. ### 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 of mass 280.7 g was collected from the reaction of 70.86 g of P4 with excess chlorine. What is the percentage yield of the ...
52. ### Chemistry 2

An industrial chemical reaction has a rate law: rate = k [C]. The activation energy for the reaction is 3.0000 x 10^4 J/mol and A = 2.000 x 10^-3. What must be the reaction temperature if a rate of 1.000 x 10^-9 M/s is required and [C] must be kept at 0.03000M. Hint: What must...
53. ### Chemistry

with a platinum catalyst, ammonia will burn in oxygen to gove nitric oxide NO. What is the enthalpy change for the following reaction? NO + 3/2 H2O -----> NH3 + 5/4 O2
54. ### English

Which one of the following is a correct example of the singular possessive case? 1) women's club 2) audiences' reaction 3) who's job 4) king's rights
55. ### Chem

Calculate the Go for the oxidation of 5 moles of tin in the following balanced reaction. 16HCl + 2KMnO4 + 5Sn ---> 5SnCl2 + 2MnCl2 + 2KCl + 8H2O
56. ### Chemistry

A student observed the following reaction: AlCl3(aq)+3NaOH(aq) -> Al(OH)3(s)+3NaCl(aq) After the products were filtered, which substances remained on the filter paper and why?
57. ### Chemistry

For the reaction shown, compute the theoretical yield of the product in grams for each of the following initial amounts of reactancts 2Al(s) + 3Cl2(g) = 2AlCl3(s)
58. ### gen chem

what would Qc be if the pressure of the container decreased by a factor of 2.417 for the following reaction? 4Hcl(g)+O2(g)<-->2Cl2(g)+2H2O(g) Kc=13.298 @ 753K

The following reaction occurs in an aqueous acid solution: no3- + I- -> IO3- + NO2 In the balanced equation, the coefficient of water is A. 4 B. 3 C. 1 D. 5 E. 2
60. ### Chemistry

What is the minimum amount of 5.0M H2So4 necessary to produce 24.1g of H2(g) according to the following reaction? 2Al(s) +3H2So4(aq) produces Al2(So4)3(aq) + 3H2(g)
61. ### chem

whats the net ionic equation for the following reaction AgNo3(aq)+Na2SO4(aq) answer 2Ag+(aq)+SO42- (aq)___> Ag2So4(s) correct?
62. ### chemistry

consider the following reaction: 2C2H6(g)+7O2 (g)-->4CO2(g)+6H2O (g) delta H = -3120kJ If 3.00g of ethane are burned, how many kJ of heat are produced?
63. ### chemistry

Calculate the E° for each of the following reaction. Decide whether each is product-favored in the direction written 2 Cl-(aq) + Cu2+(aq) --> Cu(s) + Cl2(g) i got -1.020 but its wrong and i do not know why.
64. ### Chemistry

Give the following reaction,find the mass of oxygen required to produce 13grams of CO2; C3H8+5O2--->3CO2 + 4H2O
65. ### Chemistry

Write a balanced net ionic equation (include physical states) for the following reaction: Fe(NO3)3(aq) + LiOH(aq) → LiNO3(aq) + Fe(OH)3(s)
66. ### chemistry

Determine the actual values for the standard change in entropy for the following reaction. NH3(g) + HCl(g) NH4Cl(s) do I use the delta G equation?
67. ### chemistry

Choose the term that best describes the following chemical reaction: C10H8 + 12 O2 10 CO2 + 4 H2O A. synthesis B. combustion C. electrolytic D. decomposition
68. ### chemistry

Please help again. How many grams of lithium are required to completely react with 70.7 mL of N2 gas at STP when given the following reaction: 6Li + N2 = 2Li3N
69. ### chemistry

what mass of oxygen would be required to completely burn 6.75 g of propane in the following reaction? C3H8+5O2 => 3CO2+4H2O * please help
70. ### chemistry

What is the molarity of ZnCl2 that forms when 19.0 g of zinc completely reacts with CuCl2 according to the following reaction? (Assume a final volume of 195 .)
71. ### Chemistry

how do I balance the following skeleton redox equation for a reaction occurring in acidic solution. HNO2 + MnO4- yield to Mn2+ + NO3-
72. ### Chemistry

Consider the following equilibrium at 395K: NH4HS(s) <--> NH3(g) + H2S(g) The partial pressure of each gas is 0.265 atm. Calculate Kc for the reaction
73. ### Chemistry

Consider the following equilibrium at 395K: NH4HS(s)<-> NH3(g) + H2S(g) The partial pressure of each gas is 0.265 atm. Calculate Kc for the reaction.
74. ### chemistry

Based on the following reaction 2A + 3B --> A2B3, if 1 mole of A is reacted with 2 moles of B, explain how you would determine which of the two substances is the limiting reactant.
75. ### chemistry

How many grams of Mg(OH)2 are needed to neutralize 55 ml of 0.25 M HCl . according to the following reaction. (show all calculations for credit) Mg(OH)2 (aq) + 2HCl(aq) --- MgCl2 (aq) + 2H2O(l)
76. ### Chemistry

Write a balanced net ionic equation (include physical states) for the following reaction: HClO2(aq)+NaOH(aq)=H2O(l)+NaClO2(aq)
77. ### chem

What volume of benzene (C6H6,d=0.88g/ml,molar mass=78.11g/mol) is required to produce 1.5 x 10^3 kJ of heat according to the following reaction?
78. ### Chemistry

What is the minimum amount of 5.9M H2SO4 necessary to produce 27.7g of H2 (g) according to the following reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)
79. ### chemistry

Complete and balance the following reactions, where applicable. If no reaction occurs, write N.R. Li + H2O ----> KCI + F2 ---> Au + HNO3 ---> CI2 + NaF ----> Li + Fe(NO3)3 --->
80. ### chemistry

Complete and balance the following reactions, where applicable. If no reaction occurs, write N.R. Li + H2O ---> KCI + F2 ---> Au + HNO3 ----> CI2 + NaF ---> Li + Fe(NO3)3 --->
81. ### chemistry

methane(g) +water= carbon monoxide(g)+Hydrogen (g) use the bond energies in the following table to predict the delta H foe the reaction
82. ### chemistry

Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2
83. ### Chemistry

Need help with my last question! Given the following reaction: 2NH3 (g) + 5F2 (g) ---> N2F4 (g) + 6HF (g) If 4.00 g of NH3 and 14.0 g of F2 are allowed to react, how many grams of HF can be produced?
84. ### chemistry

Consider the following equation: CO + 2 H2 → CH3OH △H rxn = -128 kJ Calculate the amount of heat (in kJ) associated with complete reaction of 8.08 g H2. how would i set this up?

simplify the following fractions by rewriting them in factored form and finding all the "ones" you can....plis help.. 42/60, 16/80, 51/17, 7/33...
86. ### english

which of the following genres is defined by form rather than theme: tragedy, sonnet, comedy, satire, or drama.
87. ### PreCalc

Find the standard form of the equation of the ellipse with the following characteristics. foci: (+/-5, 0) major axis of length: 22
88. ### english

which form of verb tense is the underlined phrase in the following sentence? You should have invited them to the party.
89. ### intermediate algebra

short answer.Simplify the following expression,and rewrite it in an equivalent form with positive exponents. (-2x^-2)^-4
90. ### math

12xp7 ______ 36 xyp7 Simplify the following expression, and rewrite it in an equivalent form with positive exponents.
91. ### healthcare

Can you give me a descrption for the use of the following of communication progress notes care plan: Assessment form:
92. ### math

put each of the following in standard form. Also note and the leading coefficient 6x2 - 7x5 +2x 4x + x2 +1 3 + 16 +7x3 - 2x
93. ### algebra 2

Write an equation in slope-intercept form for the line that satisfies the following condition. passes through (11, –15) and (16, 5)
94. ### biology

Which of the following amino acids has a side chain that carries a negative charge in its conjugate base form? A. H B. W C. C D. K E. N
95. ### Civics

which of the following is not an authoritarian form of government? A. Totalitarianism B. Absolute monarchy C. Dictatorship D. Direct democracy Answer is "C"
96. ### Organic Chemistry

Which of the following substances can exist in an optically active form a) 1,3 dibromopropane b) ethyl cyclohexane c) 3 ethylpentane
97. ### Expressions help

I have no idea on how to do this equation please help me. What is the simplified form of the following expression 2x^2y+3x^2+4y+3x^2y+2y possible answers 1.)5x^4y^2+3x^2 2.)8x^2y+6y^2 3.)5x^2y+3x^2+6y 4.)14x^2y Is it 3?
98. ### Algebra

Find the complex zeros of the following polynomial function. Write f in the factored form. F(x)=2x^4-5x^3-20x^2+115x-52
99. ### Algebra

Find the complex zeros of the following polynomial function. Write f in the factored form. F(x)=2x^4-5x^3-20x^2+115x-52
100. ### Science - MIT

Which of the following is a possible set of n, l, mi, and ms quantum numbers for the last electron added to form a gallium atom (Z=31)? 4,1,1,1/2