# a certain reaction has the following generaln form

27,790 results, page 17
1. ## chemistry

A total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 185g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7C . What is the enthalpy of this reaction? Assume
2. ## Chemistry

A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O3(g)+NO(g) --> O2(g)+NO2(g) The rate law for this reaction is: rate=k[O3][NO] Given that k = 2.87 × 106 M–1·s–1 at a certain temperature,
3. ## Chemistry

A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O3(g)+NO(g) --> O2(g)+NO2(g) The rate law for this reaction is: rate=k[O3][NO] Given that k = 2.87 × 106 M–1·s–1 at a certain temperature,
4. ## chem

How does a gas differ from a liquid with respect to the following property: Ability to mix with other substances of the same phase to form homogeneous mixtures Gases form homogeneous mixtures with each other regardless of the identities or relative
5. ## chemistry

A proposed mechanism for a reaction is: (i) A + B2 AB2 Ea1 = 12 kJ/mol ƒ´H1 = 3 kJ/mol (ii) AB2 + C2 ABC + BC Ea2 = 30 kJ/mol ƒ´H2 = 5.2 kJ/mol (iii) ABC + B2 AB2 + BC Ea3 = 10 kJ/mol ƒ´H3 = -7.8 kJ/mol a) Which is the rate determining step? Explain
6. ## Chemistry

C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond
7. ## Chemistry

C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g) / 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond
8. ## Chemistry

C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g) 200.9 226.7 H2(g) 130.7 0 C2H6(g) - - -84.7 Bond Bond Energy
9. ## Chemistry

C2H2(g) + 2 H2(g)--> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following tables. Substance/ So (J/mol∙K) /∆Hºf (kJ/mol) C2H2(g) / 200.9 / 226.7 H2(g)/ 130.7 / 0 C2H6(g)/ ?? / -84.7 Bond
10. ## Chemistry

How would you exactly start the first problem? My thermodynamic skills is a bit rusty. I am assuming I have to use ΔH°f under the given reaction..? But then..we barely covered ΔG° in class. Am I to use this equation, ΔG° = ΔH° - T ΔS°? Umm..can
11. ## Statistics

12) Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at the Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of 1000 people with known
12. ## Statistics

12) Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at the Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of 1000 people with known
13. ## Chemistry

1.00g of oxygen combine with 0.126 g of hydrogen to form H2O. 1.00 g of nitrogen combie with 0.216 g of hydrogen to form ammonia. Predict the weight of oxygen required to combine with 1.00 g nitrogen to form an oxide.i m a student
14. ## mathematics

the complex numbers 1,-1,iorta root3 form which type of triangle in graphical form
15. ## Math

Convert equation from quadratic form to vertex form, y= a(x-h)^2 +k, by completing the square. y= -.25x^2+5.5x-5.25
16. ## MAATH

Rearrange the terms of the equations fo form Ax + By = C I really get confused about general form, like how do I do it, I don't understand at all. x+3y = -1 2x+4y-12 = 0
17. ## maths/ physics

Determine the two square roots of 3+j4 in both a)Cartesian form b) Polar form Any help with this question would appreciated
18. ## computer

write the following exponent.form.into fractional form: 1) 55.67878E05 2) 67.34567-E04 3) 34.5678E05
19. ## Math

A parabola has intercepts of x = -2, x = 3, and y = -4 how do I write this into these forms: the intercept form (y = a (x – m)(x – n)) and in standard (y = ax2 + bx + c) form
20. ## math

express each of the following expressions in the form nPr or in the form nCr a. 27x26x25x24/4x3x2x1 b. 30x29x28x27x26
21. ## Math

How do you write 2.15 1/2 in expanded form. Our topic is transforming fractions in decimal form... but what is the fraction 1/2 doing there?
22. ## PreCal

express in form a+bi (1+2sqrt3)(2-3sqrt-3) so I came up with 2-3i sqrt3 + 4sqrt3 - 18i Is that solution a+bi form
23. ## Medical Terminology

The combining form chem/o is used to form the word chemotherapy because therapy begins with a ____________?
24. ## MaTH

Rearrange the terms of the equations fo form Ax + By = C I really get confused about general form, like how do I do it, I don't understand at all. x+3y = -1 2x+4y-12 = 0
25. ## Music appreciation

What muscial form preceded the sonata allegro form that was often considered dramatic and rewarding.
26. ## Chemistry

Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A element? S K Rb Fr
27. ## prepositional calculus

Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks
28. ## Math help....

3r=-6cosx I need help converting to rectangular form also:change to polar co-ordinate form 3xy=5
29. ## Spanish but need super help

Explain how to form the usted form of the imperative of the regular ar verb hablar. Pls help
30. ## french

is this right: black in french is 'noir' for masculin form and for feminin form it is 'noires' please correct me
31. ## logic

Convert the following formula to conjunctive normal form (clause form). a) a ≡ (b ≡ c) is the answer (a כ(( b כ c) ^ (c כ b))) ^ ((( b כ c) ^ (c כ b)) כ a) unsure thanks
32. ## 9th grade

two of the forms of a linear equation are standard form and slope-intercept form. explain when each one is more useful
33. ## Chemistry

For the reaction: 2H^+(aq)+Zn(s)----->He2(g)+Zn^2+(aq) a) Write the reduction half-reaction b) Write the oxidation half-reaction c) Identify the oxidizing agent d) Identify the reducing agent
34. ## Chemistry

Volume of reaction flask is 2ml. There are 273 nanomoles of molecular oxygen (O2)/ml of reaction volume at 25*C. What is the amount of atomic oxygen (nanomoles) in the reaction flask?
35. ## Biochemistry

Volume of reaction flask is 2ml. There are 273 nanomoles of molecular oxygen (O2)/ml of reaction volume at 25*C. What is the amount of atomic oxygen (nanomoles) in the reaction flask?
36. ## Chem

COMPOUND 1 CH2 = CH-CH-OH with CH3 under the second CH Plus CH3-CH-CH2-C (double bond O off C and -OH off C) also a CH3 under CH i) complete the equation for this reaction ii) Indentify any new functional groups in the organic product(s)name them iii)State
37. ## medical terminologhy

combining form and suffix to form number 1 abnormal softining of a kidney
38. ## Math

How would you write the following exponential form to logarithmic form: 4^y= (1/64) My answer is: log4(1/64)=y. Am I corret?
39. ## linear algebra

Reduce the quadratic form Q(x)=x^2+y^2+z^2+2xy-4yz+6xz to diagonal form.
40. ## medical information management

you're the chairperson of the form committee. discuss the basic specifications for designing a form
41. ## math

write each decimal in expanded form, in word form and as a fraction. 4.1967
42. ## Math

How to write expression by writing the solution in unit form and in standard form
43. ## math

How do I add whole numbers to fractions. To get the number from an extended form to a standard form?
44. ## math

how many numbers from 1 to 200 have an expanded form that is identical to a standard form? What are they? can you help me understand it?
45. ## Algebra 2 Mannn

9x^2-y^2-72x+8y+119. how do i change this equation from general form to standard form.
46. ## French

Using the imparfait tense, I am trying to form "was born." Would it be "néait" (in the il/elle/on form)? It doesn't look right to me..
47. ## chemistry

4. Phosphorous trichloride, PCl3, reacts with water to form phosphorous acid, H3PO4, and hydrocholoric acid: PCl3+ 3H2O> H3PO3+3HCL a. what is the limiting reactant when 10.0g of PCl3 is mixed with 12.4 g of H2O? b.what mass of HCl is formed? C. how much
48. ## Chem 101

Consider the reaction of 82.0 g of oxygen as follows: 4Fe + 3O2 2Fe2O3 How many moles of oxygen react? How many moles of iron must react? How many moles of product form? What mass of product forms?
49. ## chemistry

Use the reaction below to determine the volume of 0.123 M AgNO3(aq)that is needed to form 0.657 g of Ag2SO4 (s). 2AgNO3(aq) + H2SO4(aq) ¨ Ag2SO4 (s) + 2HNO3(l) 2AgNO3 + H2SO4-----Ag2SO4 + 2HNO3
50. ## Calculus

Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)
51. ## music

The form of the melody called the bar form is represented by A)AAB B)ABB C)ABA D)ABBA
52. ## HCR/220

In your opinion does the HIPPA 837 form have more pertinent information than CMS-1500 form when submiting.
53. ## math

write each decimal in expanded form, in word form and as a fraction. 4.1967 3.504 0.6045
54. ## Calculus

Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)
55. ## Medical Billing and Coding

What form should be attached to a CMS-1500 claim form submitted to a secondary insurance company?
56. ## Calculus

Find a solution to the equation if possible. Give the answer in exact form and in decimal form. 8=4sin(5x)
57. ## Spanish

Explain how to form the usted form of the imperative of the regular -ar verb hablar I know that -ar verbs end in e
58. ## Chem Class

The equilibrium constant for reaction 1 is K.....? how do i figure out problems like this? do i check which ones cancel out? The equilibrium constant for reaction 1 is K. The equilibrium constant for reaction 2 is ___? (1) SO2 (g) + (1/2) O2 (g) (right and
59. ## AP Chemistry

Q - Aluminum metal reacts with zinc(II) ion in an aqueous solution by the following half-cell reactions: Al(s) → Al3+(aq) + 3e− Zn2+(aq) + 2e− → Zn(s) Predict the potential of the cell under standard conditions. Predict whether the reaction will
60. ## Chemistry

The rate constant for the rxn of hydrogen reacting with iodine to form hydrogen iodide is 2.7 X 10^-4 L/mol*s at 600. K and 3.5 X 10^-3 L/mol*s at 650. K. a) determine the activation energy for this reaction. b) determine the rate constant at 700. K
61. ## Physical Science

The physical properties of ice are different from the physical properties of dry ice (frozen carbon dioxide). But the physical properties of gaseous water vapor and the physical properties of gaseous carbon dioxide are the same. Why? A.) The valence
62. ## Organic Chemistry

Hello, I have done an experiment in Organic Chemistry called :SN1 Reaction: Synthesis of t-amyl chloride from t-amyl alcohol, there are some questions that I am unsure about, 1) What are the 2 rules of HCl in this reaction? Can you use NaCl instead of HCl
63. ## chemistry

I have two Questions I need help with. 1. Why do some combinations of ionic compounds form a precipitate while other ionic compounds don't? AND 2. Solutions of lead(II)nitrate and potassium iodide are combined in a test tube and form a yellow precipitate.
64. ## chemistry

In a reaction involving the bromination of acetone, the following initial concentraions were present in the reaction mixture. acetone (0.8mol/L), H+ (0.2 mol/L), Br2 (0.004 mol/L) At 25 degrees C, it took 240s before the colour of Br2 disappeared. If the
65. ## Chemistry

1.00g of oxygen combine with 0.126 g of hydrogen to form H2O. 1.00 g of nitrogen combie with 0.216 g of hydrogen to form ammonia. Predict the weight of oxygen required to combine with 1.00 g nitrogen to form an oxide.
66. ## Math

An observational study is described. Determine the nature and scope of the conclusion the study can reach. In a group of 500 women, those who smoked moderately did worse on tests of reaction time than those who did not smoke. A) Smoking moderately causes
67. ## chem

Is ammonium hydroxide a strong or weak base and how do you know that? Technically there is no such thing as ammonium hydroxide. NH3 gas (ammonia gas) dissolves easily in water and produces the NH4^+ and the OH^- from the reaction with water. It is a weak
68. ## Chemistry

For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 bar for all species. For the reaction C2H6(g)+H2(g)---->2CH4 the standard change in Gibbs free energy is ΔG° = -32.8 kJ/mol. What is ΔG for this reaction at 298 K when the
69. ## Chemistry

Based on the following chemical equation answer the question below show all your calculation The balanced chemical reaction of iodine with hydrogen sulfide h2s(g)+i2(s)-----2HI(g) + S(s) (a) Based on the above chemically balanced equation, how many grams
70. ## chem

a.) At equilibrium, the molar concentrations for reactants and products are found to be [I2] = 0.50 M,[Cl2] = 0.60 M, and [ICl] = 5.0 M. What is the equilibrium constant (Kc) for this reaction? b.) The concentration of I2 is increased to 1.5 M, disrupting
71. ## chemistry

Based on the following chemical equation, answer the questions below. Show all your calculation The balanced chemical reaction of iodine with hydrogen sulfide is as follows: H2S(g)+I2(s)-----2HI(g) + S(s) (a) Based on the above chemically balanced
72. ## chemistry

enthalpy change^H is +23kJ mol-1 of phosphine (PH3) for the reaction 2P(s)red+3H2(g)---->2PH3(g) a) Calc. entropy change for this reaction. Explain how this information allows you to determine the spontaneity or non-spontaneity of this reaction at any temp
73. ## chemistry

For the reaction shown below complete the following calculations. H2(g) + C2H4(g) --> C2H6(g) (a) Estimate the enthalpy of reaction using the bond energy values in Table 9.4. (b) Calculate the enthalpy of reaction, using standard enthalpies of formation.
74. ## chem

At a certain temperature, a 19.0-L contains holds four gases in equilibrium. Their masses are: 3.5 g SO3, 4.6 g SO2, 14.0 g N2, and 0.98 g N2O. What is the value of the equilibrium constant at this temperature for the reaction of SO2 with N2O to form SO3
75. ## chemistry

What is the coefficient of oxygen in the following equation for the reaction of potassium (K) with oxygen (O2) to form potassium oxide (K2O? __ K + ___ O2 -> ___ K2O is it 4, 3, 2, or 1?
76. ## AP Chemistry

This is the question I am having trouble with: A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode is immersed in a NaCl solution, with Cl2 gas bubbled around the electrode.
77. ## CHEMISTRY HELP ASAP PLEASE!!!!!!!!!!!!!!!

In the commercial production of the element arsenic, arsenic (II) oxide is heated with carbon which reduces the oxide to the metal according to the following equation: 2As2O3 + 3C ----„³ 3CO2 +4As A>if 8.87 g of As2O3 is used in the reaction and 5.33 g
78. ## chemistry

In the commercial production of the element arsenic, arsenic (II) oxide is heated with carbon which reduces the oxide to the metal according to the following equation: 2As2O3 + 3C ----„³ 3CO2 +4As A>if 8.87 g of As2O3 is used in the reaction and 5.33 g
79. ## chemistry

aspirin is synthesized through the following reaction C7H603+C4H6O3=C9H8O4=HC2H3O2 a)Assuming the maximum yield that could be obtained is 76.8% what mass of Aspirin C9H8O4 could be obtained from this reaction when 2.00 * 10^2 grams of C7H6O3 reacts with
80. ## chemistry-balanced redox equations

Use the following steps to balance the redox reaction below: Mg + Au+ Mg2+ + Au a. Write the oxidation and reduction half-reactions. Make sure each half-reaction is balanced for number of atoms and charge b. Multiply each half-reaction by the correct
81. ## chemistry

Use the following steps to balance the redox reaction below: Mg + Au+ Mg2+ + Au -Write the oxidation and reduction half-reactions. Make sure each half-reaction is balanced for number of atoms and charge. -Multiply each half-reaction by the correct number,
82. ## Chem

Could someone explain to me how to prepare (a) zinc chloride by an acid-base reaction and (b) by a gas formation reaction. If the starting materials available are ZnCO3, HCL, CL2, HNO3, NaCL, Zn(NO3)2, and Zn. Thanks so much for any info.
83. ## chemistry

For the reaction below,when the reaction when 0.5000g of X13 reacts completely, 0.2360g of XC13 is obtained. Calculate the atomic weight of element Xmas and identify it 2X13 + 3C12--->2C13+312
84. ## chemistry

Sulfuric acid is dripped onto samples of three metals: silver, =zinc, and aluminium a) Use the activity series to determine whether a reaction will occur with each metal b) Write a chemical equation for each reaction that occurs
85. ## Chemistry

Please help me set up these problems. I have been staring at them for hours and I can't tell where I went wrong. Question: Consider the following reaction: CaCO3(s)→CaO(s)+CO2(g). Estimate ΔG∘ for this reaction at each of the following temperatures.
86. ## chem

Calculate the number of liters of hydrogen, measured at STP, that can be produced from the reaction of 0.155 mol of aluminum according to the following unbalanced chemical reaction equation. i got .193 L of H2 but it was wrong. i only have one submition
87. ## Alg.1 standard form

write an equation in standard form of the line containing (-1,1) and (6,-1) (-1,1) (6, -1) --------- (7,-2) -----> m= -2/7 and then u plug it in the point slope form? somehow i feel im doing something wrong...
88. ## Trigonometry

rectangular form to polar form xy=12 rsinÆŸ rcosÆŸ=12 would the answer be: r^2=12/cosÆŸ sinÆŸ please show steps, Thanks
89. ## algebra

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you
90. ## Algebra

Hi, I'm trying to learn logarithmic form and I'm kinda of stuck Write in exponential form: 1.log(3)6561=x 2.x^4 = 625 Thank you
91. ## Biochm

The deprotonated form of the R group of cysteine. The ratio of protonated to deprotonated form depends on the pKa of the R group and the pH of the solution. => Select all the pH values at which the protonated form of the R group would predominate. 9.0 8.3
92. ## biology Help

The fertilized egg undergoes cell divisions that form a ball of cells during (A)__________. During (B)__________, the endoderm, ectoderm, and mesoderm form. All the tissues of the adult body will come from these three germ layers. Differentiation is the
93. ## biology help

The fertilized egg undergoes cell divisions that form a ball of cells during (A)__________. During (B)__________, the endoderm, ectoderm, and mesoderm form. All the tissues of the adult body will come from these three germ layers. Differentiation is the
94. ## Math

You are given equations in Standard Form. Rewrite them in Slope-intercept form. -6x + 4y = 24 is y= 6/4x + 6 or y = 2/3x + 4?
95. ## algebra

is 2x=7 a. Standard Form b. Slope Intercept form c.not a linear equation
96. ## algebra

How do you chance an equation from standard form to slope-intercept form?
97. ## Pre-Calculus

Have I converted correctly from standard form to vertex form? y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks
98. ## biology

During mitosis, when does cleavage form? Does it form near the end of telophase or near the beginning?
99. ## mathematics

How do we convert number scales from their fraction form to ratio form
100. ## Calculus

F(x) = 1-x and g(x) = 1/x Write in the form (ax + b)/(cx + d) a.What are all the possible values of a, b, c, and d? b.Find all the functions fo the form f (x) = (ax + b)/(cx + d) with the property that f o f^-1 = x