# a certain reaction has the following generaln form

28,046 results, page 56
1. ## algebra

------Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that

asked by Olive on October 6, 2013
2. ## Chemistry

42. Tell the function of the moderator and control rods in a nuclear reactor. I found this answer on google..is it correct? The function of the moderator is to slow down the neutrons produced by fission to greatly increase the probably that they will go on

asked by mysterychicken on October 30, 2010
3. ## Chemistry

Which of the following reactions is exothermic? 1. Na(s) --> Na(g) 2. Na(g) --> Na+ + e- 3. Cl2(g) --> 2Cl(g) 4. Cl(g) + e- --> Cl-1 My guess is 4, but I'm not sure Here is what you do. For 1, do we think it will take energy to change Na as a solid to Na

asked by Fiona on April 30, 2007
4. ## Algebra

Need help with two questions. I've been stuck on them for a while now. 1) Find a general form of an equation of the line through the point A that satisfies the given condition. A(−2, 5) slope 3/4 2)Find a general form of an equation of the line through

asked by Jim on February 25, 2013
5. ## chemistry

Hydrogen gas can produced by the reaction between metallic aluminum and aqueous hydrochloric acid 2Al+6HCl----2AlCl3+3H2 Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes

6. ## Chemistry

A 100 L reaction container is charged with 0.724 mol of NOBr, which decomposes at a certain temperature** (say between 100 and 150 oC) according to the following reaction: NOBr(g) ↔ NO(g) + 0.5Br2(g) At equilibrium the bromine concentration is 1.82x10-3

asked by Anonymous on February 20, 2013

Hi Everyone, Anyone want to try giving these a shot? The right electrode in a cell is a piece of copper immersed in a 1.00 L solution of 0.0701 F copper sulfate. The left electrode is a galvanized nail (i.e., an iron nail that is completely coated with a

asked by ajones51 on November 7, 2006
8. ## Physics

Physics question on identify the reaction? I am having trouble with the question a, b, and c in this physics problem: One or more external forces are exerted on each object enclosed in a dashed box shown in the figure below. Identify the reaction to each

asked by Lin on February 27, 2011
9. ## Chemistry

1. Which of the following is one way to prevent the corrosion of iron? A. Paint exposed iron parts with protective paint. B. Protect the iron from polluted air. C. Add carbon to the iron. D. Let the iron develop a natural coat of carbonate. 2. The source

asked by StarBuddy on October 3, 2013
10. ## Algebra 1

1) Find the possible values of a, if the distance between the points is 5, and the coordinates are (1, 1) and (4, a). I don't know how to solve this one. 2) in a right triangle the length of the hypotenuse is 14 and the length b of one of the legs is 8.

asked by Eri on May 31, 2013
11. ## chemistry

Hey...how r u guys..thanks for helping me on my previous questions...can u help me solve two questions and check one? Thanks, all the questions are related to the info given: In some industrial processes, sodium chromate is added to water coolants. When

asked by David on June 18, 2006
12. ## Chemstry

I just copied this because i have a couple more questions on this part.... Sulfuric acid/ Lead Battery: -the electrodes for the battery are composed of Pb(s), PbO2, and/or PbSO4. What are the half reaction occuring at each electrode? include electrolysis

asked by Sara on April 28, 2008
13. ## ChemistryDrBob222

Arrows disappeared from below added them back to the equations. The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in

asked by David on January 26, 2011
14. ## Math

Find the product 8 1/3 x 3/5 in simplest form Find the product 5 1/2 x 3 1/3 in simplest form Use distributive property to find the product 4 2/5 x 10

asked by Heather on January 28, 2015
15. ## English

1. My hobby is internet games and paper folding. 2. My hobbies are internet games and paper folding. ----------- Which one is grammatical? 3. My hobby is exchanging text messages on Kakao Talk on my smart phone. 4. My hobby is talking with my friends on

asked by rfvv on March 23, 2016
16. ## Spanish

This is my assignment: Imagine you are babysitting your little brother. Write a total of 5 Spanish sentences using tú commands telling your little brother what to do. Write 3 sentences using regular verbs. Write 2 sentences using irregular verbs. You can

asked by Jessie on May 16, 2014
17. ## Chemistry

When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. If 22.9 grams of magnesium nitride are added to 31.0 grams of water, how many liters of ammonia should be produced (assuming standard

asked by Jay on September 14, 2017
18. ## Chemistry

Hi I hope you can understand this...the Na ion is attached to the oxygen using ionic bonding. The \/ are meant to symbolize the hydrocarbon chain. The || is a double bond that bonds oxgen to carbon. O || Na O/\/\/\/\/\/ + CaCl2 -> ? + NaCl To give you some

asked by Me on January 20, 2011
19. ## English

1. We decided to go abroad. 2. We made up our mind to go abroad. 3. We made a decision to go abroad. 4. We made up our minds to go abroad. (Are they all interchangable? Do we have to use the plural form 'minds' or the singular form 'mind'?) 5. We

asked by rfvv on May 2, 2010
20. ## Chemistry

Thanks for the help earlier My question Silicon tetrachloride (SiCl4) can be prepared by heating Si in chlorine gas: Si + 2Cl2 yields SiCl4 In one reaction 0.507 mole of SiCl4 is produced. How many moles of molecular chlorine were used in the reaction? Ok

asked by Kate on July 3, 2010
21. ## Algebra 2/Statistics

From a squad of 12 cheerleaders, 10 will assemble themselves into a 4-level pyramid at the Homecoming rally. 1.) How many different combinations of cheerleaders can be used to build the pyramid? For this I got 12C10=66......Right or Wrong? 2.) The coach

asked by Jordan on April 30, 2015
22. ## Math

In an isosceles triangle, the perimeter is 8 more than 2 times on of the legs. If the perimeter is 28 in, find the length of the base. A. 16 in B. 18 in C. 10 in D. 8 in Given triangle ABC with A(-3, 2), B(-1, -4), and C(4, 1), write the equation for the

asked by SkatingDJ on January 14, 2016
23. ## calculus totally confused

find a first degree polynomial function p(1) whose value and slope agree with the value and slope of f at x=c. i think you use taylor series for this f(x)=4/sqrt(x), c=1 i'm totally confused on how to do it. i know you find the derivative but how do i get

asked by david on March 13, 2007
24. ## Art

I am suppose to look at the sculpture Madonna and Child within an Arch by Donatello. I am suppose to say what elements of art are used in this sculpture. The elements of art in case you don't know are form texture color shape line and value. I said this

asked by Bella on May 16, 2012

Draw Bohr diagrams of a magnesium atom bonding with fluorine atoms. Draw atoms then electron transfer and finally the ions that form. What type of bonding occurs? Draw Bohr diagrams of 2 hyrdogen atoms bonding with an oxygen atom by sharing electrons to

asked by Anonymous on March 3, 2014
26. ## Urgent Spanish Check

A) Read the following sentence and choose which word is not correct in the context of the sentence. 1) La examen es difícil. La? 2) El árbol es verdes. el? B) The following sentence is written in singular form. Read the sentence, then choose the correct

asked by Katt on September 17, 2014
27. ## Math

A piece of wire is bent to form a square of area 121cm. Calculate: a)the length of each side of the square. b)the perimeter of the square. The piece of wire is now bent to form a circle using π=3.14 Calculate: a)the radius of the circle b)the area of the

asked by Baller T on September 24, 2015
28. ## Chemistry

A student conducts an experiment to determine the enthalpy of neutralization for phosphoric acid reacting with sodium hydroxide. The student combines 25.0 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 °C, in an

asked by Chen on November 6, 2011
29. ## Chemistry

A student conducts an experiment to determine the enthalpy of neutralization for phosphoric acid reacting with sodium hydroxide. The student combines 25.0 mL of equimolar solutions of acid and base, both having an initial temperature of 22.5 °C, in an

asked by Chen on November 6, 2011
30. ## chem question i need help

I need help on this question. Could someone give me tips on how to solve it? thanks An emergency breathing apparatus often placed in mines works via the following chemical reaction: 4KO2(s) + 2CO2(g) to make 2K2CO3(s) + O2(g) If the oxygen supply becomes

asked by Jenn on February 27, 2007
31. ## chemistry

Write the equation for the reaction, if any, that occurs when each of the following experiments is performed under standard conditions. a) crystals of iodine are added to an aqueous solution of potassium bromide. b) liquid bromine is added to an aqueous

asked by Krystal on May 13, 2007
32. ## Math22

1. Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function y = f(u).] y= (g(x), f(u)) = 2. Write the composite function in the form f(g(x)). [Identify the inner function u = g(x) and the outer function

asked by Anonymous on October 7, 2014
33. ## Chemistry II

C4H4 (g) + 2 H2 (g) --> C4H8 (g) Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C4H4 (-2341

asked by Jayd on May 20, 2007
34. ## math

4.10:1.90 in the form of n:1

asked by osi on March 30, 2012
35. ## engineering

what is the SI form A)MN/ks^2 B)kN/ms

asked by ashley on September 3, 2008

what is -x^2+4=(3x-1)^2 in the form ax^2+bx+c=0

asked by zachary on July 25, 2009
37. ## Higher Maths

Show that these three points , P(-8,3), Q(-3,4),R(-6,-7), Form a right angled triangle and name the right angle? There are two ways of doing this: 1) determine the slopes for all lines, and the pair that have a right angle will have a negative inverse

asked by R0SS on September 1, 2005
38. ## chem

"The percentage of sodium hydrogen carbonate, NaHCO3, in a powder for stomach upsets is found by titrating .275 M hydrochloric acid. if 15.5 mL of hydrochloric acid is required to react with .500 g of the sample, what is the percentage of sodium hydrogen

asked by Dan on October 19, 2006
39. ## CHEM

1. How many moles of water can be made from 4 moles of oxygen gas and 16 moles of hydrogen gas? What is the limiting reagent? 2. Calculate the mass of water produced from the reaction of 24.0 g of H2 and 160.0 g of O2. What is the limiting reagent? 3. The

asked by Anonymous on June 1, 2008

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h,

asked by lucy on February 2, 2010
41. ## math

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h,

asked by lucy on February 2, 2010
42. ## math

i posted this can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h,

asked by lucy on February 1, 2010
43. ## Chemistry

Isopropyl alcohol, C3H7OH is an organic compound. It melts at -89 C and boils at 82.6 C. IT has a heat fusion of 88 J/g and a heat of vaporization of 733.33 J/g. The specific heat of liquid isopropyl alcohol is 2.68 J/g-C. The specific heat of its solid

asked by Sean Tristan on May 16, 2016
44. ## science

Name the type of reaction that the equation represents? 2Cu + O2 -------> 2CuO

asked by Natalie on February 11, 2012
45. ## Science:chemistry

Chlorine + sodium iodide does it react if it does what is the product of the reaction

asked by Cindy on November 5, 2018
46. ## Chemistry

How do I identify the reducing agent in a reaction of magnesium with oxygen?

asked by Jasmine on May 13, 2012
47. ## Science

Chlorine + sodium iodide does react if it does what is the product of the reaction

asked by Anonymous on November 5, 2018
48. ## CHEMISTRY

How many oxidation states Should a substance have at least to undergo Disproportionation reaction ? thanks

how is potassium sulfate prepared?explain with chemical reaction.

asked by R.M.Sabarish on April 14, 2010
50. ## Chemistry

need help to balance half reaction in basic solution IO3 to I2

asked by Shana on July 27, 2013
51. ## chemistry

What is the equation that represents the reaction of esterification of crystal violet? Thanks

asked by irma on March 4, 2015
52. ## kumar

The addition of a catalyst during a chemial reaction alters which of the following quantities?

asked by pawan on May 3, 2016
53. ## US history

what was the parliament's reaction to the Boston Tea Party of 1773 ?

asked by brianna on December 4, 2008
54. ## Chemistry

For the following fusion reaction, calculate the change in energy per mole. 2/1 H + 3/2 He -> 4/2 He + 1/1 H

asked by Anonymous on June 13, 2012
55. ## chemistry

briefly explain how to demostrate that all the reactants in a neutralization reaction has been used up

asked by Daniel on May 30, 2012
56. ## chem

What does it mean when the sulfuric acid in a chemical reaction is written ABOVE the arrow?

asked by chrissy on August 17, 2009
57. ## science

what substance is being reduced in the following redox reaction? HgCl2 + Sn^2 = Sn^4 + Hg2Cl2 + Cl-

asked by akos on June 29, 2012
58. ## Chemistry

2C10H22 + 31O2 = 20Co2 + 22H2O What kind of reaction is this?

asked by Isabella on February 19, 2012
59. ## chemestry

consider the reaction 2N2O(g) == O2(g)+2N2(g).which of the following will cause a shift in the equilibrium to the left?

asked by sara on November 1, 2014
60. ## Chemistry

Given the following reaction at equilibrium, if Kc = 1.90 x 1019 at 25.0 °C, Kp = __________. H2 (g) + Br2 (g) ↔ 2 HBr (g)

asked by Josh G. on November 17, 2012
61. ## Chemistry

How many atoms of iron will be produced from the reaction of 50 g of hematite and 25 g of carbon?

asked by Amanda on January 11, 2015
62. ## ap chemistry

What product is formed by this reaction: H2 + (CH)2 Answered the original post below.

asked by sara on October 29, 2006
63. ## Chemistry

C3H8 +________O2 ---------3CO+4H2O . Which is the balance the reaction A. 1 B. 7 C. 5 D.3

asked by Janet on January 20, 2018
64. ## wvuit

calculate the enthalpy change for the reaction n2h4(l) + 02(g) --> n2(g) + 2h20(l)

asked by elizabeth on February 18, 2012
65. ## chemistry

What element is undergoing reduction in the following reaction? Zn(s) + AgNO3(aq) --> Zn(NO3)2 + 2 Ag(s)

asked by candace on March 1, 2010
66. ## science

what is the difference between a chemical reaction ans physical separation.

asked by nina on February 8, 2009
67. ## chem

what mass of Cl2 is produced from the reaction of 665 g of Hal

asked by Anonymous on April 18, 2016
68. ## chemistry

what is the source of activation energy in an exothermic reaction? Is an example heat?

asked by chemistry on April 3, 2018
69. ## biology

does dark reaction helps in transmittance and conservation of energy

asked by AYESHA on June 26, 2014
70. ## Science

Is this statement true or false? An antigen causes an allergic reaction. Please and thank you!

asked by Shantelle on October 30, 2008
71. ## chemistry

I need the half reactions for this redox reaction: 2KClO3-----> 2KCl + 3 O2

asked by donna on June 9, 2013
72. ## Science

The reaction between sulphuric acid and iron (III) hydroxide [Fe(OH)3] gives

asked by Vanshika on June 22, 2016
73. ## Science

What Type of Simple Chemical Reaction Occurs in Fireworks?

asked by Brianna on September 18, 2014
74. ## Chem

Is this reaction endothermic or exothermic? Ca(C2H3O2)2(s) = Ca2+(aq) + 2C2H3O2-(aq)

asked by Chris on November 13, 2012
75. ## biology

an organism's reaction to a change in its intenal or external enviroment

asked by darlene on August 25, 2011
76. ## college

Kp for the reaction CO2(g) + C(s) 2CO(g) is 1.47 at 727°C. Calculate Kc at this temperature

asked by gggg on July 22, 2012
77. ## biology

Describe the to type of energy changes that can occur in a chemical reaction Thanks

asked by glenn help help help on February 1, 2012
78. ## chemistry

n the reaction 2CO(g) + O2(g) ® 2CO2(g) what is the correct expression of the rate?

asked by qwatissia on June 10, 2010
79. ## chemisrty

What is ΔGo at 1000 oC for the following reaction? CaCO3 (s) CaO (s) + CO2 (g)

asked by laquisha on November 27, 2012
80. ## Chemistry

Balance Redox using reactions by the 1/2 reaction method. NaIO3 (aq) + KI (aq) -->„³ I2 (s)

asked by Jenny on May 22, 2014
81. ## CHEMISTRY

WHICH IS LIMITING REAGENT IN FOLLOEING REACTION 3Mg +N2 =Mg3N2

asked by AYESHA on May 22, 2014
82. ## Chemistry

what type of reaction is AgF + CaCl2 --> AgCL + CaF2 ?

asked by Toni on January 11, 2013
83. ## biology

how is it possible for an enzyne to lower the required energy of activation for a reaction.

asked by jessi on December 14, 2010
84. ## chemistry

ferus amonium sulphate reaction with sulphuric acid

asked by ferus on August 16, 2014
85. ## science

How far does your automobile travel in meters during your reaction time if you are moving at 55 mi/h (25 m/s)?

asked by Nicole on September 6, 2014
86. ## English

Contrat the reaction of Hamlet, Laertes to their father's death.

asked by Lorielle on January 25, 2010
87. ## chemistry

Kp for the reaction is 1.47 at 727°S CO2(g) + C(s) 2CO(g) Calculate Kc at this temperature

asked by ken on July 21, 2012
88. ## chemistry

write a balanced equation for the chain reaction AL2O3

asked by Nancy on July 13, 2013
89. ## Chemistry

Compute the equilibrium constant for the reaction between Ni 2+ (aq) and Co (s). I'm not sure how to work out this problem. Could you please help me out? thanks.

asked by Karley on April 22, 2010
90. ## Chemistry

how many electrons take part in redox reaction: Cl2 -> ClO3^-

asked by yoshii on January 23, 2013
91. ## Chemistry

Calculate delta G of a reaction with equilibrium constant, K= 9.5 x 10^5 at 25 degrees C

asked by Matthew on July 10, 2013
92. ## chemistry

At 1100 K, Kp = 0.25 for the reaction 2SO2(g) + O2(g) equilibrium with 2SO3(g) What is the value of Kc at this temperature?

asked by Wolf on October 9, 2007
93. ## Physical science

What did svante arrhenius discover about the reaction between an Acid and a Base?

asked by Siphelele on August 22, 2014
94. ## Chemistry

Here is a chemical reaction Fe + O2--> Fe2+O3 what was Antonie Lavoiser rusting?

asked by Anonymous on February 11, 2010
95. ## Chemistry

Will there be a reaction if a magnesium strip is placed in a solution containing Zn2+ ions?

asked by Sanjay on September 18, 2018
96. ## chemistry

C+HNO3=H2CO3+H2O+NO2 which type of reaction is it.

asked by RAHUL SAHU on June 7, 2014
97. ## chemistry

how can AgCl(s) be dissolved completely? write an equation for the reaction

asked by anon on October 25, 2010
98. ## chemistry

The "REVERSIBLE" chemical reaction- A + B C + D Kc = CD / AB =4.4 Concentration at the start and after equilibrium- A = 1.00 M --> (1.00 - X) M B = 2.00 M --> (2.00 - X) M C = 0.00 M --> X M D = 0.00 M --> X M 4.4 = X^2 / (1.00-X)(2.00 - X) I'm not sure

asked by Saira on February 5, 2009
99. ## chemistry

what type of reaction is 2KCLO3+heat-2KCL+3O2

asked by cody on July 17, 2008
100. ## science

The rate constants for a first order decay reaction are found to be:

asked by hermy on January 12, 2013