Wednesday
April 23, 2014

Search: Using enthalpies of formation in Appendix C, calculate delta H for this reaction. 2al(s)+Fe2o3(s)-->al2o3(s)+2fe(s)

Number of results: 33,265

Physics please please help me
You can do of this by using one these methods >> Using the distance formula Using trigonometry Using the Pythagorean theorem Using Ptolemy's theorem By comparing areas Using geometry of the circle
Wednesday, November 16, 2011 at 2:10pm by HM

Reading
Next to Willow,our school is in the Dark Ages. How does the author organize the support for this argument? A.By using cause and effect B.By using comparisons C.By using problem and solution D.By using opinions B?
Wednesday, March 7, 2012 at 5:30pm by Colton

science
4.which of the following describes the use of a renewable form of energy? (1 point). a. using natural gas to heat a house b. using a windmill to grind grain c. using petroleum to run a car d. using coal to generate electricity
Tuesday, February 11, 2014 at 4:50pm by bla

math
how do you write seven names for 8.Using only numbers less then 10 and using at least three different operations in each name.Using also parentheses.?
Wednesday, February 9, 2011 at 7:45pm by suzie

Chemistry
I don't know what you're doing, and it would help if you showed your work so we could find the error, but I get something like 60 or so for K. Are you using dG = 10310 J? You may be using kJ or cal or Kcal. Are you using 8.314 for R?
Tuesday, March 18, 2014 at 2:52pm by DrBob222

biology
4. Using sunscreen and consuming energy drinks involve _____________________. A. using biological information to make informed decisions B. risks to using biotechnology C. using genomics to make informed decisions D. all of the above
Wednesday, October 23, 2013 at 11:55am by hannah

writing
20) Which of the following is not a way to limit an internet, database, or card catalog search? a) Using a plus sign (+) when searching b) Using all CAPITAL LETTERS when searching c) Using “quotation marks” when searching d) Using a minus (-) sign when searching
Thursday, May 10, 2012 at 10:57am by Anonymous

English
Thank you for using the Jiskha Homework Help Forum. It seems an ad using "you" is directed to individuals. Perhaps one would listen more carefully using the second person.
Monday, September 3, 2007 at 11:26pm by SraJMcGin

mATH
Using order of operations, create a formula that = 8 using four 6's 6 ___ 6 ____ 6 ______6 =8 fill in the blanks. It's the only one we can't figure out without using five 6's (6/6) +(6/6) +6 = 8
Tuesday, September 6, 2011 at 5:41pm by Terry

physical science
Explain using newtons first law why traveling car using a rope is dangerous compared using a steel car
Monday, February 3, 2014 at 11:00pm by bohlale

Math
Construct a number out of the several other numbers by using BODMAS. e.g Make 5 using 1,2 and 3. Answer is (3 + 2) * 1. Question. Make 17 using 1,2,6 and 7
Tuesday, June 18, 2013 at 7:23am by olafam

epp
pls this is just a simple question how can plants grow using the branch? using the fruit? ang using the head? pls answer in english or tagalog, thank you!!!
Tuesday, February 19, 2008 at 7:11am by renz anthony

MATH PLESE
I didn't know Harvard was in Kansas. And you and Dave are using the same computer internet provide address so he must be using your computer or at least by using your wireless connection.
Sunday, January 27, 2013 at 8:29pm by Ms. Sue

math
If I understand your question correctly, using 1 dot -- 1 way using 2 dots -- 2! or 2 ways using 3 dots -- 3! or 6 ways using 4 dots -- 4! or 24 ways running total = 33 so we have to go to 5 dots, which would give us an extra 120 ways, enough to handle the 94 needed.
Saturday, April 17, 2010 at 1:39am by Reiny

COMPUTER
Well, you are using a computer right now aren't you? Your looking at your monitor, your using your mouse to click stuff, and your using your keyboard to type. If you want like a book definition, just try googling it.
Saturday, February 21, 2009 at 2:43pm by Chopsticks

Geometryy
given that sec theta = radical13/whole number 3, and csctheta<0 find sin theta using the 2different methods; 1)using the "x-y-r" definition 2) using identities only
Friday, September 2, 2011 at 8:42pm by Jaime

Math
Mr. White notices that of the 30 students in his science class, 18 are using yellow pencils, 6 are using blue pencils, 4 are using erasable ink pens, and 2 are using mechanical pencils. If his class is representative of the student body, and there are 600 students in the ...
Tuesday, March 4, 2014 at 5:03pm by Anonymous

Calculus
x f(x) 0 1 1 e 2 e^4 So, if there are 2 rectangles of width 1, then the area, using left-sides is 1*1 + 1*e = e+1 = 3.718 using right-sides, it's 1*e + 1*e^4 = 57.316 Using the trapezoidal rule, we have 1(1+e)/2 + 1(e+e^4)/2 = 30.517 Kind of a coarse approximation.
Thursday, December 5, 2013 at 5:05pm by Steve

algebra
There are three important numbers coming from the factors, 0, -1, and 3 test using numbers around those numbers. Using -2 because it is less than -1 (-2)(-2+1)(-2-3) =-10 which is < 12 Using -.5 because it is between -1 and 0 (-.5)(-.5+1)(-.5-3)=.875 which is <12 Using 1...
Saturday, March 3, 2012 at 12:19pm by BOB

conditional sentence
1. If the sound system hadn't failed,last night's show would have been better a. this is a correct sentence using the 1st conditional form b. this is correct sentence using the 2nd conditional form C. this is a correct sentence using the 3rd conditional form answer A 2. They'...
Wednesday, June 12, 2013 at 6:04am by Jim Collum

Grammar Advisor
I just cannot figure out if these answers are correct or not. Can you please help me? 78. If the sound system hadn’t failed, last night’s show would have been better. This is a correct sentence using the 1st conditional form. x This is a correct sentence using the 2nd ...
Wednesday, September 25, 2013 at 10:13pm by William

Using souces and avoiding plagirism
Question 4 What is a summary? a brief restatement using your own words an extended restatement that includes in-depth analysis a brief restatement using quotations an exact quotation of the main idea my answer a brief restatement using your own words
Wednesday, April 28, 2010 at 10:29am by christopher

Calculus
Question Details: Do the following. (Round your answers to four decimal places.) (a) Estimate the area under the graph of f(x) = 8 + 2x2 from x = -1 to x = 2 using three rectangles and right end-points. R3 = 1 Improve your estimate by using six rectangles. R6 = 2 (b) Repeat ...
Monday, April 26, 2010 at 5:52pm by Cindy

college finite math
A product may be made using Machine I or Machine II. The manufacturer estimates that the monthly fixed costs of using Machine I are $17,000, whereas the monthly fixed costs of using Machine II are $14,000. The variable costs of manufacturing 1 unit of the product using Machine...
Sunday, January 19, 2014 at 7:36pm by Dee

Physics
Thank you! By the way, using 101325 instead of 1.01e+05 and using pi instead of 3.14 gives a more accurate answer. Using these values gives me 80425.39066 N, which rounds down to 80400 N.
Monday, July 2, 2012 at 10:29pm by James

conditional sentence
1. If the sound system hadn't failed, last night's show would have been better. a. this is a correct sentence using the 2nd conditional form b. this is a sentence using the 3rd conditional form Answer a. 3. if the club's manager agrees, they'll play a few more original songs ...
Wednesday, June 12, 2013 at 2:34pm by Jim Collum

math
Mike makees the following table of the distances he travels during the first day of the trip. A suppose Mike continues riding at this rate. Write an equation for the distance mike travles after t hours. B sketch a graph of the equation. How did you choose the range of values ...
Monday, August 29, 2011 at 8:39pm by david

Chemistry
I have two questions. The first is are you using aspirin as the acid or as the sodium salt of the acid? Second question, if acid, then what are you using for Ka? If you using it as the Na salt, I've probably worked #1 wrong.
Saturday, November 26, 2011 at 8:14pm by DrBob222

Quantum Physics
My answer is correct...take it or leave it ...Q8d theta:2*B*t and phi 3pi/2..stop using my name...and confusing others...guys trust me... and stop This is my last post... anyone using pari is fake!!!I am going to report those using my name!!
Saturday, October 12, 2013 at 10:36pm by Pari

Tetraploid species
Tetraploid species hybrid = example of a) aneuploidy b) autopolyploidy c) allopolyploiy d) endomitosis B? Down's syndrome = a) aneuploidy b) polyploidy c) triploidy d) autopolyploidy A? How do you increase large amounts of DNA in lab for region of 100kb gene? a) using plasmids...
Monday, October 17, 2011 at 7:54pm by Mysterious

organic chem
It depends upon what you are using for the source of heat. If you are using an electrical system, such as a heating mantle, then its done with a rheostat. Using an open flame you would decrease the flame, etc. These are guesses since you don't specify a heating source.
Saturday, December 1, 2007 at 5:10pm by DrBob222

french
Rewrite the following statements using negation. 1.) Il parle espagnol. 2.) J'etudie Change the following statements in questions using inversion. 1.) Vous jouez au foot. 2.) Marie est ici. The following sentence is written using the "est-ce que" techinque. rewrite it using ...
Tuesday, January 3, 2012 at 9:16am by ALISA

english
Here is my outline can you tell me if it is any good? I. Several organizations are say that using the Native American names and mascots are offensive, however, most Americans including American Indians believe that using Native American names and mascots are not offensive. A. ...
Wednesday, September 3, 2008 at 10:25pm by Anonymous

HEALTH
How do you lose weight? A. By using up more energy than you take in B. By using up more money on diet programs and pills C. By using up more calories than you take in D. By using up less energy than you take in A?
Wednesday, August 1, 2012 at 2:52pm by Aya

HEATH
How do you lose weight? A. By using up more energy than you take in B. By using up more money on diet programs and pills C. By using up more calories than you take in D. By using up less energy than you take in' C?
Wednesday, August 1, 2012 at 2:53pm by Aya

spanish
Thank you for using the Jiskha Homework Help Forum. You might also say: El viaje era (or fue, if you consider it over and done with vs. description) una gran experiencia. Using "grande" afterwards can be large, bit, great but using "gran" before the noun can be "famous, great...
Thursday, February 28, 2008 at 7:41pm by SraJMcGin

Health
How do you lose weight? A. By using up less calories than you take in B. By using up more money on diet programs and pills C. By using up less energy than you take in D. By using up more calories than you take in I think it's D.
Wednesday, August 21, 2013 at 1:11pm by Brandon

reading
what are 2 sentences using the word overwhelm? what are 2 sentences using the word hysterically? what are 2 sentences using the word appetizing? Also sorry for the 3 questions,but I must finish my mission.THANK YOU!
Tuesday, January 3, 2012 at 4:23pm by Madlekia

Calculus 2
Evalute the integral of x/(x^2+4)dx using u-substitution and then trigonometric substitution. I did this and got (1/2)ln(x^2+4)+C using u-substitution and x^2+4+C using trigonometric substitution. What did I do wrong??? thank you for helping!
Wednesday, October 10, 2012 at 6:54pm by Heather

Calculus
Take the definition of the area using the sum of the rectangles using the left endpoint added to the area by using the right endpoints is equal to twice the area using the average midpoint. http://faculty.eicc.edu/bwood/math150supnotes/supplemental21.html
Sunday, January 24, 2010 at 11:00am by bobpursley

Math 6
What is the expanded form using powers of 10 and using exponents of 7,375?
Thursday, September 8, 2011 at 6:15pm by Alyssa

math
What is the benefit of using a longer ramp opposed to using a shorter one?
Wednesday, April 24, 2013 at 5:41pm by Anonymous

algebra
c'mon, babe. the slope is 9/5, so the line is Using (0,-6), we get y = 9/5 x - 6 or, using (5,3) y = 9/5 (x-5) + 3 which is the same thing.
Sunday, November 3, 2013 at 5:37am by Steve

calculus
using 5 rectangles what is the area under a curve using the function f(x)=x with boundries at [-2,3]
Tuesday, November 5, 2013 at 2:50am by Jordan

algebra
No I mean how do you add them using common denominator? not using decimal or calculator
Tuesday, April 8, 2014 at 7:27pm by Steve

Adv. Algebra- Conics
correction: using x^2/a^2 = y^2/b^2 = -1 should say using x^2/a^2 - y^2/b^2 = -1
Monday, November 19, 2007 at 12:26am by Reiny

english
Instead of using the words "flanked by", try using the phrase "with you".
Tuesday, November 25, 2008 at 11:10am by GuruBlue

Math
127=7^3-6^3 7^3 all 3-digit numbers, formed using 1,2,3,4,5,6,7 6^3 ... using 1,3,4,5,6,7
Saturday, May 7, 2011 at 3:05pm by Mgraph

help please
You're welcome, Ciara. And thanks for using the same name you've been using for your posts.
Sunday, September 25, 2011 at 9:26pm by Ms. Sue

stat
Explain why using the t statistic may be an appropriate alternative to using a z-score
Tuesday, February 5, 2013 at 10:05pm by Tracy

american literature
WHEN CATHER DESCRIBES THE TOWN AS "TRYING NOT TO BE BLOWN AWAY, SHE'S USING A USING KNOWN AS
Tuesday, June 3, 2008 at 9:40am by Anonymous

spanish
USING SER + DE HOW DO I MAKE A SENTENCE USING THEM WITH LINA Y MARIA / COLOMBIA
Thursday, October 29, 2009 at 10:35am by BARBARA

biology
What advantages did using the elodea stalk have over using its leaf or leaves?
Thursday, November 11, 2010 at 7:23pm by js

Algebra
Using complete sentences, explain how to graph y = x - 2 using the slope-intercept method.
Sunday, July 24, 2011 at 7:11pm by Kelvin

pre calc
how do u solve for x and y of x+2y=7 2x+y=8 using matrix without using a calculator
Wednesday, May 8, 2013 at 8:19pm by pink

calculus
using 5 rectangles what is the area under a curve using the function f(x)=3x+4 with boundries at [0,2]
Tuesday, November 5, 2013 at 2:49am by Jordan

calculus
using 5 rectangles what is the area under a curve using the function f(x)=3x+4 with boundries at [0,2]
Tuesday, November 5, 2013 at 2:52am by Jordan

help
How do you lose weight? A. By using up less energy than you take in B. By using up more money on diet programs and pills C. By using up less calories than you take in D. By using up more calories than you take in
Sunday, June 30, 2013 at 10:19pm by Anonymous

math
How is a determinant found using expansion by minors? The only way I was taught to do it was by using diagonals.
Friday, January 2, 2009 at 5:14pm by Anonymous

science
how do you sepeate a mixture of iron and sulphur using a physical method without using a magnet
Tuesday, February 17, 2009 at 9:09am by Ruan van Rooyen

Gym
how do you get 24 by using numbers 1-12 by going up,down,and diagonal and by using addition
Thursday, January 27, 2011 at 5:24pm by Caitlin

8th grade honors english
What guidelines are you using? MLA? APA? What types of sources are you using?
Tuesday, March 8, 2011 at 9:14pm by Writeacher

APTITUDE
HOW CAN WE WRITE 14 SEPTEMBER 2011 BY USING FIVE LETTERS WITHOUT USING NUMBERS
Wednesday, September 14, 2011 at 1:02pm by ANJAN

spell
i need to think of a sentence using bankrupt but using two singular possessive nouns help
Wednesday, January 9, 2013 at 8:17pm by spelling

trig
How to get 5degree without using calculator using identities?
Friday, January 20, 2012 at 10:20pm by Laurnece

Math
How do you make this true Using 48, 6, 2, and 5 =18 by using (+, -, x, or /)
Thursday, October 4, 2012 at 10:17am by Jack

science
which of the following would help decrease the human ecological footprint? A.using bottled water instead of tap water B.using public transportation instead of riding in a car C.buying books instead of borrowing from the library D.using hot water instead of cold water to wash ...
Monday, December 9, 2013 at 5:14pm by Marco

American History
Thank you for using the Jiskha Homework Help Forum. Don't forget that using a GOOGLE search for any of those things will help.
Tuesday, April 29, 2008 at 12:44am by SraJMcGin

English
Everything looks good except this phrase: "using the expression as as" I'd change it to this: "using expressions such as these:"
Thursday, March 12, 2009 at 3:24pm by Writeacher

geometry
using a table of values, record the lenght and widths of each pen cosntructed using 24 m of fencing
Sunday, March 28, 2010 at 12:21pm by sadie

first steps in using a personal computer
You're guessing. What are you using for instructional materials? A textbook? Trial and error? What?
Wednesday, November 13, 2013 at 12:50pm by Writeacher

Math - Probability Statistics
P(E)=.4, P(F)=.5 and P(E[intersect]F)=.1 , Calculate P(F|E)=? Using conditional probability, I got .2 as the answer, using: P(E[interstect F)/P(F) = .1/.5 = .2 Calculate P(E|F) is .25 using: P(E[intersect F)/P(E) = .1/.4 =.25 Is this now correct?
Monday, August 31, 2009 at 7:40pm by Dee

english
how do i express sighing by using punctuations instead of using the word "sigh", or is there any other way to do it beside punctuation
Tuesday, May 25, 2010 at 5:22pm by flame

math
How many different ways can you make change using 25-cents coin using dimes, nickels and pennies?
Wednesday, September 22, 2010 at 4:33pm by Matt

Math
simplify using the exponent law. express your answer using positive exponents only. (x^2)^3(2x^3)^-3/(4x)^2
Sunday, March 18, 2012 at 8:45pm by Hanu

Chemistry
Damon, that's not the math we are using. That is more advanced. Currently, we are using the equations between density, mass, and volume.
Thursday, February 27, 2014 at 6:12pm by Kelsi

chemistry
What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. Answer A. pH >14, using 2.5 M NaOH (aq) B. pH 1, using 0.1 M HCl (aq) C. pH 6.2, using 0.1 M NaHCO3 (aq)
Thursday, May 30, 2013 at 9:41am by A

chemistry
What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from. Answer A. pH >14, using 2.5 M NaOH (aq) B. pH 1, using 0.1 M HCl (aq) C. pH 6.2, using 0.1 M NaHCO3 (aq)
Thursday, May 30, 2013 at 6:04pm by A

Chemistry
You want the pH of the buffer to be 7.5; therefore, calculate the ratio of base to acid using the Henderson-Hasselbalch equation. pH = 7.2 + log(base/acid). Solve for B/A. I get something like 2. You have two unknowns; you need another equation. That is acid + base = 0.05 ...
Sunday, September 19, 2010 at 1:58pm by DrBob222

Analytic Goemetry
In this case we don't know anything about the vertex, so we have to use the more general equation of the form x = ay^2 + by + c using (3/2 , 1) --- 3/2 = a + b + c using (5,0 ) ------ 5 = 0+0+c or c=5 using (-1,2) ----- -1 = 4a + 2b + c from the 2nd we know c=5 so in the first...
Wednesday, March 23, 2011 at 7:12am by Reiny

undecipherable encoding
We are not able to read the special characters using the usual Western-ISO 8859-1 encoding. Please repost using the above encoding or a specified encoding. You can find the character encoding using your browser at: View/character encoding (firefox) or View/encodeing (Internet ...
Wednesday, May 25, 2011 at 8:46pm by MathMate

Computers
The test data I'm using is y = 3. I tried using a trace table, but I get back to 2. Not sure how to get an answer in the form x * Z - y. Any help will be much appreciated. Thanks
Thursday, August 27, 2009 at 9:10am by Dave

Math
Simplify using the exponent law. Express your answer using positive exponents only. [4x^1/3]^1/2 [9x]^-3/2 / [27x]^-1/3
Monday, March 19, 2012 at 9:56pm by Hanu

Math
Write using statement using absolute value notation a) The distance between y and -2 is greater than or equal to 4 b) Y is more than d units from C.
Wednesday, August 29, 2012 at 9:07pm by Sarah

science
Using your knowledge of physiology, genes and evolution, discuss organism adaptations to the environment using clear and specific examples.
Tuesday, April 8, 2014 at 4:59pm by steven

12th grade
Hey I have an exam tomorrow and I cant understand this things.. Help me please .. 1: Derivative using the limit concept 2: Determine a Derivative using the theorems. 3:Evaluate velocity at the beginning and at the end 4: Using implicit derivation and find the normal and the ...
Tuesday, October 7, 2008 at 12:28am by Sidse

math - undecipherable encoding
We are not able to read the special characters using the usual Western-ISO 8859-1 encoding. Please repost using the above encoding or a specified encoding. You can find the character encoding using your browser at: View/character encoding (firefox) or View/encodeing (Internet ...
Wednesday, May 25, 2011 at 8:45pm by MathMate

Science Help!
3. Using coal for fuel releases pollution into the atmosphere. Why do people continue to use coal if it causes pollution? A. Using more coal reduces the amount of pollution from using oil B. Using coal is relatively inexpensive. C. Mining coal helps scientist uncover fossils D...
Monday, February 3, 2014 at 4:03pm by Jonathan

Science
What are some problems that can arise when using recrystallization in an experiment? One could be not using the appropiate solvent... any other suggestions? Thanks ahead of time.
Monday, October 8, 2007 at 7:30pm by Meche

ENVIRONMENTAL SCIENCE
1. How to keep from using so much so fast 2. Finding substitutes 3. Using some of the profits to solve the two above problems
Tuesday, November 20, 2007 at 5:27pm by Ms. Sue

Alg 2
Is there another way to find the roots of 3rd degree and higher polynomials instead of using trial and error (using synthetic division)?
Friday, May 7, 2010 at 8:52pm by Jak

functions
for example graph e^(x) and then e^(5*x) note you have to be really careful about using parentheses and * for "times" when using graphing software) try x and x^(1/3)
Wednesday, September 7, 2011 at 6:09pm by Damon

reading/language arts
write a paragraph about using resources responsibly using these three words:renewable,nonrenewable,generate.
Friday, January 11, 2013 at 8:37pm by Ana

Geography HELP
1. Measure the room. 2. Decide you big you want to make the map. I suggest using an 8 1/2 by 11 inch piece of graph paper. 3. Decide on a scale. Perhaps 1/2 inch = 1 foot. 4. Using the scale and the actual dimensions of the room, draw your map, using a straight edge.
Friday, November 22, 2013 at 8:32pm by Ms. Sue

chem
so i plugged int he information that i have from the question... i am using an electronic based hmwk. it says that the answers that i have gotten are wrong... here is what i have come up with.... with using PV=nRT i got a pressure of 12.6012 atm... with using the van der w. i ...
Saturday, November 17, 2007 at 10:02pm by mel

Physics
I tried using a method similar to yours earlier, but I got around 70 to 80 degrees C when using it, so I tried another method. I get the same answer of 24.6C when using my method, so I'm confused as to why you don't like it. Also, when I use the specific heat of mild steel as...
Tuesday, July 24, 2012 at 7:45pm by James

science
Preservation of resources means ______.? a) only maintaining the environment b) using resources with little thought to the future c) maintaining and restoring the environment d) using resources with a maximum of waste e) using resources with a minimum of waste I PICKED C
Tuesday, September 7, 2010 at 3:42pm by pam

Algebra
How can I put in another way using the formula for the equation on L=2.43*W^0.3326. My first answer were given to me using the log system is there another way I can set this up without using log. My instructor mention that w to the power of .3326 then multiply by 2.43 if an ...
Wednesday, June 23, 2010 at 5:08pm by Mayl

Calculus
Estimate the area under the graph of f(x) = 2x^3 + 3 from x= -1 to x=5, first using 6 approximating rectangle and right endpoints, and then improving your estimate using 12 approximating rectangles and right endpoints. When using the left and right endpoints, is there a ...
Tuesday, November 10, 2009 at 7:29pm by Z32

spanish
Thank you for using the Jiskha Homework Help Forum. Anna is using better grammar4: Son las tres menos quince in punto. Sra
Tuesday, October 7, 2008 at 9:33pm by SraJMcGin

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