Questions Asked on
September 3, 2008

  1. Chemistry

    Balance the following redox equations. All occur in Acidic solutions. 1. Cr2O7^2-^ + C2O4^2-^ -> Cr^3+^ + CO2 2. Cu + NO3^-^ -> CU^2+^ + NO 3. MnO2+ HNO2 -> Mn^2+^ + NO3^-^ 4. PbO2 + Mn^2+^ + SO4^2-^ -> PbSO4 + MnO4^-^ 5. HNO2 + Cr2O7^2-^ -> Cr^3+^ +

    asked by Yukiko
  2. engineering

    evaluate each of the following and express with SI units having an appropriate prefix: (1) (50mN)(6GN) (2) (400mm) (0.6MN)^2 (3) 45 MN^3/900Gg

    asked by ashley
  3. French

    Hey I was in french immersion last year, but now I'm not cuz I moved, and I'm wondering, is there a website so I can catch up on my french so I'll be able to at least UNDERSTAND french? thanks! ~jason~

    asked by Jason
  4. Reading

    Explain the diferent between expositorty nonfiction and narrative nonfiction?

    asked by Angel
  5. Chemistry 2 Ap

    Calculate the masses of Cr2O3, N2, H20 produced from 10.8 g (NH4)2Cr2O7 [ the 2 belongs to the nh4] in an ammonium dichromate volcano reaction. I need to know what the balance equation is, and im having a little trouble with it. Pleasee help!

    asked by jecce.
  6. science

    What non living thing can reproduce, grow and repair themselves?

    asked by sam
  7. Math

    what is the longest multiplication combination for 120

    asked by Kelsey
  8. math

    A motorboat can maintain a constant speed of 16 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 20 minutes and the return trip takes 15 minutes. What is the speed of the current?

    asked by leila
  9. mathematics

    a boat travels 12 km upstream and back in 1 hour and 45 min.if the speed of the current is 3 km/h throughout,find the speed of the boat in still water,giving your answer correct to 3 decimal place. NOTE:(Answer is 14.3 km/h,so can any one show me the

    asked by alyshan
  10. Note to William

    Thank you for your contributions to the Jiskha forum this evening. However, I removed one of your posts because you gave your full name and a reference to Facebook. In order to keep everyone safe, we don't permit personal information on this board.

    asked by Ms. Sue
  11. math

    A motorboat can maintain a constant speed of 16 miles per hour relative to the water. The boat makes a trip upstream to a certain point in 20 minutes and the return trip takes 15 minutes. What is the speed of the current?

    asked by leila
  12. economics. urgent

    Assuming that shoes have a world price of US$60 a pair, that the EU has a 45% ad valorem import duty on footwear which applies to all types of footwear and an Italian company is proposing a project to substitute 150,000 pairs of imported shoes by

    asked by gosh
  13. math !!!

    2cosx + 1 = 0 solve the equation for solutions in the interval : 0 < x < 2pie those are less than or equal too signs

    asked by Amy
  14. Chemistry

    Label the oxidizing agent and the reducing agent: a) P4(s) + 5O2(g) -> P4O10(s) b) Co(s) + Cl2(g) -> CoCl2(s) c) Fe2O3(s) + 3CO(g) -> 2Fe(s) + 3CO2(g) d) PbS(s) + 4H2O2(aq) -> PbSO4(s) + 4H2O(l) I never learned about oxidation numbers. Thanks!

    asked by Yuval
  15. science

    what are some sources of carbon dioxide?

    asked by Anonymous
  16. Math integral

    What is the integral of 1/(x√(x^2-4)) dx? So I know that I am going to have to factor out the 4 and use the arcsec trig identity but I've having trouble getting to a viable u-substitution. I've gotten to factoring like this so far: √(x^2-4) =

    asked by Terry
  17. geometry

    how many planes contain the same collinear points?

    asked by jasmyn
  18. math

    Identify the rate,base, and amount in the following application at this point. Business and finance. In a shipment of 750 parts, 75 were found to be defective. ahat percent of the parts were faulty?

    asked by Joe
  19. Math

    Place value through thousandths: What is the word form for 1 minute, 38.29 seconds?

    asked by MicKayla
  20. chem

    what type of bond are nitrogen and carbon atoms mostly like to form with other bonds.

    asked by Adam
  21. Math

    2x4²(4 squared) that is the math problem i cant figure out if 4² means 4x4 or if it measns 4x4x4x4 please help its the sendond day of grade 9 ,, i don't wanna look dum

    asked by Stephenie
  22. Math

    Can you help me with my son's homework question: Maria earned $110, which is $86 more than twice the amount Joan earned. How much did Joan earn? a. $12 b. $18 c. $24 d. $30 I would like to know the 5th grade equation that represents the answer. I guess I'm

    asked by Rich
  23. mentor high

    What is the density of carbon dioxide gas if 0.196 g occupies a volume of 100 ml?

    asked by nick
  24. math

    3(a/7)+7(a/3) answer 3a/21+7a/21 = 10a/21 am i on track

    asked by alex
  25. 7th grade

    wht is the 8 parts of speech

    asked by laura belizaire
  26. English 2 honors

    can someone please give me a website to go to, to find these stems please,or can you please tell me the meanings for these stems: per- gamy gyn/gyno mania path phobia psych soph annus cap/capit cor/cord homo manu milli ped/pod sect -ary -ence/-ance -some

    asked by megan
  27. Math

    Express the diameter of a 3\22 inch twist drill as a decimal

    asked by Miranda
  28. english language arts

    4)The cross-country team ran (down the avenue) and (through the park).

    asked by george
  29. language arts 8th grade

    blank is to vain as modest is to conceited define the words part in the sentence: Everyone should listen to the teacher. sorry it sounds so easy but i have trouble plz and thanks.

    asked by taylor
  30. math

    how do you use long division to do 0.18 divided by 0.3

    asked by martha
  31. Math

    2x4²(4 squared) that is the math problem i cant figure out if 4² means 4x4 or if it measns 4x4x4x4 please help its the sendond day of grade 9 ,, i don't wanna look dum

    asked by Stephenie
  32. History

    What should never be compromised?

    asked by Jane
  33. 6th grade

    What of the following is a wordrocessing program? a.Internet Explore b.FrontPage c.QuckBooks d.Word

    asked by Albree
  34. math

    Identify the rate, base, and amount in each rate 75% statement or question. Do not solve the base 150 exercise at this point. 150 is 75% of what number?

    asked by Veronica
  35. math, algebra

    solve for x 2 - 5x = -1 - 4x

    asked by Kyle
  36. speech

    how can language be a barrier in a situation? How can language be beneficial in a situation?

    asked by leigh
  37. french

    How do you say in french: No,I don't visit them on vacation. I have: Non, je ne leur rends pas visite a vacances.

    asked by laurel
  38. literature

    The lyceum movement was an expression of New England's interest in what?

    asked by mysterychicken
  39. Engineering Foundations 2

    engineering foundations 2 calculations and converstions question. How do I round off the following number to three significant figures? Or can you give me an example of how to round off number 3. 4555N Would I round off this to be 4555N to be 4555.00N 3.

    asked by carmen
  40. 10th grade

    Engineering Foundations 2 Calculations converstions How do I put this combination in the correct SI form? MN/ks2 kN/ms

    asked by carmen
  41. 6th grade

    can anyone help me I need to know how to get the prime factorization of a number using exponents

    asked by nick
  42. economics

    Can someone assist me with these two questions. Thanks A perfectly competitive firm's demand is ____________ elastic and equal to ____________ which is equal to ____________. A firm is allocating 16 hours a day on its assembly line to producing goods A and

    asked by natalie
  43. artist

    what are the elements

    asked by austjin
  44. geometry

    multiple choice always,sometimes,never A plane containing two points of a line_________contains the entire line?

    asked by jasmyn
  45. engineering

    represent each of the following to three significant figures and express each answer in SI units using an appropriate prefix: a)1568(10^5)mm b)0.005 63 mg

    asked by ashley
  46. english/language arts

    Where are the prpositions and what are their subjects(some of them contain more than one? 1)Chhirps of the newly hatched chicks could be heard in the corridor. 2)A plane made an emergancy landing in a corn field. 3)The elephants lumbered past us toward the

    asked by Phillip
  47. something

    identify prepositions and subjects some have more than 1 1)The puppy came to our tent and slept at the foot of my sleeping bag. 2)A skywriter flew over the field during the game. 3)The city was without power for several hours 4)The cross-country team ran

    asked by George
  48. math

    complete each statement. (round to the nearest hundreth). 7L= ------ qt

    asked by Veronica
  49. Math

    is 1 really an odd number i think its was neither odd or even

    asked by carle
  50. Math

    Solve the question: sin(2x)=cos(x), for values of x between 0 and 2 Pi

    asked by Ryomasa
  51. math

    how many 2-point coupons and 5-point coupons does Noelani have?

    asked by amanda
  52. Math

    Solve the equation for solutions in the interval 0 < x < 2pie those are supposed to be less than or equal too signs

    asked by Amy
  53. algebra

    divanna scored 67% on her test. IF she had paid closer attention to signs, she would have had 2 more problems right and would have scored 80%. write the expression for how many problems in all she would have answered correctly

    asked by blakers
  54. english

    Here is my sentece outline for this thesis Native American Indian names, mascots and logos in all sports from elementary schools to professional teams can be offensive to some people not to others. Can you tell me if it is ok? I. Several organizations are

    asked by Anonymous
  55. math

    i just forgot how to find the equation in slope-intercept form for a line. Can anyone please give me some hints to do it with "the line through (3,-2) with slope m=4/5" as an example? Thanks a lot!

    asked by komi
  56. Math

    explain why the equation x^2 + y^2=1 does not define y as a function of x.

    asked by Anna
  57. Language Arts

    What is another name for a red Indian woman beginning with the letter S?

    asked by Antony
  58. accounting

    I have been hired into a new company to oversee the accounting department. What type of financial reports would I expect to see in the department? How will I use the financial reports available to me to make business decisions? This is what I have so far

    asked by Anonymous
  59. math

    The united states emitted 19.5 million of nitrogen oxides (NO) into the atmosphere in 1987. ONe metric ton (1) equals 1,000 kg. How many kilograms of no were emitted to the atmosphere in the united states during 1987?

    asked by Lulu
  60. 10th grade

    engineering foundations 2 calculations and converstions question. How do I round off the following numbers to three significant figures? Or can you give me an example of how to round off number 1. 4.65735 m 2. 55.578 s 3. 4555N 4. 2768 kg

    asked by carmen
  61. 10th grade

    How do I represent the following to 3 significany figures and express the answer in SI units using an appropriate prefix? or Can you give me an example? 45 320 kN

    asked by tonya
  62. ethnics

    impact of Orientalism on Muslim and Arab Americans?

    asked by kimmie
  63. math

    Complete each statement .(round to the nearest hundreth) 7L = _________ qt.

    asked by Karen
  64. world history

    How did the war in vietnam change American foreign policy?

    asked by Nathan
  65. Math

    list whole numbers 1-10 that are factors of 1260

    asked by Stacy
  66. writing

    tip for essay writing

    asked by mariaane
  67. Math

    How do I find the area of the region bounded by the curves y = e^x, y = e^-x, x= -2, and x = 1? Even if you could just help me in getting started it would be a HUGE help. Thanks!

    asked by Kara
  68. Research Writing

    Can someone help me please. How would one do a Annotated Bibliography?

    asked by Doris
  69. engineering

    convert 65 slug/ft^2 to appropriate SI units

    asked by ashley
  70. Criminology

    If criminal behavorial pattern in adolescents is not corrected, where might it lead as the adolescent reaches adulthood?

    asked by Mary
  71. engineering

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

    asked by ashley
  72. engineering

    wat is the SI form? a)Mg/mN B)MN/(kg*ms)

    asked by ashley
  73. Language Arts

    This is for writing an expository essay on why the wheel is so important. Ca someone help me and figure out 3 reasons why the wheel is so important?

    asked by Holly
  74. geometry

    im trying to explain to my brother how to do graph this problem put im not sure how to solve it either. (x-3)^2+(y+5)^2=9 so if someone can explain how to graph this it would be greatly appreciated

    asked by Adam
  75. 12th grade

    Given that x is an inetger, state the relation representing each equation by making a table of values. y=3x+5 and -4

    asked by Liz
  76. math

    Samatha's speedometer reads in kilometers per hour. if the legal speed limit is 55mi/h, how fast can she drive?

    asked by Peggie
  77. science

    will paraffin float on water?

    asked by Janell
  78. math

    I though 1 doesnt count for odd or am I thinking of another rule

    asked by carle
  79. Math

    hi, I am trying to find the domain and range, of this equation, in interval notation. y = 4/(x+3) , can you please help?

    asked by Levi
  80. math

    corrected ? TWO ODDS =ODD? OR 1 ODD+1EVEN=EVEN?

    asked by cam
  81. math

    Mark uses 1 pt 9 fl oz and then 2 pt 10 fl oz from a container of film developer that holds 3 qt . How much of the developer remains?

    asked by Veronica
  82. Algebra 1

    Who would be interest in a data in which the data is a recorded age (in months) of when infants first walked and Why? I need help, I am kind of stuck on this problem. Like just give an example and you don't have to explain why.

    asked by Joy
  83. Math

    what is the domain, range, and zeros of: f(x)=|x| and h(x)=|x|-2 ?? thank you!

    asked by Anna
  84. Biology

    Which organism is a third-order heterotroph? To what trophic level does that organism belong?

    asked by Becky
  85. science

    what are some sources of Chlorofluorocarbons, I know freon is one of them, but is there any more? What kind of health or environmental hazards do these cause?

    asked by Anonymous
  86. Language arts

    the capital letters in the sentence are either adverbs or prepositions am not sure which this one is 1)we looked ACROSS at the crowd on the opposite shore.

    asked by camiron
  87. Social studies

    I need to find on a map the north middle latitude and the south middle latitude

    asked by Dawn
  88. science

    Who inventerd the periodic table

    asked by lisa
  89. biology

    What is the name of the lens used to locate a specimen on a microscope?

    asked by Mary
  90. geology

    1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a. Base of

    asked by student01
  91. LA for Ms.sue

    i just wanted to let Ms.Sue know that the names keep changing from this computer because more than one person uses it and everytime they use a different name. sorry for the confusion.

    asked by mysterychicken
  92. Sci

    What are the 5 signs that show a chemical change has taken place? I wrote: - theres a smell of ordur - change in color - fizzing or bubbling - percipitate forms - difficult to reverse Could you name a couple more please and tell me if those are right.

    asked by Lena
  93. math

    write the value of each digit in the following numbers.e.g.403-4 hundred0 tens ones

    asked by jean
  94. english

    I am having a hard time finding a full-sentence outline for this can anyone help me? What would a full-sentence outline be for this thesis? Native American Indian names, mascots and logos in all sports from elementary schools to professional teams can be

    asked by Anonymous
  95. chemistry

    what's malleability

    asked by ashley
  96. english

    please help us unscramble sbsolapekpo

    asked by Jaci
  97. Math

    If the size of a population is N and the size of a sample of the same population is n, then the correct relationship between N and n is

    asked by Marilyn
  98. Word Problem

    Suppose a frequency table consists of six categories. If all six categories contain the same number of observations, the interior angles of each section of the associated pie chart would be

    asked by Marilyn
  99. 9th grade

    explain how each value in the addition table changes when you move up 5 rows and left 3 columns

    asked by rozi
  100. 12th grade

    Why is it difficult to recognize the worth and dignity of all individuals at all times?

    asked by chris
  101. Math

    I know a ratio compares two numbers. However, my niece came home with this homework question and I'm not sure what the answer would be. Complete the ratio scale 1 then a box is drawn 6 another box is drawn 4 16 then a box is drawn 8. Please Help Thanks

    asked by Shirley
  102. equations

    does it make a diffrence what two points you chooose on a stragight line to find the slope of the line

    asked by isaiah
  103. math

    what is a slope

    asked by isaiah
  104. 7th grade english

    Ok i got a work sheet and i have to compare an articale that was writen by billy shore on sept.1,2006 and the IB learner profile. what are some similarites

    asked by Marussa
  105. spanish

    wat does la tu ya means

    asked by kiki
  106. Math

    18/6+3 if there is a remander after the division (/) what do i do ?

    asked by Stephenie
  107. exponets

    42-13+(12x2)=

    asked by bonbon
  108. math

    place the set in ascending order; 3/7, -6/7,1/7,-1/2.2/7

    asked by annonoumus
  109. math

    add. 1/3+ (-5/6)+(-1/2)

    asked by annonoumus
  110. math

    4x9/6-3 i know that after the division part there is going to be a remainder so how do i work the remainder into my BEDMAS ?

    asked by Stephenie
  111. Ethnics

    If I am writing an autobiography on my town, how do I properly list a body with supporting evidence and in-text citations and have references with three sources? Do I ask people around town, and if so how do I do this in APA format??I am not sure how I can

    asked by suzi
  112. Math

    Estimate the amount in each of the folloing problems. What is 48.3% of 1,500?

    asked by Brenda
  113. math

    0.4(square root symbol)29.6 i have absolutly no idea how to do this, plz help me

    asked by lily
  114. Diversity

    The racial makeups of the village are 97.95% White, and 2.05% from two or more races. Hispanic or Latino of any race are 0.21% of the population (FB 2005). Fredericksburg sits directly in the middle of the largest Amish settlement in the world, which

    asked by suzi
  115. math

    exponential notation?

    asked by Anonymous
  116. French

    How would you say, "I went to a family reunion" in French? Would it be "Je suis allee a la reunion de ma famille"? (accents are missing) Thanks

    asked by Anonymous
  117. history

    are there any popular Us history debates that i could write my thesis statement on?

    asked by kayla
  118. health

    what is the definition of social and physical health?

    asked by anne
  119. math

    Mark use 1pt. 9fl. oz. them 2pt. 10 fl oz from a container of film developer that hold 3qt. How much of the developer remains?

    asked by Brenda
  120. math

    3(a/7)+7(a/3)

    asked by alex
  121. Math

    My number is a multiple of 4 and is a square number less than 50

    asked by Savanah
  122. music

    How has other culture's use of their music in American helped them to keep their identity.

    asked by luly
  123. math

    How can a number be used to name something?

    asked by royal14
  124. music

    How has other culture's use of their music in American helped them to keep their identity.

    asked by luly
  125. math

    Please check this problem to see if I answer correctly x - 3 > 8 Answer x > 11

    asked by jay jay
  126. math

    problem -2 x + 7 < 10 Answer x > -3/2

    asked by jay jay
  127. math

    Please check problem 3y - 2 > 12 - 5 y answer y > 7/4

    asked by jay jay
  128. FRENCH REPOST

    How would you say, "I went to a family reunion" in French? Would it be "Je suis allee a la reunion de ma famille"? (accents are missing) Thanks

    asked by Anonymous
  129. math

    can someone please describe the properties and characteristics of fractions without numbers. Thanks!

    asked by tommy
  130. Math

    Walter has a vegetable garden in the shape of a regular pentagon.How much fencing will he need to enclose his garden if one of its sides measure 4.06 meters?

    asked by Kiana
  131. Math

    Write an inequality and provide a value that may or may not be a solution to the inequality.

    asked by jay jay
  132. Math

    5x^2 + 26x + 5 Besides guessing and checking, is there any other way or "trick" (preferably not time-consuming) to factor polynomials whose leading coefficient is NOT 1? Thanks much!

    asked by Nikki
  133. Math- Algebra 1

    A gym is 21 years newer than the auditorium. The gym is also one fourth as old as the auditorium. How old is each building? Choices for auditoriums age:26, 27, 28

    asked by Job
  134. math

    *if it is in parentheses, it is subscripted. the sequence {a(n)} is defined recursively by a(1) = 1, a(2) = 1 and for all n>= 1, a(n+2) = a(n+1) + a(n). use the principle of mathematical induction to prove that a(1) + a(2) + a(3) + ... + a(n) = a(n+2) - 1

    asked by zgord
  135. 4th math

    i am 900 more than the greatest possible 4 digit even number that can be mad using the digits 1,4,2,5. what number am I?

    asked by kathya
  136. high school

    Is there a formula or general for finding the number of segments that can be named by a given number of points on a line?

    asked by Maria
  137. english language arts

    can prepositions come at the end of the sentence

    asked by alejandro
  138. gometry

    multiple choice always,never,sometimes Intersecting lines are _____coplanar?

    asked by jasmyn
  139. history

    who discovered america?

    asked by jordan
  140. geometry

    which three points are not collinear A(0,0)(0,2)(0,4) B(0,0)(3,0)(5,0) C(0,0)(0,2)(3,0) D(2,-2)(2,2)(2,3)

    asked by jasmyn
  141. accounting

    I have been hired into a new company to oversee the accounting department. What type of financial reports would I expect to see in the department? How will I use the financial reports available to me to make business decisions?

    asked by Anonymous
  142. Science 4th grade

    where do the seeds of a fruit-bearing plant form? pollen cell.

    asked by LaNoria
  143. English (Grammar)

    In the following sentence would I use a colon, semi-colon, comma, or nothing after the word or? (the area in question is marked with *) Is it the bones and skin that keep us standing upright*:;,?* or is it something bigger than that, something other than

    asked by My
  144. Physics

    n apple and feather free fall in a evacuated chamber. The apple and feather are released from the top. Suppose the camera opened flash every 1 s. (1)Suppose A1 is the distance from t = 0s to t = 1 s, A2 is the distance from t = 1s to t =2s, A3 is the

    asked by Jeff
  145. college

    i need to graph this equation (x-3)^2+(y+5)^2=9 this has me totally confused.

    asked by Adam
  146. calculus

    Find an equation oif the line that contains the two points. Write the equation in the general form Ax+By+C=0. (-5,4)and(2,-5) Can anyone please teach me how to do this??? I got no idea with writing the equation in the general form.

    asked by Kumiko
  147. geology

    1. What fraction of the Earth is made up of each of the major compositional layers: core, mantle, and crust? 2. What cities lie the same distance from our town as the boundaries of the following layers in the Earth lie from the solid surface? a.Base of

    asked by student01
  148. Science 4th grade

    What is the green pigment that plants use to make food? fungi

    asked by LaNoria
  149. math

    what is the base number for 729, 625 as expressed as a power?

    asked by danielle
  150. math

    Can 2 odd numbers add to an even or 1 odd and 1 even to an even?

    asked by cam
  151. english language arts

    Ms.Sue is this right? 1)The puppy came (to our tent) and slept (at the foot) (of my sleeping bag). 2)A skywriter flew (over the field) (during the game). 3)The city was (without power) (for several hours) 4)The cross-country team ran down the avenue and

    asked by George
  152. Biology

    Why does it make a difference if you measure metabolic rate in terms of O2/animal or O2/g?

    asked by Jenna
  153. math

    The united states emitted 19.5 million of nitrog3en oxides (NO) into the atmosphere in 1987. One metric ton (1) equals 1,000 kg. How many kilograms of No were emitted to the atmosphere in the United States during 1987?

    asked by Peggie
  154. math

    complete each statement. (round to the nearest hundreth) 72in = -------- cm 7L = ---------- qt

    asked by Peggie
  155. science

    Can you please tell me why the German Philosopher Nietzche went mad with closed universe theory.

    asked by Julia