# Questions Asked onSeptember 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+^ +

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

3. ## 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!

4. ## 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!

5. ## 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

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

7. ## science

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

8. ## chem

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

9. ## mentor high

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

10. ## 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

11. ## 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?

12. ## Math

what is the longest multiplication combination for 120

13. ## math

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

14. ## science

will paraffin float on water?

15. ## math

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

16. ## math

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

17. ## 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?

18. ## english language arts

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

19. ## math

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

20. ## 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?

21. ## 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.

22. ## 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.

23. ## Math

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

24. ## Math

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

25. ## Biology

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

26. ## 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?

27. ## Math

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

28. ## 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.

29. ## Math

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

30. ## 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.

31. ## Social studies

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

32. ## science

Who inventerd the periodic table

33. ## math

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

34. ## biology

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

35. ## 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

36. ## 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.

37. ## science

what are some sources of carbon dioxide?

38. ## 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.

39. ## Math

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

40. ## 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

41. ## math

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

42. ## 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

43. ## chemistry

what's malleability

44. ## math

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

Explain the diferent between expositorty nonfiction and narrative nonfiction?

47. ## 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

48. ## 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

49. ## 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

50. ## 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

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

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

53. ## 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

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

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!

56. ## History

What should never be compromised?

57. ## 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?

58. ## equations

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

59. ## math

what is a slope

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

61. ## Math

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

62. ## spanish

wat does la tu ya means

63. ## Math

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

64. ## exponets

42-13+(12x2)=

65. ## math

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

67. ## 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 ?

68. ## 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

69. ## Math

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

70. ## Language Arts

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

71. ## math, algebra

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

72. ## 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

73. ## math

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

74. ## 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

75. ## speech

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

76. ## math

exponential notation?

77. ## 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.

78. ## 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

79. ## history

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

80. ## health

what is the definition of social and physical health?

81. ## 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?

82. ## literature

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

83. ## math

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

84. ## Math

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

85. ## music

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

86. ## math

How can a number be used to name something?

87. ## music

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

88. ## math

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

89. ## math

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

90. ## math

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

91. ## 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

92. ## 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

93. ## math

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

94. ## 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?

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

96. ## 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.

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

98. ## 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?

99. ## Math

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

100. ## 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!

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

102. ## math

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

103. ## math !!!

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

104. ## 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?

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

106. ## 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

107. ## 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

108. ## 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?

109. ## 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?

110. ## ethnics

impact of Orientalism on Muslim and Arab Americans?

111. ## math

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

112. ## world history

How did the war in vietnam change American foreign policy?

113. ## Math

list whole numbers 1-10 that are factors of 1260

114. ## writing

tip for essay writing

115. ## 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

wht is the 8 parts of speech

117. ## 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!

118. ## 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

119. ## 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) =

120. ## english language arts

can prepositions come at the end of the sentence

121. ## geometry

how many planes contain the same collinear points?

122. ## artist

what are the elements

123. ## gometry

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

124. ## geometry

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

125. ## Research Writing

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

126. ## history

who discovered america?

127. ## 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~

128. ## 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

129. ## engineering

convert 65 slug/ft^2 to appropriate SI units

130. ## 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)

131. ## Math

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

132. ## 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

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

135. ## engineering

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

136. ## 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

137. ## engineering

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

138. ## 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?

139. ## 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

140. ## college

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

141. ## 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

142. ## 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.

143. ## 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

144. ## 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

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

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

147. ## math

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

148. ## math

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

149. ## 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

150. ## Biology

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

151. ## 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?

152. ## 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?

153. ## 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?