1. Chemistry 2

A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according following equations: 2KCLO3 -> 2KCL + O2 2KHCO3 -> K2O + H2O + 2CO2 2CO3 -> K2O + CO2 The KCL does not reacnder the conditions of the reaction.

2. Trig

Use the half angle formula to find the exact value of tan 7 pie/8

3. Chemistry

I have worked this problem out a number of ways, but every answer I come up with is incorrect. I have posted my last answers underneath the question. Please advise. (a) What is the mass percentage of iodine (I2) in a solution containing 0.060 mol I2 in 105

4. Calculus

We're learning about different kinds of functions and I don't really understand the difference between rational and algebraic functions. I know that rational functions are functions that are a ratio of two polynomials, and algebraic functions are any

5. Chem 2

A mixture containing KCLO3, K2CO3, KHCO3, and KCL was heated, producing CO2, O2, and H2O (water) gases according to the following equations: 2KCLO3 -> 2KCL + O2 2KHCO3 -> K2O + H2O + 2CO2 K2CO3 -> K2O + CO2 The KCL does not reacnder the conditions of the

6. Physics

Calculate the resultant of the pair of velocities 100km/h north and 75 km/h south. Calculate the resultant if both of the velocities are directed north. How do you do that

An apple orchard has an average yield of 38 bushels of apples/tree if the density is 24 trees/acre. For each unit increase in tree density, the yield decreases by 2 bushels. Letting x denote the number of trees beyond 24/acre, find a function in x that

8. World History

The boundary line between North and South Korea was set at: a. the 17th parallel. b. the Yalu River. c. the 38th parallel. d. the city of Seoul.

10. finance management

Explain how efficient inventory management affects the liquidity and profitability of the firm.

11. Physics 1

A hot-air balloonist, rising vertically with a constant velocity of magnitude v = 5.00 m/s, releases a sandbag at an instant when the balloon is a height h = 40.0 m above the ground. After it is released, the sandbag is in free fall. For the questions that

12. Calc 3

A wrench .9m long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of (0,1,3) at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 J of torque to the bolt. This is the

13. Physics 1

A subway train starts from rest at a station and accelerates at a rate of 1.60m/s^2 for 14.0 s. It runs at constant speed for 70.0 s and slows down at a rate of 3.50m/s^2 until it stops at the next station. What is the total distance covered?

14. Psychology

I am doing a project where I have to illustrate the collective unconscious of my culture. The question is what symbols and archetypes are in your culture. I am using the archetypes the mother, and the hero. My problem is I don't know how this collective

15. Physics

Calculate the Magnitude of the resultant of a pair of 100-km/h velocity vectors that are at right angles to each other.

16. Physics

A hot-air balloonist, rising vertically with a constant velocity of magnitude v = 5.00 m/s, releases a sandbag at an instant when the balloon is a height h = 40.0 m above the ground. After it is released, the sandbag is in free fall. For the questions that

17. U.S. History

what did secretary of state John Hay call for in the Open Door Policy

18. math

Jacob walked three blocks to pings house, then five blocks to jamals house. Write a sentence to show that the distance from pings to jamals is the same as the return walk home. Name the property illustrated in your sentence.

19. Physics

A freight train traveling with a velocity of -4.0 m/s begins backing into a train yard. If the train's average acceleration is -0.27 m/s/s, what is the train's velocity after 17 seconds? Can someone tell me which formula to use for this?

20. organic chemistry

I need to draw the structure of 4-Hexenal. I understand that "hex" means it is a 6 carbon chain and the 4 tells me the aldehyde group ("al")is off the 4th carbon. My problem is how to draw the parent chain. I tried it with 6 carbons in a straight line then

21. chemistry

NH4NO3 --> N2O + 2H2O you start with 1000g of ammonium nitrate, what is the theoretical yield of laughing gas? How many grams of water will be produced. *I know you COULD have 450.234g of H20, but I'm not sure how to do the theoretical yield.

22. chemistry

How many ml of a .25M HCL would be required to neutralize completely 2.5g of NaOH

23. Trigonometry

find the exact value of: tan 7pie/12

24. Physics

A bicyclist accelerates -0.87 m/s/s during a 3.8 s interval. What is the change in velocity of the bicyclist and the bicycle? For this problem, I used the formula 'change in v = a x t" and came up with -3.306 m/s as my answer. Is this right?

25. Science

How do you convert quarts into liters? i'm so confused.

26. Physics

If a vector that is 1 cm long represents a velocity of 10 km/h, what velocity does a vectory 2 cm long drawn to the same scale represent?

27. math - fractions

Hello, I need help for my 5th grader...Solve the problem by working backward. Write the ans. in a compl. sentence. Mara followed a recipe she found on the net to make her own perfume. She started by adding jojoba oil to a small bottle. Then she added 2

28. Chemistry

If the density of mercury is 13.6 g/ml, what is the mass of 3.0 liters of mercury in: Grams? Pounds?

29. Algebra

Find the domain of the function g(x)= 3x/x^2 -49 I try to figure it out it, and since x^2-7 is a perfect square (x+7)(x-7), I thought x couldn't be +-7?

30. ap chem

A certain volume of a .50 M solution contains 4.5g of a certain salt. What mass of the salt is present in the same volume of a 2.5 M solution? Indicate the concentration of each ion/molecule: A mixture of 50.0 mL of .2M KClO3 and 25.0 mL of a .20M Na2SO4.

31. riddle

what comes before god poor people needs it rich people don't and if you eat it you will die

32. Math

Ten people can paint 60 houses in 120 days, so five people can paint 30 houses in:

33. To "bad@math" (and other names)

Please post under one name. Please do not post to demand that someone go back and answer your previous questions. A math volunteer will get to them when he/she can. Thanks.

34. Chemistry

Questions about ionic radius... Why do the noble gas elements not have ionic radii? Why do boron, carbon and silicon not have ionic radii? What observations can be made regarding the ionic size for the transition elements along each period. Thanks for your

36. World History

The most serious confrontation between the United States and the Soviet Union during the Cold War involved the: a. Bay of pigs invasion. b. Falklands/Malvinas War. c. Cuban Missile Crisis. d. invasion of Grenada.

37. math

Next 3 in pattern 2/19, 27/76, 46/76, 65/76

38. math?

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know how to solve for the answer, i just don't know the

39. physics

Im having severe trouble understanding the concept of Dimensions. And with 300 other students in my physics class the Professor doens't have alot of time for individual students.... The volume of a liquid flowing per second is called the volume flow rate Q

40. Math

I am tring to finish my 10th grade. I got hurt last Jan. 2007. And was force to quit public school. In short of every. I started online schooling and I have to write an essay for a final grade in Math compare three college to each other and make a graph

41. Preschool/Storytelling

Would you please look over my answers to these questions and see if you agree that I have chosen the best answer. If my answers are wrong-please let me know. 1. When storytelling,memorization is: A. a good idea for phrases or sections that are repeated in

42. English

I asked this question a couple of days days ago and noone was really sure. "Let me in," Said the pin. Which is this an example of: 1. assonance 2. a metaphor 3. alliteration 4. personification I know it's either assonance or alliteration.

43. the word environmental science

can Someone put environmental science in a sentence. like bob studyied environmental science. but i don't know what it means to well soihave to be spacific. can u help me?

44. Science

Can you recommend some good website to use for this project? I get computer stumped sometimes. I have read where people want you to do the project, I’m not, I just need your help to recommend some good website to gather this information.

45. physics

what kind of errors of the procedural, systematic, and random errors could possibly occur while finding the mass of a burning candle by placing a candle on an electronic scale and lighting it?

46. Algebra-One to one function

Could you please check my answers and help me with one of them? Find the inverse of the one to one function 1. f(x)-4x+7 -I got f^-1(x)=x-7/(-4) 2. f(x)= square root of x-8 -I got f^-1(x)=x^2-8 3. f(x)=4/(5x-1) This one I don't understand how to find the

47. Science

Why do most plants flower later in Scotland than they do in the south of England?

48. Econ/Math Derivatives

Find the derivative of the quotients: y=4X/(X-3)

49. lab procedures

After reconstitution with 1.5 ml diluent, a 500 mg vial of ceftazidime injection yeilds an approximate volume of 1.8 ml.Each ml contains approximately 280 mg.If 500 mg IM are ordered, how many ml should be administered?

50. Algebra 1

question One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.

51. Science

why do you think Scottish hares grow a white coat in winter why hares in the south of England don¡¦t do the same.

52. INB

1.Why is an exporter that is to be paid in six months in a foreign currency worried about fluctuating foreign exchange rates? 2.Are there ways in which this exporter can protect itself? If so, what are they? 3.How does the credit or money market hedge

53. World History

Short answer describing the cold war, including examples that show how the war influenced events in the postwar perioc.

54. Math

Okay .. did you see my last answer? I think it is 5 But now I have another one and I think I know the answer but there is a trick question at the end. Maybe you can tell me if it is a trick or if it something I am missing. A golf classic starts with 64

55. Algebra

Could you please check my answers and help me with one? Find the domain of the function. f(x)=-8x-2 -I got the domain being (negative infinity, postive infinity). g(x)= 3x/x^2 -49 (This one I don't understand how to find the domain)

56. inb

Developed country partners in countertrade contracts have had problems with quality and timely delivery of goods from the developing country partners. How are they trying to deal with those problems?

57. Preschool

Hi,I need help on a couple of questions. Please give your opinion on each question and let me know if you feel my answers are wrong. (Thanks) 1. Using an attache case for a flannel board is not a good idea when: A. you are presenting to only one child. B.

58. science

Is the gulf stream an open or closed system?

59. Chemistry

I have tried to solve this problem, but I keep getting it wrong. Please advise on this question.My answer will be listed under the problem. An ore contains 2.79 g of silver per ton of ore. What is the concentration of silver in ppm? My Answer: 0014164.8

60. chem

---------- A compound has the formula Mg3X2. If 1.87 g of X combines with 4.86 g of magnesium, what is the atomic weight of X? A) 7.0 B) 14.0 C) 21.0 D) 28.0 E) 32.0 ---------- I'm having a really rough time with this one. It seems the total weight is 6.73

61. Biology

Why would the population of mountain lions increase in the past 10 years even though humans were expanding into the mountain lion's habitat?

62. Preschool/child dictation

Can you help me with this? Jason was dictating a story about his pet hamster to his teacher. He said,"He climb to the top of his cage and jump down. He be fast." The teacher should: A. write,"He climb to the top of his cage and jump down. He be fast." B.

63. LAB PROCEDURES

GENTAMICIN SULFATE INJECTION IS PRESCRIBED "IM" IN THREE EQUALLY DIVIDED DOSES,DOSAGE BASED ON THE FORMULATION 3mg/kg/day.How many ML should be administered per dose to a 110-lb patient if a vial contains 40mg/ml ?

64. science

how old is the sun and the planets? how did the solar system form? what is a good website i can get this information from?

65. World History

Portugal's military coup of d'etat of 1974 gave the country of Mozambique its independence. ( True or False )

66. science

Im doing a science fair project on how fertilizer and sun effect the growth of grass

67. Discrete Mathematics

I am having trouble using modus ponens and all the rules of inherence. By any chance do you guys have a link that can explain these concepts in more detail. I've tried multiple books and links...and haven't found a good website that shows this types of

68. ALGEBRA

Evaluate the expressions: 1. -8x when x=6 2. 3xsquared-5x when x=-2 3. -4((the absolute value sign) y-12 (the absolute value sign))when y=5

69. Art History

I am having difficulty finding information on Chinese art that was controlled by the government. Any suggestions?

70. english

I need a title for a narrative about my fear of snakes and the time one got loose in our classroom. Any witty ideas?

71. Science

Y does a england hare not grow white fur?

72. College Algebra

Factor over the reals completely 32a^4b-18b^3

73. science

to be considered ______, something must exhibit all of the _________ of life.

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know how to solve for the answer, i just don't know the

75. I think you didnt see my question ^^ help please!

Hi!!! I didn't understand these problem, so I was wondering if you could explain how to do them for me. I was going to ask the teacher but she had already left the campus. Thank You!! Questions: When an increase in the value of one variable quantity

76. Algebra 1

Solve variable in terms of the remaining variables A = P(l + rt) for r

77. science

I'm forgetting, have scientists attained a means of fussion or fission as of yet.

78. S.S

I have a quiz tommorow and I need help finding away I can remember the top ten mager wars we have had in order that they happened. Please help me. I have tried but it gose in one ear and out the other. Thank You

J. K. Rowling A Biography (Hardcover) by Sean Smith (Author) Can I find this at any book store, such as F.Y.I.,etc, what about Target or WalMart?

80. math

How do you solve equations with variables on both sides?

81. biochemistry

why does the hydrolysis of peptide bonds work best in the conditions: (Acid) M HCL @ 110-120 C 12-48 hours. Than the conditions: (Base) 2-6 M Naoh @ 100 C ~24 hours?

82. Math

Write a mathematical sentence to describe each problem situation. 1. The Length of a ruler is at least 12 inches. 2. Tomas is at most 14 years old. Please help because I do not know how to do this! Thank you so much.

83. math algebra

20(1/5n-3/4)+9n in need of the simplified answer i came up with the same as you but it is not one of my possable multiple answers thanx

84. Algebra 1

Solve the system by addition. 5x-3y=13 4x-3y=11

85. Can someone tell me what this sentence means?

Television has created a global village, consequently, stereotypes are disappearing.

86. science

what is the difference between water on the surfaace of crystals and hydrate water itself?

87. Language

I wnat to see if I got this right, the first one is what it looked like before I made changes. There should be 5 changes. What fun the zoo is. we love it. I feed the elephants but their trunks tickle me. I buy zoo food other food may make them sick. What

88. inb-help

1.Why is an exporter that is to be paid in six months in a foreign currency worried about fluctuating foreign exchange rates? 2.Are there ways in which this exporter can protect itself? If so, what are they? 3.How does the credit or money market hedge

89. inb

1.How would you accomplish exposure netting with currencies to two countries that tend to go up and down together in value? 2.Some argue that translation gains or losses are not important so long as they have not been realized and are only accounting

90. Math

Ha! Mom said if I could find help online to go for it so here I am asking for your help. Here is one problem she gave me from a page called Superstars. Mr. Jackson is preparing bags of treats to give trick or treaters. He has 48 pieces of candy and 60

91. Algebra

Hi!!! I didn't understand these problem, so I was wondering if you could explain how to do them for me. I was going to ask the teacher but she had already left the campus. Thank You!! Questions: When an increase in the value of one variable quantity

92. Math

Let f and g be two odd functions. Prove that: a) f + g is an odd function b) g of f is an odd function I am not even sure where to start, any help that can be provided would be appreciated!

93. Science

What are examples of insolubles?

94. Vectors

Find the distance from P(2,5,5) to the line x=0,y=5+5t,z=5+t Can anybody help me with this problem. I know the formula: d=QPxQR / |QR| Not sure how to get point Q and R tho.

95. Can someone answer this question?

Does a England hare hibernate?

96. are there any other free hw help sights?

are there any other free hw help sights?

97. french

What does the phrase "je suis aller" mean?

asked by he who must not be named
98. Chemistry

you used 10 pennies to find the average atomic mass.... why did you do this, why not just find the mass of one penny?

99. Repost Math for Steve Dowling

Math - steve dowling, Thursday, September 13, 2007 at 8:44pm what is -5/18 (8/15)= Can you show the work Thanks

100. Geometry

I need to solve the following: "write a mathematical sentence to compare each pair of measure 1 GB and GF 2 FJ and JC 3 AC and AD" Please help

1.How would you accomplish exposure netting with currencies to two countries that tend to go up and down together in value? 2.Developed country partners in countertrade contracts have had problems with quality and timely delivery of goods from the

Do Tariffs help us to maintain a favorable balance of trade and balance of payments?

103. World History

short essay decribing the economic, political,social, and cultural problems, faced by the new nations of Africa.

104. math.chem

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know the answer is 0.0306, but how many sigfigs should the

105. Physical Education

How do you define the phrase "expontial results"?

106. Spanish

We're supposed to translate the following sentence into spanish: It smashed cars and destroyed buildings. The verb our book told us to use for "smashed" is "hacer pedazos." Would you say "Hizo pedazos los coches..." or "Hizo pedazos de los coches..." or

107. Math

Find the derivative of the quotients: y=4X/(X-3) --What would (x-3) be?

108. biology

Whats the width of the north american tectonic plate?

109. com215

need to know what this assingment means; find an ethnic group to you personally and write about it. Does he want us to find our ethnic group or what?

110. math algebra

20(1/5n-3/4)+9n if n = 4

111. math algebra

20(1/5n-3/4)+9n in need of the simplified answer i came up with the same as you but it is not one of my possable multiple answers

112. World History

Ghana was the first SubSaharan nation to win independence after 1945. ( True or False )

113. Math

Name the difference between these #'s: 3 6 9 35

114. social studies

what are the 5 layers of the earth and are they liquid or solid?

115. inb

1.How and why would a seller make a sale to a buyer that has no money the seller can use? In the event that the seller does not need the money, the seller will gain by holding PAPER. In this event I sell you the house, you pay the closing costs and sign

116. Science

I have to develop a plan to assist a developing country with its food and water supply. The country can be either Central Africa or Rwanda Can you recommend some good website to use for this project?

117. Linear Equation

I posted a question below but forgot to put in the equation! So sorry. The problem states: Find 2 numbers that satisfy the equation then graph it. The equation is 2y+2=0 I think one of the numbers is -1, but what could the other be or am I doing the

118. Math

Where can I find a online calculator online?

119. History

If an interview is being read...who is the speaker of the story..the interviewer or the person answering the questions in the article?

120. Math

Here's the direction I was given: Write an expression for the sequence in each table. 1 - 8 2 - 13 3 - 18 4 - 23 5 - 28 n - ___ Would I write n = 28+5 ?

121. english 3

what attitude does everyine have

122. Lincoln School

what is a polygon?

123. social studies

What are some of the forces that change earth's surface

124. Antomy

The nucleus of the cell is the site or RNA synthesis, largest organelle in eukaryotes, and has a double membrane. True or false

125. Math

I have a problem in graphing that says: Find 2 numbers that satisfy this equation, then graph. The graphing I can do but am having trouble finding 2 numbers. I thiink that one of the numbers is -1. What could the other one be? Thanks so much in advance!

126. Algebra-Functions

Could you please check my answers and help me with two problems? Determine which two functions are invereses of each other. 1. f(x)=5x, g(x)x/5, h(x)5/x -I got that f(x) and g(x) are invereses of each other 2. f(x)=x-2/(2), g(x)=2x-2, h(x)=x+2/(2) -I got

127. ALGEBRA(sorry I forgot this one)

4. -2xsquared+3x-7 when x=4

128. history again..

were learning abo0ut the industrial revolution and i was wonder what this meant... "what is your business?".answer:"I follow the clothes- dressing at present"

129. World History

Biafra tried to secede from Turkey. ( True or False )

130. College Algebra

3x^-2+3/2x^2

What ethical issues might arise by relying more and more on technology in Health Care or Human Service?

132. also...

is this book authorized?