# Questions Asked onJanuary 23, 2010

1. ## College chemistry

Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. A 250 mL sealed flask contains 0.5 g of butane at -22 C. How much butane is present as a liquid? If the butane is warmed to 25 C, how much is present as a

2. ## Chemistry

Given these chemical reactions: Ca^(2+)(aq) + 2IO3^(-)(aq) → Ca(IO3)2(s) Ca(NO3)2·4H2O(s) → Ca^(2+)(aq) + 2NO3^(-)(aq) + 4H2O(l) KIO3(s) → K^(+)(aq) + IO3(-)(aq) Calculate the masses of Ca(NO3)2·4H2O(s) and KIO3(s) required to make 10 g of

3. ## k-teacher

Assume the role of a Radical Republican Senator and argue the Radical Republican position of Reconstruction. For the Radical Republicans:  What were the challenges of Reconstruction?  What caused the failure of Reconstruction? o Assume the role of a

4. ## Math Probability question

A jar contains four marbles, each a different color: red, blue, green and yellow. If you draw two marbles from the jar, one after another, replacing the first before drawing the second, what is the probability of getting a. two red marbles b. a red marble

5. ## physics

Two 0.09 pith balls are suspended from the same point by threads 40 long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 apart. What is the magnitude

6. ## math

find the general term (un), of the geometric sequence which has : u7=24 and u15= 384 thank u

7. ## physics

A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

8. ## math

according to some student,what is the true purpose homework

9. ## physics

For a ballistics study a 1.9 gram bullet is fired into soft wood at 380 meters/sec and penetrates 15 cm. a.) find the retarding force (resistance) in N. b.) the time needed to stop the bullet in sec. c. acceleration of the bullet in meters/sec.

10. ## algebra

graph the system of inequalities y>_ -2 y

11. ## Physics

You and your friends are organizing a trip to Europe. Your plan is to rent a car and drive through the major European capitals. By consulting a map you estimate that you will cover a total distance of 5000 \rm km. Consider the euro-dollar exchange rate

12. ## English Language

Essay on "My Worst Holiday" about 450 words.

13. ## physics

If your initial speed was 19 , and you were heading due west, what was your average velocity during braking? Assume constant deceleration

14. ## trig

Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.

15. ## English!

To correctly quote from a source the information must be enclosed in quotations marks and include a reference to the source in parentheses, for example, "Poor diet and lack of exercise are known contributors to the epidemic of type 2 diabetes spreading

16. ## physics

Two 0.09 pith balls are suspended from the same point by threads 40 long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 cm apart What is the magnitude

17. ## physics

Two charges q = 3.0ì C are fixed in space a distance d = 4.5 cm apart. With V = 0 at infinity, What is the potential energy U of the three-charge configuration when the third charge is in place?

18. ## English

Can you help me check this paragraph? 1) An afternoon we were at my friend Paul’s house to do our homework. We usually do homework together, and we were surfing the net because we had to find information for a school research. 2) On the table there was a

19. ## math

1285 hrs to manufacture first unit - expects to achieve a 92% unit learning curve - how many hours would be required to manufacture units 51-100

20. ## Physics

A plumb bob does not hang exactly along a line directed to the center of the Earth's rotation. How much does the plumb bob deviate from a radial line at 38.5° north latitude? I got my answer to be 0.122288439 deg but it was incorrect. I used theta= a(sin

21. ## science (biplogy)

what in the digestive system assimilates dissolved food?

22. ## physics

An equilateral triangle has sides of 0.14 m. Charges of -9.2, +8.0, and +1.5 µC are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 1.5-µC charge.

23. ## Science

1. A girl on a playground swing makes a complete to-and-fro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2. (1 second) 3. (2 seconds)

24. ## Trigonometry

Rapunzel is located in the highest room f a tower, and Prince Charming has come to save her is 100 m away from the base of the tower. If the Prince estimates that he is looking at Rapunzel's room at an exact 45 degree angle of elevation. How long must

25. ## stratergies to success

What are the steps to formatting a paper in APA Style?

26. ## English!!!

Copying and pasting information from the Internet is ok because it's in the public domain. True OR false?

27. ## History

I am having some problems listing some difference and similarities in the early north and south colonies. These similarities are political, social and economic. Any ideas? I've looked everywhere with no clue as to where to start. Thanks!

28. ## HCA 240

I need to know if my diagnoses of the following symptoms are correct for the I start my research: The 4-year-old Caucasian female, has been complaining of being tired all the time. She is pale and a picky eater. Her mother is a single mom with a small

62. ## HCA 240

I need to know if my diagnoses of the following symptoms are correct for the I start my research: Past several weeks that he is having more bruises, or ecchymosis, all over his body. After coughing this morning, he noticed tiny red marks all around his

63. ## Literature

I had to write a narrative that could be about anything, so I chose to write about a 13 year old boy named Jacob who has to move from his home of South Carolina to New Jersey. Is this all right? The wind blew against my face, bringing the smell of leaves

64. ## geography

What are 3 categories of econmic and social growth?

Stories can mean different things to different readers. State a meaning you find in “The Pedestrian,” and then discuss how the story’s setting is relevant to that meaning. This is my question, I am confused as to what they mean by meaning. Could

66. ## Disorders

I need to know if my diagnoses of the following symptoms are correct before I start my research: The 5-year-old African-American male is visiting his new pediatrician for a kindergarten physical and his mom tells the nurse that she carries the ¯Sickle

67. ## Disorders

I need to know if my diagnoses of the following symptoms are correct before I start my research: The 4-year-old Caucasian female, has been complaining of being tired all the time. She is pale and a picky eater. Her mother is a single mom with a small

68. ## Disorders

I need to know if my diagnoses of the following symptoms are correct before I start my research: Past several weeks that he is having more bruises, or ecchymosis, all over his body. After coughing this morning, he noticed tiny red marks all around his

69. ## math

Make a frequency table using 11,2,0,13,5,7,1,8,12,11,7,8,9,10,7,4,6,10,4,7,8,6,7,10,7,4,6,10,4,7,8,6,7,10,7,3,11,18,2,9,7,3,8,7,3,13,9,8,7,7,10,4,15,3,5,6,7,10,6

70. ## biology

Why does a plant cell transports water against the force of gravity contain many more mitochondria than other plant cells?

71. ## computer science

explain six services provided by networks

72. ## math

Given f(x)=2-3x and g(x)=hx+k where h and k are constants.If gf(-1)=6 and g^-1(4)=g(4),find the possible values of h and k?

73. ## Health Physics

The body can release 20,000 J of energy for each liter of oxygen consumed. How much oxygen must be consumed by the body to release the energy present in a typical 2000 Cal diet?

74. ## Geometry

If two sides of a triangle are 12 cm and 20 cm, the third side must be larger than ________ cm and smaller than ________ cm. Fill in the blank and explain, please and thank you!

1)An increase in temperature ____________ the kinetic energy and average speed of the gas particles. A. decreases B. increases 2)As a result, the pressure on the walls of the container __________. A. decreases B. increases C. is not affected 1) i think its

76. ## English

Can you help me check this paragraph? Thanks 1) When I was a child, I went to the seaside with my family and some of my parents’ friends. One day it was very hot so I decided to go into the water with my friends and our small inflatable mattress. 2)We

77. ## NORCROSS

Two positive point charges are held in place, 0.80 m apart. They are then moved so that their electric potential energy doubles. What is the new separation between the charges?

78. ## PHYSICS

1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sun’s radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun

79. ## Stats

Studies show that 38% of all women suffer from hip fractures caused by osteoporosis by age 85. If 6 women aged 85 are randomly selected, what is the probability that A) None will suffer or has suffered a hip fracture P(x = 0) B) At least 4 have suffered a

80. ## Trig.

John is an Atlanta Hawks fan with seaon tickets for the past 5 years.John estimates that his seat is about 50 ft higher than the basketball court and he has calculated that he looks onto the court at an angle of depression of 20 degrees. How far away is

81. ## Math

The price of an international call from Detroit to Paris, France, using a particular phone company is 75 cents for the first 5 minutes and 10 cents for each additional minute or fraction thereof. What is the cost (in dollars) of a 25 minute call from

82. ## christian religious knowledge or studies

1) write out what happened at the golden gate 2) peter,james and john said something at the golden gate what is it 3)how do you start a prayer and end a prayer(in a catholic way)

83. ## math

2/3k-(k+1/4)=1/12(k+4)

84. ## Chemistry

An unknown was prepared with the concentration of 0.0000890 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1750.0 M–1. The

85. ## Math

How would you solve the following 2 equations for "X"? x-4(divided by)12=7(divided by3 and 100(divided by)30=4(divided by)3x

sue drives her 1452 kg car along a straight road at a constant velocity of 30 m/s [E]. Ger brakes suddently give out. she puts the car in neutral and lets it coast for 25 seconds. The air drag decelerates the car to a velocityof 25 m/s [E]. assume a

87. ## algebra

what is the solution of the system 9x+8y=21 x=13-6y

88. ## PHYSICS- SCIENCE

1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sun’s radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun

89. ## biology

explain the role of antigens and antibodies in natural and artificial control of diseases

90. ## english question about writing comparative essay

For a comparative essay, i don't really know what to do once i've made my elaborations on both books for the body paragraph. example of what i did: topic sentence, talk about book #1, quote, elaborate. talk about book #2, elaborate...... and i'm stuck

91. ## chemistry

The actual chemistry question was, given that there are 4.19 g of C6H6 how many moles do you have and this is how I solved it and it was wrong. 4.19g/78g/mole = .054 moles of C6H6

92. ## English!

For a paper on women in the workplace, you quote information from an article from the popular magazine Cosmopolitan. Do we have to cite this?

93. ## English!!!

if i find a picture like Mona Lisa on the Internet and used it in your PowerPoint presentation. do i have to cite this?

94. ## math

Let g(x)=-x^2+4x+1 Find the following g(-1/x)

95. ## Rhetoric

What are some examples of logos? Anyone know any specific examples of logos from The Day of the Locust by Nathaniel West or from the movie Chinatown?

96. ## Essay (conclusion)

4 Keys to Success The first key to success is having a positive attitude. Having a positive attitude can get you far in life. Self esteem and confidence is the first part to being positive. Being comfortable with who you are and having confidence in your

97. ## computer

• Compare and contrast LANs, WANs, CANs, MANs, and HANs

98. ## marketing

"What are the differences among the research approaches (and thinking styles) that guide the predominant kinds of studies done in operations research, marketing, finance, and/or organizational behavior?"

99. ## HCA 240

I need to know if my diagnoses of the following symptoms are correct for the I start my research: The 5-year-old African-American male is visiting his new pediatrician for a kindergarten physical and his mom tells the nurse that she carries the ¯Sickle

100. ## economics

how to make a questions for the chapters 12,13 and 18 .

101. ## psychology

give and example of drive reduction and include homeostasis in your answer i can't figure this out can you help

102. ## Finance

help with loan scenarios fin 200

103. ## math

find k, given that the following are consecutive term of a geometric sequence. k,k+8,9k thank u

104. ## english

why is it important to have a career path?

105. ## math

what will investment of 10 000 Yen amount to after 5 years if it earns 8% p.a. compund semi-annually ?

106. ## math

what are he steps true ratio and proportion problems? what are the steps for solving when it is false? how do i know when to invert?

107. ## ethics

what is the difference between a moral and immmoral issue?

108. ## Physics

What experiment can be used to prove that the value of gravity near the earths surface is constant ie. 9,8m.s

109. ## math

solve 2.84 = (1 + x ) ^ 12

110. ## Pre-Algebra B

5 | 4,5,5,6,6,6,7,8,8,9 6 | 0,0,1,1,2,2,2,3,4,4,4,5,6,7 7 | 0,1,1,1 How do you find the mean of this stem-and-leaf plot? Please answer!!

111. ## English

Thank you for your help. Can you help me find the mistakes in this paragraph please? 1) Last week we tried to go to the stadium, but during the trip we ran into very strange problems 2) First of all, a tyre burst, so we stopped the car, and we tried to

112. ## HCA210

"describe at least two roles of medical staff and two roles of hospital administration" Do you think they are asking for positions, like a doctor or nurse? Or functions like hiring personnel? I am not sure what the question means by "role", any

113. ## ethics

Thanks for the info. I still can't separate the two. Any examples you could give? If someone asked me to pick out something would that be a moral issue or immoral issue? I'm so confused

114. ## Health Physics

What type of machine are the joints of the human body?

115. ## Health Physics

A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to the amount of work done

116. ## Health Physics

A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

117. ## Health Physics

As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?

118. ## environmental science

i need to design an energy saving building ive chosen to design an energy saving hotel. i can`t think of what to do . ive thought of lights that go off when you leave the room. water tub to collect rain water and to use to water the grounds of the hotel.

119. ## science

How does the orientation of the phospholipids in the bilayer allow a cell to interact with its internal and external environment?

120. ## ethics

i believe that depending on the person that these could be either moral or immoral.

121. ## british literature

Compare and contrast the narrators of "Our Society at Cranford" and A Scandal in Bohemia."

how can I write a narrative about a spaceship landing in my yard?

123. ## e

This is true, but how does picking out something for someone become moral vs immoral? if they ask me to pick it out for them and i pick something that makes them look bad am i being immoral because i knew that they wouldn't look good? Are they being

124. ## math

how do i get sec70 x cos70 algebraically?

125. ## science

What are the bones in the leg?

126. ## Public Speaking

where can i find a list of people or several people who perform interpersonal communication skill well. Im looking for example i can draw from to see what behaviors would be useful to incorporate into my own repertoire?

127. ## math

what are the odds of drawing a spade and a heart out of a regular deck of playing cards?

128. ## Trig.

A preseason game Tennessee Titans punter A.J. Trapasso hit the giant HD TV screen suspended above the field at the new Cowboys stadium. At the time of the punt A.J. was 30 yards away from the edge of the tv screen (the tv screen starts at the 40 yard line,

129. ## Communication Language Studies

Give an example of a situation in which the hearer may have a stake in understanding things correctly, and one in which the hearer may not. Thank you!

130. ## Math

I posted this problem the other day and someone answered it but when I checked my book I realized that I wrote the problem wrong. The answer is suppose to be 43/128 and I can't get it. Thanks (1/4)^2/(1/2-3/4)+ 3/2^3

131. ## Math

A marching band has 88 students. If the band limits the group to marching in 11 rows, how many students will march in each row?

132. ## Language Studies

a. Describe one commercial seen or heard where the speaker is using a regional or ethnic dialect. What was being advertised?

133. ## Math

How would you explain how to do this problem step by step in words? The answer is suppose to be 43/128 11/16-(-3/4)^2/2^3/5

N/3 + 6 = 10

135. ## POLitical Science

Does the War Powers Act serve to constrain or expand the President's ability to take the nation to war?

136. ## Trigonometry

John is an Atlanta Hawks fan with seaon tickets for the past 5 years.John estimates that his seat is about 50 ft higher than the basketball court and he has calculated that he looks onto the court at an angle of depression of 20 degrees. How far away is

137. ## biology

need help If one strand of DNA, had bases ordered ATCCGTC, what would be the bases of its other strand? Compare and contrast mitosis and meiosis as to: number of divisions, number of cells produced, number of chromosomes in parent cells and in gametes.

138. ## hsm 230 ethics

analyze the following ethical dilemma fro the perspective of rationality and respect. a local nonprofit organization that networks with other serve agencies

139. ## chemistry

How many moles are in 13grams of C6H6. should this question be broken down into its imperical formula (CH)6 and calculate the number of moles of CH and multiply by 6 or calculate the gram molecular wt of C6H6 and divide it into 13 grams?

140. ## math

WHAT IS A 100-GON

141. ## History

What are some good, recent books on the Crusades that are well-suited for use in a research paper?

142. ## Math

I have been able to figure out everything on my assignment but this one. Can anyone help? Five numbers are to be picked, without repetition from 44 numbers to determine the winner of the Fortune Five game in the state lottery. If the order of the numbers

143. ## math

2/3k-(k+1/4)=1/12(k+4)

144. ## psy

Write a 200- to 300-word critique of the response assigned by your facilitator. Include a summary of the decision stated in your assigned response, whether or not this response has made you see the scenario differently, and your critique of your

145. ## Social Studies

Unscrambel these canals in the benelux countries, thorn ase, bratle, tresmanad-neihr

146. ## algebra

What is 8+3X6-4-1=13 using () only?? We have tried everything!

what is 6/7 divided by 3/14=

how does placement of spacers between the eye bolt and magnets affect the strenght of the magnets pull on the eye bolt?

149. ## physics

2âˆš2...can someone tell me what that expression means

150. ## health

what role do health care workers play in quality care?

i need information about the virginia plan but it has to be more on a college levle

152. ## Math-Probability

This is another one I need help with. On a TV game show, the contestant is asked to select a door an then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection