# 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. ## 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

4. ## math

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

5. ## 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.

32. ## 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)

33. ## Math115

Solve by the elimination method. 5x-15y=2 and 5x-15y =3 Is there a solution of an ordered pair? Are the infinitely many solutions? or is there no solution? I got that there is no solution.

34. ## 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

35. ## math

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

36. ## 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

37. ## physics

A charge of +4q is fixed to one corner of a square, while a charge of -9q is fixed to the opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners?

38. ## 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

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

40. ## Physics

I need help with these three questions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c)

41. ## computer science

explain six services provided by networks

42. ## math

If a person were driving 162 kilometers per hour on a U.S. highway with a speed limit of 70 miles per hour, would he likely be speeding?

43. ## 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

44. ## stratergies to success

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

45. ## ATTN: DRWLS RE: PHYSICS

pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john?

46. ## Trig.

79): Find the area of the sector of the circle. Radius: 2.5 feet. Central Angle: 225 degrees. I multiplied (1/2)(25/4)(5pi/4), and I got 100pi/16, which reduced to 50pi/8 when I halved it. I reduced that to 25pi/4 or 19.63. But the book's answer is 12.27.

47. ## Trigonometry

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,

48. ## 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

49. ## 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

50. ## 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

51. ## PHYSICS- SCIENCE

. Phobos is the larger and closer of Mars’s two moons. It has no atmosphere, a mean radius of 11 km, an albedo of 0.07, and an emissivity of 1.0. (i) Assuming that the radiative temperature of Phobos is 222 K and that it is spherical, what is its mean

52. ## PHYSICS

pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john?

53. ## 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

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

55. ## 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!

56. ## 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

57. ## 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!

58. ## U.S. History

What factors worked to create a shared "American Identity" by the mid 18th Century?

59. ## 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?

60. ## math

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

61. ## 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? I took 13 grams

62. ## 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

63. ## Literature

11. Which of these is most like self-possession? a. self-control b. self-pity c. self-esteem d. self-doubt I'm stuck between A and C 14. Which of the senses do these excerpts appeal to? A- (Sun) "...until with shining ringlets in the East the dawn

64. ## math

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

65. ## 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

66. ## trig

cos2(120degrees) help me solve this please

67. ## biology

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

68. ## science

What are the bones in the leg?

69. ## 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

70. ## Science

Is this true? If not why? Oceanic crust near the mid-ocean ridge is younger than oceanic crust farther away from the ridge?

71. ## Science

Vibration and Wave Fundamentals 1. A machine gun fires 10 rounds per second. The speed of the bullets is 300 m/s. (A.) What is the distance in the air between the flying bullets? ____ ANSWER=30 (B.)What happens to the distance between the bullets if the

72. ## Math-Fair Game question

the game of dots is played by rolling a fair die and receiving 1\$ for each dot showing on the top face of the die. What cost should be set for each roll if the game is to be considered a fair game?

73. ## geography

What are 3 categories of econmic and social growth?

74. ## 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

75. ## 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

76. ## math

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

77. ## 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

78. ## Health Physics

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

79. ## 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

80. ## 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

81. ## 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?

82. ## Language Studies

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

83. ## 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)

84. ## 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.

85. ## Science

Why is this statement true? With the range of data available, geologists cannot predict exactly where and when earthquakes will occur.

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. ## Elem. Math

Estimate the number of personally constructed greeting cards possible at a machine if there are 12 designs, 30 messages, 18 closings, and 10 different paper stocks on (1 + 1)n, which to print the card. Indicate how you made your estimate. How valid was

88. ## 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. This morning when I posted I had put the wrong answer. The answer is suppose to be 1/8 but I don't understand how to solve the

89. ## 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?"

90. ## 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

91. ## 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

92. ## Physics

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

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

94. ## health science

Describe one of the contemporary models of health from another country, and explain its strengths and weaknesses?

95. ## 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

How to make a cover letter for the Hopiyals jobs?

97. ## English

Can you help me check this paragraph? Thank you for your last corrections! 1) It was midnight. We were walking through the street. There wasn’t anybody, everything was quiet, when a fast car jumped out of the darkness. 2)The car crashed against a wall

98. ## 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

99. ## Math

What are the odds in favor of getting at most two heads in three successive flips of a coin? This problem has to be done in ratio not fraction. Can anyone help?

100. ## 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?

101. ## computer

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

102. ## Disorders

All of my questions are only hypothetical scenarios for my class assignment and will not be used to provide a diagnoses.

103. ## ethics

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

104. ## british literature

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

105. ## 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?

106. ## 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?

107. ## math

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

108. ## 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

109. ## 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

110. ## 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

111. ## Math

A student asks whats wrong with the argument that the probability of rolling a double 6 in two rolls of a die is 1/3 because 1/6+1/6= 1/3? How do I explain the misconception? I am thinking since there are six sides and they want to roll double 6's in two

112. ## 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

113. ## algebra

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

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

115. ## 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

116. ## biology

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

117. ## 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

118. ## psychology

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

119. ## ethics

what is the difference between a moral and immmoral issue?

120. ## 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!!

121. ## high school social studies(in geography)

what are the all seasons of india?explain each season?

122. ## Health Physics

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

123. ## 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.

124. ## 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,

125. ## 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!

126. ## 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

127. ## physics

What is the potential energy of something with a mass of 10g on a hill with a height of 5m?

128. ## 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

129. ## 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

130. ## 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?

131. ## Health Physics

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

132. ## 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

133. ## math

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

134. ## Social Studies

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

135. ## algebra

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

136. ## 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?

137. ## economics

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

138. ## Finance

help with loan scenarios fin 200

139. ## 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?

140. ## 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

141. ## 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?

142. ## 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

143. ## 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

144. ## POLitical Science

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

145. ## History

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

146. ## math

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

147. ## physics

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

148. ## health

what role do health care workers play in quality care?

149. ## english

why is it important to have a career path?

what is 6/7 divided by 3/14=

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

152. ## math

solve 2.84 = (1 + x ) ^ 12