# Questions Asked onNovember 21, 2009

1. ## Chemistry

What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a 6.00 M KCl solution to a volume of 0.500 L? A. 1.67 B. 0.600 C. 0.0167 D. 3.0 E. none of these My initial thought was to take the 6.00 M KCl/0.500 L, for an answer of 12.

2. ## Chemistry

Given that the solubility of sodium chloride is 36 grams per 100 grams of water. Which of the following solutions would be considered supersaturated? A. dissolve 5.8 moles of NaCl in 1 L of water B. dissolve 1.85 moles of NaCl in 300 ml of water C.

3. ## physics

You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

4. ## spanish

We sing a song entitled He drinks tequila,and she talks dirty in spanish ^ there are a couple of phrases that I don't know the meaning of could you help please. the first is "a brasa mi puerta" The second is "to dal ay nochay" I hope this is not offensive

5. ## Anatomy and Physiology I

the blood-brain barrier is effective against, what

6. ## Physics

Two astronauts, one of mass 61 kg and the other 82 kg, are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 12 m?

7. ## math

Find the nth term of the geometric sequence whose initial term is 7 and common ration is 7. (your answer must be a function of n)

8. ## science

(Points: 10) For the following: i) HClO4 > HBrO4 > HIO4 ii) NH3 > PH3 > AsH3 > SbH3 iii) HOClO3 > HOClO2 > HOClO > HOCl iv) HBr>HCl>HF The order of acidity is correct for which series? 1. ) all are correct 2. ) ii and iii 3. ) ii and iv 4. ) ii 5. ) i,

9. ## physics

A children's merry-go-round in a park consists of a uniform 200kg disk rotating about a vertical axis. the radius of the disk is 6 m and a 100kg man is standing on the outer edge when the disk is rotating at a speed of 0.20rev/s. how fast will the disk be

10. ## physics

Two vehicles with the same mass collide and lock together traveling 28 m/s at 37 degrees north of east after the collision. How fast was the car traveling that was heading north while the other vehicle was traveling east?

11. ## criminal justice

a 700- to 1,050-word essay in APA format on the qualities of effectiveness versus ineffectiveness of judges. In your essay o Describe the responsibilities of judges. o Identify attributes of both effective and ineffective judges. o Provide an example of an

12. ## physics

A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 12 meters. If the spring is compressed only half as far the second time, how far up does the dart go this time (no friction and using

13. ## Physics

A 9000 kg boxcar traveling at 17.0 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 6.5 m/s. What is the mass of the second car?

39. ## College Math II

If a ball is tossed into the air from a height of 6 feet with a velocity of 32 feet per second, then its altitude at time t (in seconds) can be described by the function A(t) = - 16t^2 + 32t + 6. Find the altitude of the ball at 2 seconds. I am having

40. ## Physics

At what temperature is the rms speed of helium molecules half its value at STP (0 C}, 1.0 atm)?

41. ## college

Environmental Factors Contribute to Juvenile Crime and Violence. Delbert S. Elliott. Opposing Viewpoints: Juvenile Crime. Ed. A.E. Sadler. San Diego: Greenhaven Press, 1997. My paper is asking for the title and citation. Would I include all of the above?

42. ## Calculus

[Integrals] h(x)= -4 to sin(x) (cos(t^5)+t)dt h'(x)=?

43. ## math

Century is to decade as dollar is to: (a) penny (b) nickel (c) dime (d) quater

44. ## Math

The perimeter of a rectangle is 34 feet and the area measures 60 square feet. What are the length and width of the rectangle? (Hint: Use the equations : perimeter = times the sum of the length and the width area = length times width)

45. ## physics

How can I calculate the tension in the two cords that are labeled A and B in a two mass system? Cord A is on top with a 1 kg mass attached and Cord B connects this mass to a 2 kg mass. The two mass system accelerates directly upward at 2m/s^2.

46. ## math

1. (1 pt) Let g(y) = 8y2 + 13y + 5. A function f is known to be continuous on ( −∞, ∞), to satisfy g ◦ f (x) = 0 for all real x and it is known that the value f (8) is not equal to −1. You have enough information to determine f precisely.

47. ## physics

A 4.0 kg particle is moving along the x axis to the left with a velocity of v= -12.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the

MY DAUGTHER WILL BE 10 YEARS NEXT WEEK AND THE HOMEWORK SAID: A NORMAL PERSON BLINKS ABOUT 25 TIMES PER MINUTE WHEN AWAKE. A) HOW OLD WILL YOU BE ON YOUR NEXT BIRTHDAY; B) TO THE NEAREST MILLION, HOW MANY TIMES WILL YOU HAVE BLINKED ON YOUR NEXT BIRTHDAY?.

49. ## Math

Molly’s age is twice Anita’s. If the sum of the squares of their ages is 80, then Translate these words into an algebraic equation to determine their ages?

50. ## physics

It has been suggested that rotating cylinders about 12 mi long and 5.4 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall

58. ## math

Thomas is playing Tic-Tac-Toe with a computer. It is the computer's turn to place an "x" on the board. If the computer makes its moves at random in the open spaces, what is the chance it will win on this move?

59. ## Dividing Rational Expressions

x^3-8/x^2-4 divided by (x^2+2x+4)/(x^3+8). This becomes ((x-2)(x^2+2x+4)/(x+2)(x-2) times ((x+2)(x^2-2x+4))/(x^2+2x+4). I understand that (x-2)(x^2+2x+4)=(x^3-8) when I distribute it, however, if I didn't have the help of my book, I'd have no clue how to

60. ## Ms Sue geography

sorry to ask again for help but i need to include a graph in my report about the turkish earthquake but i cant think what graph to do. it needs to show relevant information i was going to do a graph about how many people died but i dont know if that

61. ## Finance

I need some help with an assignment that I am working on for Introduction to Finance class.

62. ## math

Roberto ate 3 pieces of a pizza and them felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into?

63. ## physics

An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the

64. ## College Math II

a^4 - ab^3 = I have asked this question on many web sites and still cannot find the steps on how to solve this problem. Can you please help.

65. ## American National Government

Why is the judicial branch a non-parisan body? I know that the judicial branch has independent power but that is really all that I know. Could someone please help me? Thanks.

66. ## Physic

31m/s is a typical highway speed for a car. At what temperature do the molecules of nitrogen gas have an rms speed of 31 m/s? (Answer in K)

67. ## College Math II

(4 + sqrt(3)^2 = I am not sure how to follow the steps to come up with the answer. Can someone help me understand the steps. Thanks.

68. ## College Math II

Rationalize the denominator and simplify. sqrt(6)/4srqrt(3) + sqrt(2) = I cannot figure out how to do this and simplify. Can someone help me. Thanks.

69. ## Creative Writing

Here is my intro (that bobpursley checked yesterday), and my first body paragraph (that needs to be checked now) : What is wisdom? Is it in the stories that Grandfather told me, or is it in what I achieved from schooling? The reality is, wisdom is not

70. ## physics

The potential energy of a particle on the x-axis is given by U= 8xe ^-x ^2/19 where x is 1 meter and U is in Joules. Can you explain for me how to find the point on the x-axis for which the potential is a maximum or minimum and is this answer a point of

how do i solve this thermochemical equation? and what r the steps to it 1. Find the heat of reaction for the following equation. N2(g) + 2 O2(g) -> N2O4(g) given the following steps 2NO2(g) -> N2(g)+ 2O2(g) delta H=-84.8 kj N2O4(g)-> 2NO2(g) delta H= 72.8

72. ## Algebra

Please help. I have tried many times to come up with something after reading the material but I am completely stumped. A cubic container, with sides of length, x inches, has a volume equal to x^3 cubic inches. The height of the container was decreased and

Can someone tell me if my translation is correct? I have to write a short children's story. Here is what I have written so far: Rufus habitaret in Romam. Is es novem annos vetus. !@#$%^& ortus, gerebat bulla. Bulla defenderet is de malum. asked by anonymous 74. ## AP Chemistry Will a non-volatile solute always lower the vapor pressure of the pure solvent in solution? Why or why not? asked by Anonymous 75. ## physics If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and asked by Josh 76. ## stats Ok, so in a game of Texas Hold 'Em you have two hearts in your hand. The next two cards places are both hearts, but the third one is a spade. What are the odds that by the end of the round you will have a Flush (5 of same suit). I've asked someone else and asked by vernita 77. ## English 1. Doctors Without Borders help many sick people in poor countries. 2. Doctors Without Borders helps many sick people in poor countries. (Do I have to use 'help' or' helps'? Which one is correct?) asked by rfvv 78. ## medical terminology according to the article reduce abbreviation errors do you think enough steps have been taken to reduce errors explain why you agree or disagree asked by mary 79. ## gr 12. advanced functions Trig identity Prove: cos2x tan(pie/4 - x) ------- = 1 + sin2x asked by avm 80. ## College Math II Show a complete solution to each problem. Find the exact length of the side of a square whose diagonal is 3 feet. I am having problems understanding how you figure out this problem. Can someone help me? Thanks. asked by Lori 81. ## Probability The serial number on a$10 bill contains eight non-zero digits. If your $10 bill contains the digit 7 at least once, you win a prize. The probability that your$10 bill will be a prize-winning bill is what?

which of the following proofread's mark is incorrect

83. ## math

if the 7th day of the month is on a tuesday on what day is the 25th

84. ## Algebra

Can someone please assist me. Thanks One side of a rectangular stage is 4 ft longer than the other and the diagonal is 20ft. Use the Pythagorean Theorem to determine the lengths of the sides.

85. ## English(literature)

What citations from the Catcher in the Rye show Holden Caulfield has sympathy toward the less fortunate?

87. ## math

Bob has three sacks of apples and three more apples in his pocket. Each sack contains the same number of apples. Altogether, Bob has 33 apples. How many apples are in each sack? Solve with a Linear Equation is this right 3x+3=33 3x=30 30/3=10 x-5=10

88. ## health care

Write a 350- to 700-word paper in APA format describing two approaches or indicators to measuring patient outcomes. Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient

89. ## Science

how do you draw a the amino acid Phenylalanine? thanks:)

90. ## Literature

I have to write an expository essay interpreting a peice of art from my textbook. I chose the painting The Grinder(1924) by Diego Rivero. Need help filling this out: Elements of Art: ? Subject Matter- A girl is grinding something. Lines and Shapes- ?

91. ## Movie review

I have to write a review of a film or play I've seen and I chose "Law Abiding Citizen" I need help (the theme isn't really a theme, its the plot but I can't really come up with a theme.) Could this be it? A man seeks revenge on the justice system for not

92. ## French

could you check this please Directions: Write an 8-10 sentence paragraph about your morning routine written in passé compose. The paragraph should include the following: a. 8 activities b. At least three transitional words such as d'abord, ensuite, puis,

93. ## physics

In order to move a heavy object you must push against it with a larger force than it pushes on you. Is this true or false?

94. ## Music

I need to kown all 8 letters music instruments name.

95. ## English

1. It can give you happiness when you give happiness to others. (What does 'it' refer to in this sentence? What functions does 'it' have?") 2. Volunteer work is not something that you must do. 3. Volunteer work is not anything that you must do. (Are both

96. ## education

what is book keeping in educational management give me articles on physical plant planning in educational management

97. ## Algebra

-18 is less than or equal to 4x-7 is less than or equal to -6 (Please explain in detail so I know for the future)

98. ## College Math II

_m^2 -1___ * _2m -2____ = (m – 1)^2 3m + 3 Actually my computer won't allow the line and these are like fractions. m^2 - 1/(m-1)^2 * 2m - 2/3m +3 = I am having a problem trying to follow the steps to show my work and come out with the correct answer.

99. ## College Math II

x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.

100. ## Math 116

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40mph and Train B at 50mph. Train A passes a station at 9:20 am. If train B passes the same station at 9:32 am, at what time will train B catch up to train A?

101. ## college

The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.

102. ## College Math II

Solve by any method. x(x + 1) = 12 I am not sure what method to use to show my work and figure out the answer. Can someone help me understand this problem. Thanks.

103. ## College Math II

Write a complete solution to each problem. If the length of a rectangle is 3 feet longer than the width and the diagonal I s 15 feet, then what are the length and width? I do not understand how to solve this problem. Can someone help me? Thanks.

104. ## Geography

Which of these cities is not located about 55 degrees N latitude and has the largest population? Tbilisi, Georgia Minsk, Belarus Kiev and Odessa, Ukraine Thanks -MC

What makes some companies more profitable than the others

Can someone look over my admissions essay for Brown?

How do I figure: ?/8 = 15/? = 24/32

108. ## French

could you check this also Directions: Use a graphic organizer that shows the order in which you do your morning routine. All activities should be in the infinitive form. For example, the first activity would be "se reveiller" because you wake up before you

109. ## Physics

We study water of 1.0 g/cm3 density in an open container with its surface exposed to the atmosphere. If we measure the pressure first at a depth d and find the value p1, and then at twice that depth to find p2, the two results are related in this form: a)

110. ## geometry

if QR=3x and RS=x+12, then x=?

111. ## physics

A ball is thrown up in the air with an initial speed of V. If the air exerts a constant frictional force F on the ball, show that H = (V^2) / 2(g+F/m)

112. ## corrections

response describing a sociological aspect of prison life. This may include the subculture of prisons,including violence, sex, gangs, death, and language, or the social organization of prison, such as demograhics, relationships, social groups, social

113. ## average math

TRUNK AND TAILS bella the dog weighs 72 pounds. that's ABOUT 8628 pounds less than tarra weighs. how much does tarra weigh? i think the answer is 8530.

114. ## physics

The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.

115. ## College Math II

Solve by any method. a^4 – 5a^2 + 4 = 0 I am having problems figuring out what method to use to solve this problem. I need to show my steps and I am not sure how to do this. Can someone help? Thanks.

116. ## College Math II

Solve each problem. Find the quotient and remainder when x^2 – 5x + 9 is divided by x – 3. I don't understand how to divide and solve this problem. Can someone help me understand the steps on how to do it. Thanks.

117. ## physics

A mass of 1.1 kg is attached to two cords. The cords are each an angle 30 degrees above and below the horizontal, The mass circles around the vertical pole at a fixed speed of 15 m/s in a circle of radius 0.50 m. How do I calculate the magnitude of the net

118. ## algebra

parallel to line 2/3x-4=0 through (-4,-6)

119. ## health

Compose an essay that answers the following questions: What arguments are being raised by the Grocery Manufacturers of America? Are they taking responsibility as contributors to the obesity epidemic? If yes, list them. If not, why not? Are they

120. ## Math

What are the roots of x^2+3x+1? I'm kinda confused on the definition of roots...help please?

121. ## physics

A 2kg mass is released from rest and slides down an inclined plane of 60 degrees a distance of 1 eter. It strikes a 250 N/m spring. What is the maximum compression of a spring?

122. ## science

how is Dna copied?

123. ## Maths

keep getting stuck for integrate e^(bx) cos x i get = cos x e^bx/b - int -sin x e^bx/b = cos x e^bx/b - -sin x e^bx/b^2 - int - cos x e^bx/b^2 this is where i get stuck please help

124. ## dynamath

TRUNK AND TAILS bella the dog weighs 72 pounds. that's ABOUT 8628 pounds less than tarra weighs. how much does tarra weigh? i think the answer is 8556 or 8030.

125. ## hea;th care

I am writing a essay on EMR and can not find The adoption period for EMR. I know it is a growing process but would like to know how long it takes ot first set it up in an organization. Can anyone help?

126. ## history

republican veiw on the iraq war

127. ## critical thinking

Select a topic of interest and explain how you would come up with a reliable sample for obtaining peoples’ opinions.

128. ## communications

Does anybody know what an eletronic version of a print ad is? I have an idea, but I am not sure if I am correct

129. ## English

Can you please check the grammar in the sentence thank you. Another Country begins with Rufus walking the streets of Seventh Avenue, hungry, broke, and having nowhere to go until he makes his way to a jazz bar.

130. ## Algebra 2

Find the last digit in 39999. I can not figure this one out. Can some one explain this

131. ## Algebra 2

Find a positive integer smaller than 500 that has a remainder of 3 when divided by 5, a remainder of 6 when divided by 9, and a remainder of 8 when divided by 11.

132. ## For Writeacher

I saw your post this morning, for my question last night..thank you so much!! =D -MC

133. ## english

i'm having trouble with coming up with a topic sentence about death.

134. ## history

what is the republican view on the war in iraq

135. ## math

Roberto ate 3 pieces of a pizza and them felt that he should pay 1/4 of the cost because that's the fraction he ate. How many pieces was the pizza cut into?

136. ## Social Studies

who got the nobel peace prize before barack obama

137. ## Calc

how do I integrate x^4-3y^3+2y^2? thanks

138. ## math

HELP PLEASE!!! ESPECIALLY PART 2 2. The following questions do not require the data above. Answer with the data given in each question. i. There is a total of approximately 12.4 billion acres of agricultural land (cropland, rangeland, irrigated land) on

139. ## College Math II

x/x – 1 - 3/x = 1/2 I am not sure how to solve this equation and show my work. My problem just says to solve the equation. Thanks.

140. ## math

1 ms = ? s 1 mile second = ??? second

how do i do a question like x(x-4)=0 using the zero product rule?

142. ## HCA 220

summarize the processes of digestion, respiration, and circulation and how are they interrelated

143. ## sociology

is it difficult to accurately measure prejudice?

144. ## science

compare and contrast mitosis and cell divison