Questions Asked on
September 8, 2010

  1. physics

    A log is floating on swiftly moving water. A stone is dropped from rest from a 84-m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 3.6 m/s, what is the horizontal distance between the log and the

    asked by Randy
  2. chemistry

    A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at −2.34°C. Calculate the molar mass (in units of g/mol) of the ascorbic acid. Kf of water is 1.86°C/m.

    asked by Diana
  3. chemistry

    use exponential notation to express the number 480 in 3 significant figures and 4 significant figures

    asked by mathew
  4. algebra 2

    there are 55 blades of grass in 1 in.2 of the lawn. there are 230 blades of grass in 4 in.2 of the same lawn. how many blades of grass are in 3 in.2 of lawn

    asked by Anonymous
  5. chemistry

    I am having a hard time with this one not sure how to set up the problem. A gas can holds 1.7gal of gasoline. What is this quantity in cubic centimeters? I know that 1gal=3.785L I know that 1L=1000cm^3 I have tried 1.7gal*3.785L/1gal=6.4345cm^3. I just can

    asked by will
  6. reading

    shoud i add a predicate or a subject to this sentence this baseball team.

    asked by abby
  7. geometry

    If EF = 2x – 12, FG = 3x – 15, and EG = 23, find the values of x, EF, and FG. The drawing is not to scale.

    asked by angel
  8. Chemistry Balancing

    K3PO4(aq) + 3Sr(NO3)2 ==> Sr3(PO4)2 + K2(NO3) the reactant was given. I can't seem to balance this. whenever everything is even either the 3Sr(NO3)2 or K2(NO3) is not balanced. Also, the 3Sr in 3Sr(NO3)2 was already there.

    asked by Amy~
  9. Statistics

    The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. Show your work. a. Highest 10 percent; b. Highest 50 percent; c.

    asked by Shon
  10. 9th grade

    If a 10.0 g piece of metal required 100 cal to raise its temperature by 20°C, what would you report as its specific heat?

    asked by lanette
  11. Pre Calculus

    Determine the coordinates of the point (xy) where the curves y=(12)x−5 and y=x2+2x−15 intersect in the third quadrant

    asked by Jack
  12. literatue

    In "A White Heron," how does Sarah Jewett portray Sylvia's attitude about money

    asked by Anonymous
  13. chemistry

    for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.

    asked by Jordyn
  14. math

    Triangle ABC is right-angled at B. Segment BD is an altitude of the triangle. AB=6 and CD=5. What is the value of x+y+z+1?

    asked by jon
  15. ap chem

    for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.

    asked by chris
  16. physics

    On planet Tehar, the acceleration of gravity is the same as that on Earth but there is also a strong downward electric field with the field being uniform close to the planet's surface. A 2.16 kg ball having a charge of 4.80 uC is thrown upward at a speed

    asked by VJC
  17. Physics

    a school bus takes 0.530 h to reach the school from your house. If the average velocity of the bus is 19.0 km/h to the east, what is your displacement?

    asked by Jasmine
  18. calculus

    Find the values of a and b that make f continuous everywhere. (Enter your answers as fractions.) x^2-4/x-2 x

    asked by plz heelp fastttt
  19. social studies

    what would happen if more gasoline-powered motor vehicles were used around the world?

    asked by tony
  20. math

    riddle: my ones number is double my tens number, I'am less than 70 and more than 60

    asked by katirina
  21. Math

    Find the value of the following. 10^(-10log3) The log exponent is confusing me. Could someone please help me? Thanks.

    asked by Ed
  22. calculus

    Use Newton's method to approximate a root of the equation 3sin(x)=x as follows. Let x1=1 be the initial approximation. The second approximation x2 is and the third approximation x3 is for x2 I got -1.454 which is right but I can't get x3

    asked by HELLLLLPPPPP
  23. Math

    A spherical balloon expands when it is taken from the cold outdoors into a warm house. If the surface area increases by 50% (factor of 1.50), by what percentage does the radius of the balloon change? a)7.7% b)50% c)100% d)75% e)22%

    asked by Johnny
  24. chemistry

    What mass of water (in grams) is needed to dissolve 28.7 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m (molal) solution?

    asked by Diana
  25. chemistry

    2-Methyl-2-propanol (tert-butanol) reacts to give 2-chloro-2-methylpropane (tertbutyl chloride) and 2-methyl-1-propene. The reaction mechanisms are:

    asked by darali
  26. english

    Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. Bold each adverb. Underline each adjective. Compare the event to one or more similar events. When comparing, use at

    asked by smb
  27. MATHS----Matrix

    For a given square matrix A the predicted values of matrix B are: predicted B=A(A'A)^(-1)A'B why is the matrix C=A(A'A)^(-1)A' an idempotent and symmetric matrix? and is this matrix invertible?

    asked by Lisa
  28. Pre Calculus

    The strength of a cable is proportional to the square of its diameter. If a 2-cm cable will support 800kg, how much will a 3-cm cable support?

    asked by Jack
  29. 7th grade

    Simplify each of the following expressions using the distributive property. need help please show work 5(x+y) -3(5+t)

    asked by Henry
  30. chemistry

    what subshells would be found in the shells with n=3 and n=4?how many orbitals are there in a g subshell?

    asked by kabelo
  31. algebra

    if i had 8765.00 in my bank and i made 9006.04 in twelve months with out puting any money in the bank what is the intrest rate that i have

    asked by Anna
  32. carrol high school

    A car brakes from 60 mph to a full stop in 4 seconds. Find the accelerayion of the car during this interval

    asked by physics
  33. 5th grade

    i need help with my homework! 6 squared---? write the 9 digit number that has, 5 in the tenth place, 6 in the thousands place 3 in the millions place 4 in the hndred-thousands place 9 in the hundreths place. 0 in all the other place. -,---,---.-- also can

    asked by pat
  34. chemistry

    Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849 -g sample of iodine is accidentally contaminated with 1.00070 g of ^129 I, a synthetic radioisotope of iodine used in the treatment of certain diseases of the thyroid gland. The mass of

    asked by Mely
  35. Algebra/Word problem

    media services charges $20 for a phone and $30/month for its economy plan. what is the total cost for 10 months service C(t)= 30t +20= total cost is $500 for 10 months?

    asked by Amy
  36. western civilization

    Describe the rise of Louis Napoleon and explain why and how he was able to have such an influence on France at the middle of the 19th century?

    asked by Taylor
  37. physics

    In the absence of air resistance two balls are thrown upward from the same launch point. Ball A rises to a maximum height above the launch point that is four times greater than that of ball B. The launch speed of ball A is _______ times greater than that

    asked by Brantley
  38. chemistry

    A solid that has a high melting point and conducts electricity in solution is a(n) ______________ solid. Im not sure what the answer is it molecular?

    asked by Cecilia
  39. calculus

    Find the values of a and b that make f continuous everywhere. (Enter your answers as fractions.) x^2-4/x-2 x

    asked by helpppp!!!!
  40. math

    There is a small circle on the left overlapped by a larger circle to the right. The problem reads:If all four sided shapes were here (meaning the smaller circle to the left, and all yellow shapes were here meaning the overlapping larger circle to the

    asked by Monica
  41. earth science

    What forces are opposing on one another throughout the life of a star and how do they influence the various stages in the life cycle?

    asked by cassi
  42. Physics

    A uniform electric field of magnitude 203 V/m is directed in the negative y direction. A +12.5 μC charge moves from the origin to the point (x, y) = (19.5 cm, 51.8 cm). 1) What was the change in the potential energy of this charge? 2) Through what

    asked by VJC
  43. physics

    An electric field of 630 V/m is desired between two parallel plates 15.9 mm apart. How large a voltage should be applied?

    asked by VJC
  44. english

    could somebody help me unscramble these letters? aicjam it's a product found in the grocery store.

    asked by kay
  45. math

    What is the rule? 6---------4 8---------6 10--------8 50--------48 Rule:________________________________

    asked by Monica
  46. Physics

    What is the speed of a 680 eV electron? What is the speed of a 3.50 keV electron?

    asked by VJC
  47. physics

    An electron starting from rest acquires 4.20 keV of kinetic energy in moving from point A to point B. How much kinetic energy would a proton acquire, starting from rest at B and moving to point A? Determine the ratio of their speeds at the end of their

    asked by VJC
  48. Math

    How is the number of zeros in the quotient in 180 divided by 8 equals 20 related to the bumber zeros in the dividen?

    asked by Matthew
  49. Science

    in plants the process that happens when sugars break down and give off energy is called

    asked by Brian
  50. physics

    Vector A has magnitude 3.6 units; vector B has magnitude 5.9 units. The angle between A and B is 45degrees. What is the magnitude of A + B?

    asked by Ahson
  51. Physics

    In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 14.8 m/s at an angle of 34.1° above the horizontal. How long does it take for the ball to reach the wall if it is 4.10 m away? How

    asked by Morgan
  52. Economics

    How might government intervention improve social welfare by reducing consumption of alcohol?

    asked by Laura
  53. physics

    A surveyor measures the distance across a straight river by the following method. Starting directly across from a tree on the opposite bank, she walks d = 72 m along the riverbank to establish a baseline. Then she sights across to the tree. The angle from

    asked by mo
  54. physics

    How long does it take an automobile traveling in the left lane of a highway at 65.0 km/h to overtake (become even with) another car that is traveling in the right lane at 40.0 km/h when the cars' front bumpers are initially 80 m apart?

    asked by Anonymous
  55. biology

    In which generation does meiosis occur in the animal life cycle?

    asked by Danielle
  56. physics

    Your electronic friend needs a 20 ohms resistor but has only 40 ohms resistor. He tells you that he can combine them to produce a 20 ohms resistor? How?

    asked by Christy
  57. algebra trig honors

    x squared minus four thirds x plus four over nine

    asked by jasmine lopez
  58. 12th Grade Maths

    express in as simple a form as posible?? (2x^3y^-1)^3

    asked by jim
  59. algebra2

    How to put this in a quadratic equation ax squared + bx + c = 0

    asked by sandy
  60. fractured math definitions

    a delicious dessert

    asked by dessert
  61. Physics (Oscillation)

    If a particle moves in simple harmonic motion with a frequency of 3.00 Hz and an amplitude of 5.00 cm through what total distance does the particle move during one cycle of its motion, what is its maximum speed, where does this maximum speed occur and what

    asked by James
  62. chemistry

    14 carat gold has a purity of 58.3%. how many moles of gold are in 155 grams of 14 carat gold? answer in units of moles.

    asked by Jordyn
  63. Biology

    What are five specific examples of Interdependence from the book "Silent Spring" by Rachel Carson? OR What are examples of steps in the scientific process found in "Silent Spring"?

    asked by Andrea, please help!
  64. math

    state the restrictions on the variables x/x-y would the restrictions be x be 1 and y be zero

    asked by prethy
  65. Algebra 116

    I am having problem with this one you are going to help a neighbor build a ramp so he can easily go into his house in a wheel chair In order to meet federal guideline the ramp must not rise mor than 1 foot over a horizontal distane of 12 so would my answer

    asked by Sydney
  66. trig

    2tanx = 3=0

    asked by Thule
  67. Biology

    I need help with a couple of questions. I have included what I think the answers are. Could you let me know how I did? 1- A woman who recently came home from a tropical vacation now has abdominal pain and diarrhea. Her blood test results show an elevated

    asked by BB
  68. Math

    Find the value of the following. 10^(-10log3) The log exponent is confusing me. Could someone please help me? Thanks.

    asked by Ed
  69. Math

    Genral solution of: 2tan x + 3=0 Solve for x if: 2tan x +3 =0 and x E[-180;180]

    asked by Thule
  70. algebra

    on one day the value of $1.00 was equal to 0.77 euro or $1.24 Canadian. Write a function to represent the value of Canadian dollars in euros. What is the value of th efunctoin for an input of 5 rounded to the nearest cent, and what does it represent

    asked by Jessica
  71. Math

    How could I find the mean of each set of numbers which is 21,25,27,32,36,37,43,43,44,51 How can I find the median of each set of numbers which is 26,71,33,69,71,25,75 And also how can I find the mode of each set of numbers 9,8,10,9,9,10,8

    asked by kiki83
  72. 9th Grade Algebra

    Okay, I just need the steps for simplifying this type of radical: 5 -- 3√2 thats all one problem. thanks!

    asked by Kendra
  73. geometry

    Find the measure of each exterior angle of a reguler 11-gon. round your answer to two decimal places if neccesary?

    asked by aaron
  74. physic basics

    Use the fact that the speed of light in a vacuum is about 3.00 x 10^8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly 1.7 hour(s). i converted 1.7 hours to secs but im stuck there and i don't know what to do for the rest

    asked by Alex
  75. Chemistry

    If you are making 180.0 mL of 3.00% (m/m) CuSO45 H2O, how many grams of the solute should you use? I can't figure out what to do with the percent.

    asked by Megan
  76. Math

    I'm not sure how represent radicals, but here is the problem: -(sq root)-76 + (sq root)-125 It is my understanding that negative numbers do not have real-number square roots, so does that mean that this whole expression does not exist as a real number or

    asked by ASD
  77. Chemistry

    If you are making 430.0 g of 0.41 m Na2SO3, how many grams of the solute should you use? I got 20 grams, but I don't think this is the right answer.

    asked by Tiffany
  78. Statistics

    Find each uniform continuous probability. a. P(X < 10) for U (0, 50) b. P(X > 500) for U (0, 1,000) c. P(25< X < 45) for U(15, 65)

    asked by Shon
  79. chemistry

    how to balance ZnO+2HCl yields ZnCl2+H2O

    asked by jason
  80. Chemistry

    Which of the following statements about boiling points are false: A. the boiling point of 0.1 m KF(aq) is lower than the boiling point of 0.1 m ethanol(aq) B. the boiling point of a 0.5 m aqueous solution of NaOH is the same as the boiling point of a 0.5 m

    asked by Timothy
  81. chemistry

    Which of the following volumes are equivalent to 125 cm3? 1.25 dL 125 mL 0.0125 L

    asked by Danielle
  82. fractured math definitions

    what a person should when it rains

    asked by when it rains
  83. Algebra 2

    Write an equation in slope-interept for, for the lnie that satisfies each set of conditions. 8. passes through (-2, 1), perpendicular to the line y=4x - 11 Help! not sure where to even begin.

    asked by Mandy
  84. English

    How would you write this as a topic sentence so it sounds like a theme for a book. The author is great at making someone who has a handicap or disability not feel so abnormal but a benefit to society.

    asked by Hannah
  85. Physics

    Determine the percent uncertainty in È, and in sin È, when (a) È = 15.0° + 5°, (b) È = 75.0° + 5°

    asked by Tom
  86. Statistics

    Find each uniform continuous probability and sketch a graph showing it as a shaded area.. If you please show me how you got the answer I would really appreciate. a. P(X < 10) for U (0, 50) b. P(X > 500) for U (0, 1,000) c. P(25< X < 45) for U(15, 65)

    asked by Shon
  87. College Basic Math

    1 4/7 divided 4/10,then reduce to lowest terms

    asked by Kimberly
  88. fractured math definitions

    A group of notes

    asked by Alisha
  89. Business

    What are the benefits of buying stock from a company? I would like to know this for the future.

    asked by AL 92
  90. Physics

    Calculate the magnitude of the electric field at the center of a square with sides 22.4 cm long if the corners, taken in rotation, have charges of 1.02 μC, 2.04 μC, 3.06 μC, and 4.08 μC (all positive).

    asked by VJC
  91. Math 10 (Restrictions)

    restriction of x/x-y ANSWER: would x be 1 and y be 0??

    asked by prethy
  92. science

    Population distribution describes the ________.? a) immigration of people from one nation to another b) wanderers who move from place to place c) relation of people to the physical features and to each other d) migration of people from one geographical

    asked by pam
  93. physics

    Why is it that a computer monitor or a TV screen can produce millions of colors using only the 3 primary additive colors? Likewise, how can a printer print millions of color using only the colors of magenta, cyan, and yellow? How are the primary additive

    asked by Anonymous
  94. english

    could somebody help me unscramble these letters? aicjam it's a product found in the grocery store.

    asked by kay
  95. Health

    I was wondering if anyone could help me with these questions. I have put what I feel are the correct answers. Please let me know if I did ok & thanks. 1- A woman who recently came home from a tropical vacation now has abdominal pain and diarrhea. Her blood

    asked by BB
  96. algebra

    Can anyone tell me where I can go to find a better understanding on how to solve this type of problem: (-7,2); 3x=2y+9. what is the equation of the line is y=() simplify the answer using integers or fractions.

    asked by Amanda R
  97. Chemistry: Compound

    1) ZnSO4 would it be Zn(SO4) does the polyatomic ion always have to have ( ) ? 2) Is Ba(SO4) right? since Ba is 2+ and SO4 is 2- right? 3) In a net ionic equation for BaCI2 would it become Ba ^(2+) + 2CI or Ba ^(2+) + CI2 ?

    asked by Amy~
  98. grade 6 math

    I have a input and output machine . The input number is 5 and the output number 4. the second input number is 10 and the output is 5. I am having a hard time finding the operation. Can some please help thanks

    asked by ashley
  99. biology

    what are the advantages of beginning with RNA versus DNA?

    asked by Gordon
  100. chemistry

    What happens to p- toluidine at 225 degres?

    asked by Giyom
  101. Science

    An airplane flew a distance of 650 km at an average speed of 300km/h. How much time did the flight take?

    asked by David
  102. Physics

    What average force is required to stop an 1700 car in 7.0 if the car is traveling at 75 ?

    asked by Ariel
  103. chemistry

    Identify the ions present in KClO4. The answer is K+ and ClO4- how do you know this?

    asked by Danielle
  104. Physics

    What average force is required to stop an 1700 kg car in 7.0 s if the car is traveling at 75 km/h?

    asked by Ariel
  105. 5th grade

    c+3c=32

    asked by rylan
  106. algebra

    Evaluate the logarithmic equation for three values of x that are greater than -1, three values of x that are between -2 and -1, and at x = -1. Show your work. Use the resulting ordered pairs to plot the graph; submit the graph via the Dropbox. State the

    asked by Marlee
  107. math

    One year, China consumed 4 times as much energy as Brazil.Define a variable and write an expression for the amount of energy China used that year.

    asked by Jamie
  108. Math

    f(t)=A[u(t)-u(t-10)], where u(t) is the unit step function. Is the energy of this signal finite? Why or why not? If it exists, find the energy of this signal.

    asked by Matthew
  109. math

    The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium.

    asked by Harper
  110. math

    6d-3d+2d=35

    asked by rylan
  111. math

    Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun.

    asked by Tammy
  112. algebra

    I need help sovling this. It is a fraction. +5/x-1 + 2-x/x I hope that you can understand what I wrote. Someone please help because I am new at this. Help!!!!

    asked by paulina
  113. human resources

    What do you think are the challenges in working with clients in late adulthood?

    asked by RT
  114. English

    How do I write a paragraph without using any nouns?

    asked by Milki
  115. geometry

    3n-1=5n-9

    asked by lindsay
  116. social studies

    What is another name for the peninsula nicknamed The Northern Neck?

    asked by Brooke
  117. math

    6-3a/2=-6

    asked by lindsay
  118. math

    c/7+2=1

    asked by hjdfisal
  119. math

    -1/2(16-2h)=11

    asked by hjdfisal
  120. english

    I need help writing a speech about saving energy to 6th graders

    asked by debb
  121. math

    1+j=2(2j+1)

    asked by molly
  122. math

    The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

    asked by Samantha
  123. algebra

    44=5g-8-g

    asked by HELP MEEEEE :(
  124. college chemitsry

    calculate the calories needed at 0 C to melt 200. g of ice

    asked by Amanda
  125. Algebra

    I am having a hard time with this problem 3. You are going to plant trees in your hilly backyard. Tree A is located at coordinates (1,2) and Tree B is located at (3,12). What is the slope of the hill between the two trees? Show how you arrived at your

    asked by Sydney
  126. geometry

    raise pq and qr are perpendicular point s lies in the interior of angle pqr if measure of the angle pqs equals 4=7a and the measure of angle sqr = 9+4a find the measure of angle pqs and sqr

    asked by jj
  127. Music Theory

    I need help identifying the meter of each song (which I am having a hard time identifying them) below as Duple, Triple, Quadruple, or Quintuple Meter. Note: I did listened to the songs. 1. War - "Low Rider" 2. Hugh Masekela - "Grazin' in the Grass" 3. Dave

    asked by Cassie
  128. math

    One year, China consumed 4 times as much energy as Brazil.Define a variable and write an expression for the amount of energy China used that year.I don't get the variable part and expression. Not the same person.

    asked by Josh
  129. Math!!

    restriction of x/x-y ANSWER: would x be 1 and y be 0??

    asked by prethy
  130. spanish

    how do i make a sentence using ir + a + infinitivo?

    asked by Anonymous
  131. math

    The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

    asked by Ricky
  132. Chemistry

    1.50 liters tank filled with helium at 125 atm is used to fill balloons. The pressure in each balloon is 950 torr and the volume of each is 1.20 liters. How many ballons can be filled?

    asked by Alex Yoo
  133. joseph george

    what is the variable of 4d

    asked by deven
  134. math

    Saturn is 6 times further from the Sun than Mars. Define a variable and write and expression for the distance of Saturn from the Sun. Not the same person

    asked by James
  135. math

    Melissa collected three kinds of autumn leaves when she was out walking today-elm, maple and oak. She has 2 times as many maple leaves as elm leaves and 5 times as many oak leaves as elm leaves. Altogether she has 32 leaves how many of eash kind does she

    asked by rylan
  136. english

    "Taking the bus is one way of reducing noxious emissions." In this sentance, the word "noxious" means: a)awkward b)harmful c)strange d)unpleasant I'm stuck between b and d. help please?

    asked by rebecca
  137. 2nd grade

    Sam lives 5 miles from school, Joe lives 2 miles from school, and Ady lives 1 mile from school. What is the range of the miles the boys live from school?

    asked by Leelee
  138. Chemistry

    Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?

    asked by Diana
  139. math

    I can't find the variable and expression for the poulation of oakland. Here's something to help you with Oakland, California is 5,417 less than the poulation of omaha, nebraska.

    asked by Bob
  140. chemistry

    In the course of research, a chemist isolates a new compound with an empirical formula C3H3O2. 4.97 g of the compound when dissolved in 100. g of water produces a solution with a freezing point of −0.325°C. What is the molecular formula of the compound?

    asked by Diana
  141. english

    why is a chemically sensitive person not able to build an immunity to perfume? what does "immunity" mean?

    asked by rebecca
  142. English

    1. Based on the sketches he drew outside, Degas painted in his studio. 2. As/While he was based on the sketches he drew outside, Degas painted in his studio. 3. When he was based on the sketches he drew outside, Degas painted in his studio. 4. Because

    asked by rfvv
  143. calculus

    Use Newton's method to approximate a root of the equation 3sin(x)=x as follows. Let x1=1 be the initial approximation. The second approximation x2 is and the third approximation x3 is I got x2=-1.454 but can't get x3 :(

    asked by HELLLLLPPPPPPP
  144. chemistry

    IF 10ml of H2SO4 is need to neutralize 20ml of 1N NaOH, how many milliliters of H2SO4 is needed to make 1 liter of 11M solution?

    asked by sp
  145. chemistry

    The complex [Cr(H2O)4Cl2]? contains Cr(II). What is the charge on the complex?

    asked by darali
  146. physical science

    suppose one of your test tubes ha a capacity of 23 mL. you need to use about 5 mL. of a liquid. describe how you could estimate 5 mL

    asked by CAMILA
  147. chemistry

    One liter of approximetely 0.25N HNO3 has been prepared. Upon titration it was found that 5.0 ml of the acid required 11.0 ml of 0.10N NaOH for neutrality. How much concetrated HNO3 at 15.8N must be added to one liter to make it exactly 0.25N?

    asked by sp
  148. chemistry

    What is the coordination number of [Pt(NH3)4]2+

    asked by darali
  149. science

    one way of describing population distribution is the number of people per area, but it can also refer to a)the hybridization composition of the people b) the age distribution of the people c) the political composition of the people d) the hydrographic

    asked by pam
  150. Algebra Help

    Okay, I just need the steps for simplifying this type of radical: 5 -- 3√2 thats all one problem. thanks!

    asked by Kendra
  151. diveristy

    what are big issues on immigration

    asked by betty
  152. 5th grade

    what number is 10,000 less than 337,676?

    asked by char
  153. math

    I forgot how to solve this grade 11 review package question 5) A graph representing the vertical height in metres after t seconds, has been modelled by the equation f(t)= -4.9t^2+6t+0.5. a) how long is the ball in the air? b) when does the ball reach its

    asked by prethy
  154. math

    A piece of wire was used to make 3similar squares, each of side 3.5 cm.What was the lenght of the wire?

    asked by byy
  155. english

    HELP PLEASE!!??what does the question mean by Compare the event to one or more similar events. When comparing, use at least three comparatives and three superlatives? Use at least five adverbs and five adjectives to write a brief review of a movie,

    asked by smb
  156. 9th grade science

    Describe the ways in which the earth's spheres overlap each other?

    asked by peyton
  157. Calculus

    Use mathematical induction to prove that each proposition is valid for all positive integral values of n. 5^n + 3 is divisible by 4.

    asked by Vincent
  158. North & Central America

    what are two ways to describe a location

    asked by devin
  159. Economics

    The role of an assumption in an economic theory is to: a. add realism b. prove the theory c. cover special cases d. simplify the theory

    asked by Jessica
  160. Math

    construction of a trapezium ABCD in which AB=8cm, CD=5cm, angle DAC=70 degree, angle ABC=50 Degree and AB is Parallel to CD

    asked by Afzal
  161. english

    HELP PLEASE!!?? Use at least five adverbs and five adjectives to write a brief review of a movie, sporting event, musical performance, or television show. Bold each adverb. Underline each adjective. Compare the event to one or more similar events. When

    asked by smb
  162. ap chemistry

    2.70 g/cm3 to pounds per cubic foot could you please show me the steps

    asked by mike
  163. English

    I'm having an hard time coming up with an thesis statement for this question? What is the significance of the play title Trifles?How does it relate to the author's overall theme? can you help me

    asked by Shun
  164. 2nd Grade Math

    Craig reads a book with 10 pages in the morning, a book with 26 pages before dinner, and a book with 10 pages after dinner. Find the mode of the number of pages in the books that Craig read.

    asked by Leelee
  165. physics

    Vector A has magnitude 3.87 units; vector B has magnitude 5.63 units. The angle between A and B is 60.0°. What is the magnitude of A and B?

    asked by monica
  166. spanish

    what spanish speaking country in africa

    asked by katherine
  167. 9th grade science

    Describe the ways in which the earth's spheres overlap each other?

    asked by peyton
  168. math

    The temperature dropped from 37 degrees C from the high temperature to read a low of-8 degrees C. What was the high temperature?

    asked by Jen
  169. spainsh

    what Hispanic country is an Associated State of the United States

    asked by katherine
  170. business

    give the business the following does Carlos Slim ,Bill Gates & Warren Buffet

    asked by trevain
  171. College Chemistry

    If the water initially has a temperature of 28, how many kilojoules of heat must be removed to cool and freeze the water at 0?

    asked by Becky
  172. sociology

    Using sociological imagination, analyze the scenary: Susy is a sophomore in college and get pregnant. Her boyfriend end up the relationship. Susy now drop all her classes

    asked by Jenny
  173. spanish

    Name the Hispanic country under a Communist Regime

    asked by katherine
  174. Algebra 116 Help Please

    1) Your are planning to spend no less than $8000.00 and no more than $12,000 on your landscape project a) Write an inequality that demonstrates how much money you will be will to spend on the project B) Suppose you want to cover the backyard with the

    asked by Sydney
  175. math

    2x-5/3 - 3x+4/4 >/5

    asked by renee
  176. Algebra 116 Help Please

    Buying a Home For most people, buying a house is a great investment that can offer security in an uncertain world, but buying a house is also a commitment. Application Practice After putting your name on this document, above, answer the following

    asked by Sydney
  177. math 116 Help Please

    1. Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: C(g) = 3.5 (g) a) Find C(2) (2 pts.) b) Find C(5) (2 pts.) 2. Suppose that the linear

    asked by Sydney
  178. algebra

    express in as simple a form as posible?? (2x^3y^-1)^3

    asked by Anonymous
  179. Algebra

    Using only the number 1,2,3,4, construct a math expression that equals to the number 34. You must use all four numbers in this equation. What is the answers?

    asked by Malayna
  180. science

    Is color a property or a mass?

    asked by mariah
  181. English

    Thank you very much for your corrections. Actually, I'm realising that a lot of Italian books for learning English contain mistakes! 1) Even good men can behave badly if there isn't anything to eat. 2) Fill in the blanks with the suitable word (or a

    asked by Franco
  182. Chemistry

    1.)Convert: 2.6g to 6.73g F 2.)7.61 g of potassium(K) reacted with 14.6g of chlorine(Cl) to form the compound Kcl. What mass % of the compound is due to Potassium?

    asked by Jennifer
  183. physics

    a 1.50 kg. water is inside a cylindrical jar 4 cm. in diameter. what is the pressure at the interior bottom of the jar?

    asked by weng
  184. chemistry

    Suppose you are given a list of solutions (all with nonvolatile solutes) and their concentrations. You pick out the one with the lowest freezing point. It should also have (pick all that apply): the lowest boiling point the highest osmotic pressure the

    asked by Megan
  185. algebra

    if A= {xlx is odd} amd B={xlx>7} list the elements of A union B

    asked by katie
  186. algebra 1 (RP)

    7x+(-11)

    asked by pierce
  187. spainsh

    the worlds largest capital city and the country where it is located

    asked by katherine
  188. English

    Thank you for your suggestions. Here is part of the exercise. 1) I b.. the newspaper every day. 2) Can you p... me the salt, please? 3) He knows all the a...... (Instructions: fill in the blanks with a suitable word. The initial is already given. (Does it

    asked by Franco
  189. spanish

    Name four non-Hispanic countries in South America

    asked by katherine
  190. human resource

    How do regular consultations between managers and their subordinates impact productivity and job satisfaction

    asked by Anonymous
  191. Math

    Okay, I just need the steps for simplifying this type of radical: 5 -- 3√2 thats all one problem. thanks!

    asked by Kendra
  192. science

    what is the scientific notation for 280 mm?

    asked by josh
  193. college physics

    what is the mass of an 80 ml. acetone when the density of the acetone is 0.792 g/ml.?

    asked by weng
  194. spanish

    Name the non-Hispanic country that shares an island wih a Hispanic country

    asked by katherine
  195. Geography

    Hi, I have to wright a full page SA on how geography effects me. Please help!

    asked by Hailey
  196. algebra... help soon please

    i cannot figure any of this stuff out. please help. if you can there are 15 more of these... 1. Simplify 5 + (7-1)2/6 A11 B41/6 C51/6 D7 E17/6 F23 2. Simplify (26/2 + 33)/(23) A11/3 B5 C20/3 D8 E6 F131/8 3. Simplify [7+2(5 - 9)2]/[(4+1)2 - 3(22)] A-23/2

    asked by whitney
  197. math

    if a+b=c and c=8 and d+e=f and f=21 e=18 d=3 and e,d,c,and b are in a circle that sum is 20 what is the answer

    asked by bianca
  198. algebra

    sooo confusing... 6. (¼ + 7/8)(9/13) A81/13 B17/104 C81/104 D17/29 E17/13 F17/25 7. [6(2+1) -6(1+1)] / [6(4-2) - 22 ] A3/2 B3/4 C3/5 D3 E1/3 F2/3 8. -3(y – 5) - (-2y + 1) A-y +14 B5y - 4 C-5y + 14 D-13y E-5y -6 F-y – 4 For problems 9 – 15 let a = 2,

    asked by whitney
  199. Chemistry: Solubility ?

    There are solubility rules and for soluble compounds some have exceptions next to them. Such as Halides are soluble Exception: Ag, Hg, Pb What does it mean by exception? For Halides would it be, that if the compound was AgCI it wouldn't be soluble?

    asked by Amy~
  200. college physics

    a glass container was filled with oil with a density of 0.80 g/cm^3 up to 9 cm. in height. 1) what is the pressure at the base of the container? 2) what is the depth if 3 cm. from the surface of the oil? 3) what is the depth if 4 cm. above the base?

    asked by weng
  201. science

    how can i make an Auto-Off Candle by Lisa Marie Wright?what is the materials included?

    asked by kathleen
  202. English

    Can you check these sentences for me, please? Thank you very much. 1) Marlow is presented as a professional soldier who is more comfortable at sea than on land. 2) He does not only like telling stories but also understanding the people in the stories and

    asked by Franco
  203. English

    What is the main idea of this? Please help-I'm terrible in english- Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to

    asked by Samantha
  204. chemistry

    the most common english unit of mass is the pound avoirdupois. what is one troy pound in kilograms and in pounds?

    asked by mathew
  205. english

    I would appreciate your help. I was asked to write a paragraph describing someone's appearance in way that reveals their character. So far this is what I came up with. Tell me what I am missing please. Thanks. Near by the yard, there set a low spirited

    asked by Amy
  206. English

    Could someone help with the main idea of this paragraph? Please and thank you Old Man Warner snorted. 'Pack of crazy fools," he said. "Listening to the young folks, nothing's good enough for them. Next thing you know, they'll be wanting to go back to

    asked by Joel
  207. algebra

    Evaluate the exponential equation for three values of x greater than -4, three values of x smaller than -4, and at x = -4. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph y=3^x+4+1

    asked by allice
  208. calculus

    A point in the first quadrant lies on the parabola y = x^2. Express the coordinates of P as function of the angle of inclination of the line joining P to the origin

    asked by kim
  209. English

    Please help me interpret this-I'm in 8th grade and I don't have any idea: What is the main idea? Read the following quote from Thomas Paine's pamphlet, Common Sense. Summarize the main idea of the passage. "Some writers have so confounded society with

    asked by Erik
  210. English

    How can I rewrite this? Please. He liked shooting things. (A). and wrestling with his father. (B) hammering things, smashing things. Joy leapt in his fathers heart for his son. (A) thirsty for knowledge (B) Who was quick to learn. They stood. (A) In the

    asked by Lily
  211. macro

    Suppose that the position of a nation's long-run aggregate supply curve has not changed, but its long-run equilibrium price level has increased. Which of the following factors might account for this event? a. A rise in the value of the domestic currency

    asked by amber
  212. algebra

    Need Help! 1/2x - 7 = -4;6

    asked by mike
  213. chemistry

    1) A 3-fold degenrate subshell can carry a maximum number of how many electrons?

    asked by kabelo
  214. english

    Hey, I have to wright a SA on what I want to learn in English language arts this year. It's a full page SA and I'm in 7th grade. Please help me, Ive ben working on it bacicaly ever since I got home. I need help, PLEASE!!!

    asked by Taylor
  215. macro

    This year, a nations long run equilibrium real gdp and price level both increase. which of the following combinations of factors might simultaneously account for both occurances? a. an isolated earthquake at the begining of the year desroyed part of the

    asked by aimee
  216. English

    Some islands are of the coast of Californa. What is th sbject and prepositio in this sntence?

    asked by Alex
  217. SPANISH!!!! articles and all that good stuff HELP!

    ¿Cuales artículos corresponden con las siguientes palabras? (Which articles correspond with the following words? Watch out for gender exceptions. Please re-write the following nouns preceded by the correct article. 1. ____ perro 2. ____ ventanas 3. ____

    asked by whitney
  218. science process

    I don't no what I must do here: You observed something strenge. You noticed that your pet plant Bob is leaning toward the window in your room. He has been growing toward the window for some time and you wonder why he is doing that. 1.What process will you

    asked by Simone
  219. 2nd grade

    problem solving reasonableness

    asked by Anonymous
  220. Physics

    Heather and Matthew walk with an average velocity of 0.98 m/s eastward. If it takes them 34 min to walk to the store, what is their displacement?

    asked by Jasmine
  221. Physics

    A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 24 min. Then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last? what is the

    asked by Jasmine
  222. calculus

    the base of a triangle is 2 cm shorter than the width of a rectangle. The rectangle's length is 4 times its width and the triangle's height is the same as the rectangle's length. find the area of both figures if the difference of the two areas is 30cm2

    asked by Anonymous
  223. com155

    can someone please review my answers to the questions below and let me know if they seem correct? Review the four paragraphs below. There is one paragraph matching each of the following types: summary, analysis, synthesis, and evaluation. Once you have

    asked by chris
  224. Physics (Calc Based)

    I understand how to solve this problem ,however cannot figure out why the .5 degrees is being converted to radians: PROBLEM: How would one determine the percent uncertainty in theta and in sin of theta for the following: 1) theta = 15.0 degrees +/- 0.5

    asked by Tom
  225. Organic Chemistry

    What is the smallest volume (in milliliters) of boiling water the student could use to dissolve the 3.88 g sample of phthalic acid?

    asked by Anonymous
  226. Physics

    1.) Describe the proper way to use a meter stick and why this technique is necessary (include an explanation of uncertainty). 2.) What is the difference between percent error and standard error?

    asked by Phil
  227. Microscope

    If the eye peice magnifies 10X and the medium power lens mignifies 30X what is the total magnification? EMILEIGH

    asked by Emileigh
  228. Basic Chemisty-Anatomy

    I need to draw structural models of atoms with stable molecules using a diagram for H20, C2h6, NH3, and C2H4o2. Since we cannot bring home our books, and I cant seem to find the answers to my questions online, How am I supposed to see an example? Can you

    asked by Spring
  229. Math 156

    Allen was earning $30,000 working for a small business. The business had a bad year, and Allen eas asked to take a 10% cut in pay with the assurance that he would receive a 10% increase in salary the following year. If allen agreed, what would his salary

    asked by Tremaine
  230. algebra

    How do you factor 4u^2-w^2 because I havent been able to do it? Can someone help with this?

    asked by paulina
  231. college physics

    a glass container was filled with oil with a density of 0.80 g/cm^3 up to 9 cm. in height. 1) what is the pressure at the base of the container? 2) what is the pressure if depth is 3 cm. from the surface of the oil? 3) what is the pressure if depth is 4

    asked by weng
  232. world history

    Compare the Freedom Charter with the United States Constitution. What rights and guarantees does the Charter call for that are different from those in the Constitution?

    asked by ryan
  233. government

    A colony of a country that followed mercantilism during the 17th century would NOT be encouraged to develop __________.

    asked by Anonymous
  234. physics

    vector A has a magnitude of 57 m and points in a direction 20 degrees below the positive x axis. vector B has magnitude of 70 m and points in a direction 57 degrees above the positive x axis. Find the magnitude of the vector D = A-B.

    asked by Joanna
  235. physics

    model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 1.00 m/s2 until its engines stop at an altitude of 130 m. (a) What is the maximum height reached by the rocket? m (b) How long

    asked by harry
  236. chemistry

    2.70 g/cm3 to pounds per cubic foot

    asked by kelly
  237. Physics

    A red car and a green car, identical except for color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at x sub r = 0 and the green car is at x sub g = 220m. If the red car has a constant velocity of 20km/h,

    asked by Scott
  238. math

    1. A number leaves remainder 6 when divided by 10. What is the remainder when the number is divided by 5? Justify your reasoning.

    asked by len
  239. geometry

    Rays PQ and QR are perpindicular. Point S lies on the interior of angle PQR. If m

    asked by Josh
  240. social studies (latitude & longitude)

    what is the city and continent name of these : 34° S and 58° W 34° S and 18° E 51° N and 0° 30° N and 31° E 40° N and 2° W 36° N and 4° W °°°° Please please help ! i have been trying to find the answer to these for a long time but i just

    asked by Eliza
  241. human georgraphy

    what is the verbal scale for the menan buttes map? I could not find it. thanks!

    asked by natana
  242. Organic Chemistry

    A student purified a 3.88 g sample of phthalic acid by recrystallization from water. The published solubility of phthalic acid in 100 mL of water is 0.54 g at 14ºC and 18 g at 99ºC. What is the smallest volume (in milliliters) of boiling water the

    asked by Anonymous
  243. statisics

    In a battleground state, 40% of all voters are Republicans. Assuming that there are only two parties - Democrat and Republican, if two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your

    asked by Anonymous
  244. Weather & Climate (science)

    1. an insturment used to measure air pressure is a(an)___________________________________.

    asked by Dani
  245. math

    The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

    asked by Martin
  246. Physics

    Whatis the volume of a piece of iron (p= 7.9g/ cm cubed) that has a mass of 0.50kg?

    asked by Bird
  247. 7th grade math

    what are consecutive whole numbers?

    asked by alik
  248. 7th grade

    What are some of the common functions of a structure?

    asked by Sakaana
  249. math

    andy and kate are running around a 400 meter track. if they run in the same direction. andy will pass kate in 100 secounds. if they run in the opposite direction they will meet in 25 seconds. what is andys velocity in meters per seconds?

    asked by Bob
  250. algebra

    Why is 4(x+2)+4x=8 not a correct equation to solve a geometry problem if x represents a length of measurement?

    asked by Anonymous
  251. math 10

    3X/x^2+ 5 state the restriction ANSWER: would it be x is all real numbers??

    asked by prethy
  252. algebra homework

    I am having problems with fatoring this problem.Please help. 3x-22xy-16y^2

    asked by kenneth
  253. physics

    From her bedroom window a girl drops a water-filled balloon to the ground, 4.3 m below. If the balloon is released from rest, how long is it in the air? How would you do this?

    asked by John
  254. Physics

    Calculate the answer for the following question and state the answer with the correct certainty and units. Given the values of b and h, find A. b=3.2 cm, h=10.1 cm A=1/2bh The answer is 16 cm^2, which was rounded to two significant digits from 16.16

    asked by Emily
  255. 9th Grade Biology

    How do macromolecules carry out the function of life?

    asked by Cecilia
  256. science

    The fact that New York City has over 250 people per square mile means that ______? a) the people live in crowded conditions b) clean sir becomes a problem c) many of the people live in multiple family housing units d) cramped living leads to higher crime

    asked by pam
  257. Math

    How many ways can one get 60 cents using only three coins and no 50 cent piece?

    asked by Jill
  258. 9th grade biology

    How do macromolecules carry out the function of life within a cell?

    asked by Cecilia
  259. math

    -4+?=0

    asked by nicole
  260. Physics

    The problem contains graphics that I don't know how to show other than in an image format: h t t p : / / b i t . l y / c D H P V M h t t p : / / b i t . l y / 9 m b y C R

    asked by URGENT
  261. chemistry

    2.70 g/cm3 to pounds per cubic foot

    asked by mike
  262. Weather & Climate (science)

    1.A(an)_________________ barometer Has a closed space surrounded by metal 2.A(an)_________________ barometer Has a glass tube that is open at the bottom end. ive been tryin thesse for ever! when awncering put like for example ur goi no awncer #1 put 1.

    asked by Dani