Questions Asked on
June 12, 2011

  1. chemistry

    An aqueous solution is 22.0% by mass silver nitrate, AgNO3, and has a density of 1.22 g/mL. what is the molality of silver nitrate in the solution?

  2. College Physics

    100 grams of molten lead (600oC) is used to make musket balls. If the lead shot is allowed to cool to room temperature (21oC), what is the change in entropy (in J/K) of the lead? (For the specific heat of molten and solid lead use 1.29 J/g oC; the latent

  3. physics

    a stone falls from a cliff and travels 34.3m in the last second before it reaches the ground. calculate the height of the cliff.

  4. COLLEGE ALGEBRA

    A bank loaned out $120,000, part of it at a rate of 8% per year and the rest at the rate of 12% per year. if the interested received totaled $11,000, how much was loaned at each rate?

  5. physics

    Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid of area 0.25 m^2 is filled with water. Along, thin tube of cross-sectional area 5.5×10−5 m^2 is inserted into a hole at the

  6. math

    FIND THE MODULO CLASS TO WHICH THE NUMBER BELONGS FOR THE GIVEN MODULO SYSTEM 53 mod 12

  7. Algebra

    In 1992, the life expectancy of males in a certain country was 63.8 years. In 1999, it was 66.0 years. Let E represent the life expectancy in year t and let t represent the number of years since 1992. The lineahntthe nearest ter function E(t) that fits the

  8. Physics

    When driving west toward the Rocky Mountains, you see a peak 3.0 above the horizon. Your GPS gives your current elevation as 1630 , and according to the map, you're 28.5 (horizontally) from the peak. Find the peak's elevation

  9. Chem

    how do you find the boiling temp of 2m of c6h12o6

  10. pre calculous

    use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms. show your work ln x^2/y^3 Assuming x,y AND z are positive use properties of logariths to write the expression as a single logarithm

  11. chemistry

    How many mL of a 4.7 M HNO3(aq) solution are required to make 500 mL of a solution with pH=2.10

  12. maths

    lisa won the lottery she used 1/2 of her lottery win to buy a house she gave 1/6 of her lottery win to charity lisa then shared the remainder of her lottery win equally amongst her 4 children what is the fraction of lisa's lottery win that each of her 4

  13. chemistry

    How could you separate lauric acid from a-naphthol?

  14. Algebra

    Write the number in the form a+bi sqrt(-4) + 10 ????? Please help!

  15. computer

    construct function prototypes for descriptions given below: 1) Rarb() takes no arguments and has no return value. 2) Mains() takes a float argument and returns an int. 3) San() takes two double arguments and returns a double. 4) Sum() takes an int array

  16. math

    Divide a clock face with 1 straight line so that the sum of the numbers in each part are equal.

  17. Pre-Cal

    The population of Las Vegas, Nevada in 2000 was 478,000 and is increasing at the rate of 6.28% per year. At this rate, when will the population reach 1 million people? a)1.51 years b)2.32 years c)12.12 years d)10.84 years

  18. physics

    aball is thrown vertically upward with a speed v from a height h above the ground. find the time taken for the ball to strike the ground.(consider acceleration due to gravity =g)

  19. trig

    how high is a tree that casts a 30 ft shadow at the same time a 10 ft pole casts a shadow which is 10 ft long?

  20. Algebra

    A chess board has 64 squares. If pieces occupy 19 squares, how many squares are unoccupied?

  21. Math

    How do you put 33/10 & 29/6 into mixed numbers????!:)????!(:????!(:????!(:

  22. Algebra

    How do I solve this? 125x^3 + 343 = 0 Please help me!

  23. Cultural Diversity

    The instructional strategy that works best to give a child from a culturally different background a sense of security and mastery is: recounts. repetition. using an intermediary. eventcasts. i say repetiton.

  24. health

    how to set up a proposal for do preemployment physicals for 60 bus drivers

  25. social studies

    explain the different aspects of life in which women are discriminated in India??

  26. physics

    Factory Worker A is exposed to a sound of a constant intensity of 6.30 × 10–4 W m–2 at a distance of 1.00 m from a noisy machine. The frequency of the sound is 4.00 kHz. (a) What is the sound level in decibels (dB) of this sound? (b) By what factor

  27. pre calculous

    solve each equation algebraically and check it by substituing into the orignall equation. 50e^0.035x=200 3LN(x-3)+4=5 Method of your choice by solving. logx^2=6 Logx^4=2 2x-2^-x/2=4 e^x+e^-x/2=4 500/1+25e^.3x=200

  28. chemistry

    calculate the molar mass of glucose and the no. of atoms of each kind in it.

  29. Physics

    Vector A points in the negative direction. Vector B points at an angle of 35.0 above the positive x axis. Vector has a magnitude of 10 and points in a direction 46.0 below the positive x axis.

  30. College

    Shantisha Brown SC543-01 Article Critique 1 Mindes, !@#$%^≤ Murphy, Kathleen Torina (1982). The Importance of Play and Games in the Middle School Program for Emotionally Disturbed Young Adolescents. Journal of Mental Health Counseling, 31, 131-140. In

  31. maths

    Write these numerals in expanded form using power of 10. a 39 b 104 c 516 d 7056 e 61238

  32. Physics

    A concave mirror is constructed so that a man at a distance of 26 from the mirror sees his image magnified 1.5 times. What is the radius of curvature of the mirror?

  33. 5th grade math

    If you roll two number cubes numbered 1-6, what is the probability of rolling the same number on each cube?

  34. Cultural Diversity

    Which one of the following choices best completes the following scenario? A five-year-old __________-American child used to enjoy choosing her playmates and activity centers on the playground, but after her mother visited and observed the free play time,

  35. algebra

    The area of a rectangular athletic field is represented by the expression 16y²-49z² square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense “length times width”) of the athletic field. Include correct

  36. algebra

    Andrew factored the expression 28x©ø-6x©÷-10x as 2x(14x©ø-3x©÷-5x) . But when Melissa applied the distributive law and multiplied out 2x(14x©ø-3x©÷-5x), she got 28x©ù-6x©ø-10x©÷; thus, Andrew¡¯s solution does not appear to check. Why is

  37. College Pre-Algegra

    1. Find the exact value of tan660 using the functions of 330deg. 2. Solve the equation 2sin^20+5sin0+3=0 on the interval 0

  38. maths

    sarah brought a computer for £330000 each year the computer depreciated by 20% what is the value 2 years after he bought it ?

  39. Algebra

    Suppose that y varies directly with x and inversely with zy=25 when x=35, and z=7. Write the equation that models the relationship. Then find y when x=12 and z=4 Help me!?

  40. maths

    factorise; r squared take away 5t

  41. CHEM 111

    Calculate the pH of the solution that results from the addition of 12.00mL of 0.225M HNO3 to 20.00mL of 0.210M NH3. Buffer titration problem. Do I find moles and then???

  42. physics

    Marks: 4 A circular plate of radius 0.5 m is placed perpendicular to the direction of the magnetic field of 0.5 Tesla. What is the change of flux in the plate if it rotates and its plane becomes parallel to the direction of the magnetic field?

  43. physics

    A 0.2 kg conductor of length 0.8 m carries 2 ampere current to the right in a magnetic field. What is the magnitude and the direction of the magnetic field acting on the conductor if the net force on the rod is zero? (Assume that the rod is hung by two

  44. microeconomics

    If a monopolist is producing a quqnity that generates MC=Mr,then profit: a) is maximized b) is maximized only if MC=p c) can be increased by increasing production d) can be increased by decreasing production

  45. geometry

    ZY=7XY then ZX=8XY

  46. Algebra

    Train a is traveling @ 60 miles per hour. Train b is traveling @ 80 miles per hour. A arrives @ 9:25 am and b arrives @ 9:40 am what ime will train b catch up to train a?

  47. science

    what is the morality of a solution made by dissolving 1.00g of sodium hydroxide, NaOH in 100 mL of water

  48. science

    what is the morality of a solution made by dissolving 1.00g of sodium hydroxide, NaOH in 100 mL of water

  49. science

    what is the morality of a solution made by dissolving 1.00g of sodium hydroxide, NaOH in 100 mL of water

  50. English

    Explain the problems with this statement. Antigone said: "But I will bury him: and if I must die, I say that his crime is holy: I shall lie down with him in death, and I shall be as dear to him as he to me" (Sophocles 57-60)

  51. physical science

    A car weighing 15,000 N is speeding down the highway at 90 km/h. What is its momentum?

  52. algebra

    find the equation of the perpendicular line to y=1/2x+4 and passing through the point (1,-2) PLEASE HELP :)

  53. Pre Calc

    the graph f(x)=cos x Which gives the graph of g(x)=-2cos[3(x+(pi/3))]-5 write the equation of g(x) in terms of f(x). Is the question basicly asking for me to do g(f(x))?

  54. chemistry

    which has a greater entropy: 300mL of hydrogen gas or 300mL of liquid hydrogen ?

  55. Business

    Is it good or bad for corporations to rely on vendors for computing support? List arguments both for and against reliance on vendors as part of your answer.

  56. Physics

    A single photon in empty space is converted into an positron and an electron, each with rest mass 511Mev. (a) show this transformation is not possible (dynamaically). (b)How could this transformation be made posible. (c)what is the minimum photon energy

  57. Chemistry

    the pH of 10.00 mL of 0.100 M HCl after adding 10.00 mL of indicator solution

  58. physics

    This refers to the shuttle orbir question: my response to answers posted: So would I take the answer from the formula for a circumference of a circle(24900.26337) and divide it by 17,265 to get 1.442239408(~1.44h)? How I got the circumference: 2 x pi x

  59. Stats- Two-tailed test

    A researcher is conducting a matched-pairs study. She gathers data on each pair in the study resulting in the table below. Assume that the data are normally distributed in the population. Pair Group1 Group2 1 10 12 2 8 9 3 11 11 4 8 10 5 9 12 a) At 10%

  60. albebra

    What is the slope 0f x=-2

  61. Algebra

    how do you graph y=6

  62. social studies

    Describe how influential you would say the cold war has been on the world of today ?

  63. Algebra

    y+x=-2 What is the y intercept? What is the ordered pairs?

  64. Physics

    You drive due east at 86km/h for 55min . Then you follow a road going 60 degrees south of east, going 99km/h for another 40min . Find your total displacement

  65. matt/116

    b. For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is $84, what is the maximum number of trees you can buy

  66. Physics

    You walk 1130m east and then 950m south in a total time of 22min . Compute your displacement. Enter the east and south components of the displacement separated by a comma. Compute your average velocity in m/s . Enter the east and south components of the

  67. Physics

    You walk 1130m east and then 950m south in a total time of 22min . Compute your displacement. Enter the east and south components of the displacement separated by a comma. Compute your average velocity in m/s . Enter the east and south components of the

  68. Math-Algebra 1

    I need help with a pizzaz work sheet ASAP if i don't get this done i am on the verge of failing math and repeating 9th grade. its Pizzaz 11.10 thanks

  69. social studies

    the most significant thing to learn about the differences between social, political and economics systems in the world ???????

  70. Computers

    Assume that an average SNMP message is 100 bytes long. Assume that a manager sends 40 SNMP Get commands each second. a) What percentage of a 100 Mbps LAN link’s capacity would the resulting response traffic represent? b) What percentage of a 128 kbps WAN

  71. physics

    A 2.9-m nylon fishing line used to hold up a 5.2 kg fish has a diameter of 1.4 mm How much is the line elongated?

  72. Math

    Ben takes 6hrs to get a job done & Ted takes 11hrs to get the same job done. If they work together how long will it take them?

  73. math

    Mr. puts $10,000 into a CD that pays 8.5% interest compounded monthly. If he keeps the money invested for 10 years, what will be the value at the end of 10 years?

  74. physics

    The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.

  75. physics

    The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.

  76. chemistry

    which of the following are isoelectronic species: Na+,K+,Mg+2,Ca+2,S2-,Ar

  77. physics

    The problem concern the position vectors r1=2.43mi-4.74mj and r2=-3.02mi+0.85mj. Find the angle between the two vectors. Hint: Find the angle each makes with the +x-axis.

  78. computer

    write the following exponent.form.into fractional form: 1) 55.67878E05 2) 67.34567-E04 3) 34.5678E05

  79. biology

    flow chart for respiration and digestion

  80. stats math

    Popular wisdom is that eating pre-sweetened cereal tends to increase the number of dental caries (cavities) in children. A sample of children was (with parental consent) entered into a study and followed for several years. Each child was classified as a

  81. Geography

    how does geography affect cultural exchange? (cant figure it out)

  82. statistics

    2. A researcher hypothesized that the pulse rates of long-distance athletes differ from those of other athletes. He believed that the runners’ pulses would be slower. He obtained a random sample of 10 long-distance runners. He measured their resting

  83. physics

    a point charge 50*10 raise to the power -6 C is located in the XY plane at the position vector r0= 2i^+3j^. what is the electric field at the point of position vector r=8i^+5j^?

  84. precal

    Given an initial value of 17 g, which is halving once each 32 hours, an exponential function in term of hour t which models this situation is ...?

  85. Math

    The population of Las Vegas, Nevada in 2000 was 478,000 and is increasing at the rate of 6.28% per year. At this rate, when will the population reach 1 million people?

  86. chemistry

    15 GREM OF C6H12O6 WILL PRODUCE HOW MUCH CO2?

  87. Chemistry

    how would I make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution?

  88. maths

    A cubiod is cut into two triangular prisms by a single cut. Each of the resulting solids has How many faces? How many edges? How many vertices?

  89. Chemistry

    At what speed must an electron travel to have a wavelength of 13.6 pm? I got 9.89x10^-15 as the answer and its wrong where did I mess up in my calculations?

  90. chemistry

    calculate the molar concentration of substance in a solution containing 5,85g of Nacl2 in 200cm cube solution

  91. Chemistry

    What is the energy of a photon corresponding to radio waves of frequency 1.475 106 /s? I got 9.77e-28 as an answer and its wrong so what is wrong with my calculations.

  92. chemistry

    calculate for strong electrolyte the ph of 0,1M pf HNO3

  93. algebra

    5/(n^3=5n^2)=4/(n+5)+1/n^2

  94. Algebra

    (n+5)/(n+8)=1=6/(n+1)

  95. physics

    A 735 N person walks up three flights of stairs, covering a total vertical distance of 10.0 m. If, as is typical, only 20.0% of the caloric (food) energy is converted to work by the muscles, how many joules and food calories of energy did the person use?

  96. chemistry

    calculate for weak acid with ph 0,1M of CH3COOH (K=1,8*10-5)

  97. math

    4 – (- 6)

  98. physics

    A large stone is dragged 15m over a frozen lake. If the coefficient of friction between the stone and the ice is 0.1 and the whole process takes 8 seconds, how much work is done and how much power is required?

  99. English - To Kill A Mockingbird

    Hi My earlier question needed some clarification. I'm writing a monologue on a marginilised To Kill A Mockingbird character, I am doing Aunt Alexandra. During my monolouge I made two statements from Aunt Alexandra's pov. The first is that Aunt Alexandra

  100. Medical Coding and Billing

    I need help I have to write a research paper on compare and contrast Mac vs PC. Which one is better for the medical field and Why? I don't know where to start looking can you please help me

  101. Chemistry

    A gas has a volume of 50.0 cm3 at a temperature of -73°C. What volume would the gas occupy at a temperature of -123°C if the pressure stays constant

  102. Math

    A space shuttle is spotted flying at an angle of elevation of 17° when sighted from Cape Canaveral. At the moment it is sighted, it is directly overhead a ship located 12 mi from the Cape. The height of the shuttle at this moment is approximately a)3.5

  103. Chemistry

    At what speed must a neutron travel to have a wavelength of 9.2 pm?

  104. kahyla

    use the properties of logarithms to write the expression as a sum or difference of logarithms or multiples of logarithms. show your work Ln 8x 2. log2y^5

  105. life orientation

    critically discuss 5 ways in which the human or enrimental problem impacts on the community within south africa

  106. pre calc

    find the exact solution algebraically and check it by substituting into the orginal equation. 1. 36(1/3)^x/5=4 2. 32(1/4)^x/3=2

  107. Accounting

    What is the maturity value of a 120-day, 4 % note for $ 18,000

  108. Math

    Assume that the allowance account has a debit balance of $7,000 at the end of the year, before adjustments. If the estimate of uncollectible accounts based on aging the receivables is $10,000, the amount of the adjusting entry for uncollectible accounts

  109. physics

    A 100Kg stone is dragged 15m over a frozen lake. If the coefficient of friction between the stone and the ice is 0.1 and the whole process takes 8 seconds, how much work is done and how much power is required?

  110. Accounting 2

    At the beginning of the year, we purchased a generator for $ 56,000. We expect then generator to have a useful life of 12 years, or 60,000 hours. The residual value of the generator at the end of its life is expected to be $ 5,600. We actually used the

  111. pre calc

    find exact solution algebraically and check it by substituting into the original equation. 2(10^-x/3)=20 logtiny4(x-5)=-1

  112. arithmetic

    The 9th term of an A.p is 32 while the12th termis70.find the sum of it 20th term

  113. precalc

    A is accumulated amount investing after p principal for t years at and interest rate of r compounded anually k is times per year. P=$1500, r= 7%, t=6 P=1500, r=7%,t=5,k=4 P=$1250, r=5.4%,t=6

  114. English

    Can you please suggest a site where I can find information on Roosevelt and the New Deal to be used in a class of EFL speakers? Thank you very much!

  115. WRITING

    Dear Sharon, I remember when you walked in and you spotted me sitting on the left-hand side of the store. You walked slowly around me and then you squeezed and gently stroked me with your hands. Each stroke felt so nice and I enjoyed every moment. You sat

  116. English

    What does this quote means? Please interpret. "A sure way for one to lift oneself is by helping to lift someone else," - Booker T. Washington

  117. math

    solve for x 2ax+b=c

  118. chemistry

    if you have 24.00grams of O2 at 30 degrees Celsius, 204 KPa. how many liters of O2 do you have?

  119. life science

    explain two ways in which the auditory canal is adapted for its function.

  120. trigonometry

    if sin where defined=1/5 and where defined is in quadrant I find the exact value of sin2 where defined

  121. sci

    Is global warming skepticism just smoke and mirrors?

  122. Criminal Justice

    What safeguards might be employed to reduce or eliminatee unethical activity within the walls of a correctional facility?

  123. persuasive essay

    Why Americans should not count on Social Security for retirement. Even though Social Security may always have enough funds to support itself, Americans need another form of retirement funding in addition to Social Security. Americans cannot live on Social

  124. algebra

    a two digit number is four times the sum of its digits and twice the product of the digit. find the number using elimination method

  125. chemistry

    pure hydrogen gas is burns gently, combining with the oxygen gas of the air to form water vapor

  126. physics

    a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g

  127. math

    a train 280m long .its speed is 60 km per hour. then ,how much time it will take to cover220m long platform?

  128. Biology

    You are a botanist hired in the future to make a distant planet, Xyloph, habitable for human life. Your job is to help seed the planet with plant life by working with the Terraforming Team. All four major kinds of plants will be introduced into this new

  129. math

    a liscence plate for a car must consist of a letter followed by two numbers. Each letter mus be an R, U or N. Each number must be a 2 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points in the sample.

  130. chemistry

    in naming hydrocarbons .. if the hydocarbon has a double bond .. do i automatically consider it from the parent chain.. or it could be in a branched part

  131. Chemistry

    determine the pH of a solution made by mixing 8 ml of 1.10M acetic acid and 2ml 0.9 M sodium acetate solution. pKa for acetic acid CH3COOH is 4.745. Can someone please explain

  132. physics

    The plane is flying horizonally at 40m/s at an altitude of 125 m when it drops a bomb. determine how far horizonally from the target you should release the bomb

  133. English

    Could you please check this paragraph? It is really urgent. Thank you!! 1)My name is Michele and I was born in Torino on 23 march 1997. When I was three years I went to Rome with my family. 2) Now I have got 14 years old and I go to secondary school . 3)I

  134. health

    where do you seek help when a person is in danger of suicide?

  135. cultural diversity

    I actually am just looking for any ideas on multicultural issues in education, i have some ideas but have to make a list now and im assuming later on maybe pick one for a final project or something. any help would be greatly appriciated

  136. statistics

    In the past a certain college has found that 35% of the students will grad within 4 years. A random sample of 450 students at this college is taken and going to be followed until graduation. A. What is the sampling distribution of the statistic of

  137. Math

    is coefficient of correlation and coefficient of determination the same thing? or different?

  138. Math

    is coefficient of correlation and coefficient of determination the same thing? or different?

  139. managerial finance

    The annual bonus for senior managers at Wanstead Engineering was first agreed in 1998. Since then the company has seen no need to make any changes to the way in which the bonus is calculated. Both shareholders and managers agree the bonus is important, as

  140. Chemistry

    At what speed must an electron travel to have a wavelength of 13.6 pm? I got 9.89x10^-15 m/s as the answer and its wrong where did I mess up in my calculations? I keep coming up with 9.89x10^-15 m/s and its wrong.

  141. Into to busineess

    How can lean manufacturing and near-sourcing help a company gain a competitive edge and prepare for the future

  142. maths

    The mean weight (1.0042kg) of the contents of samples of 30 bags of sugar has standard error 0.008kg. Choose the option that is closest to the probability, to three decimal places, that the mean weight of the contents of samples of 30 bags of sugar will be

  143. persuasive essay

    Why Americans should not count on Social Security for retirement. Even though Social Security may always have enough funds to support itself, Americans need another form of retirement funding in addition to Social Security. Americans cannot live on Social

  144. history

    How does the Euthyphro Problem attack modern cognitive religion? Is there a response that would satisfy the problem? I need help with the 2nd question.. this Is my answer however: Euthyphro Problem appears in the dialogue of Plato who ponders on the

  145. history

    The following links provided weren't helpful.. I used them to discover parts of my answer though. Can someone check my answer and help me with questions 2? How does the Euthyphro Problem attack modern cognitive religion? Is there a response that would

  146. math

    Perform the modular arithmetic operation 6.9 ( mod 5)

  147. math

    factor (25-x^2)

  148. algebra

    Work out the value of 4(x+1) 4(x+1) when x=3

  149. Maths

    Sarah said when x=3 then the value of 4x squared is 144 holly said when x=3 then the value of 4x squared is 36 who is right and why?