Questions Asked on
September 23, 2015

  1. english

    1. What does Al Gore, author of An Inconvenient Truth, demonstrate about the level of at atmospheric carbon dioxide levels? A. Each year, the CO2 level rises and then falls. Over the past 50 years, it has steadily increased. B. Each year, the CO2 level

  2. Math

    9. how you would convert the repeating, non terminating decimal to a fraction? explain the process as you solve the problem. 0.1515 I don't understand this question can someone help explain this?

  3. science

    The modern atomic model includes electrons orbiting the nucleus. Which of the following parts of Dalton's atomic model was disproved by the discovery of the electron? - Atoms are tiny particles. - Atoms cannot be divided into smaller parts . - Atoms have

  4. physics

    Henry hits a hockey puck in the positive x-direction at time, t ≈ t0. The puck is then stopped by a net starting at time, t ≈ t1. Which of the following curves could describe the acceleration of the hockey puck if we ignore any effects of friction? 1.

  5. Algebra 1

    Which sum of difference is equivalent to the following expression? 2x + 3 ______ 4 a.) x/2 + 3/4 b.) x/2 - 3/4 c.) 3x/4 + 3/4 d.) 8x + 24 I think it's either a or d, please help me.

  6. Chemistry

    If silver has a density of 9.32 g/cm^3 how do you find the length of one side of an 184 g silver cube

  7. physics

    A lizard accelerates from 2m/s to 10m/s in 4 seconds. What is the lizards average acceleration?

  8. math

    Laura drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 6 hours. When Laura drove home, there was no traffic and the trip only took 4 hours. If her average rate was 22 miles per hour faster on the trip home,

  9. Chemistry

    You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1 lb = 454 grams. a.How many grams of sucrose did you purchase? 454 grams (g) = 1 pound (lb) 454 g * 5 = 2270 g A 5 pound bag of

  10. Algebra

    The general equation for depreciation is given by y = A(1 – r)t, where y = current value, A = original cost, r = rate of depreciation, and t = time, in years. A car was purchased 6 years ago for $25,000. If the annual depreciation rate is 11%, which

  11. U.S. History (Ms.Sue)

    Why did Southern Democrats walk out of the Democratic Convention?

  12. ap history

    36. Which of the following statements about Virginia is correct? [a The indentured servants’ chances of upward social mobility improved in the second half of the 1600s. [B] By 1640 the great majority of its plantation laborers were African slaves. [C] It

  13. probabilty

    There are 4 baskets. The first basket has 3 apples and 4 oranges, the second one has 4 apples and 5 mangoes, the third one has 6 Mangoes and 2 bananas and the last one has 7 bananas and 2 apples. If a fruit is randomly chosen from any basket and it comes

  14. Math

    Connor ran around the 1/4-mile track 15 times! Express the distance he ran as a mixed number.

  15. English

    Which of the following was valued during the Romantic period? logic individualism balance restraint

  16. algebra

    maria and tim sold candy bars for a fundraiser.maria sold 7 less than twice the number of candy bars that tim sold.in total maria and tim sold 137 candy bars.find the amount of candy bars sold by each

  17. IPC

    A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second2. How long does it take the bike to reach the final velocity?

  18. Health

    Girth measurements are reliable method of measuring body composition? A. True B. False*** There are many different methods of measuring body fat however the results may vary and it is often hard to determine their accuracy? A. True B. False***

  19. Math

    1. Jenny is building a rectangular garden around a tree in her yard. The southwest corner of the garden will be 2 feet south and 3 feet west of the tree. The northeast corner of the garden is 1 foot north and 4 feet east of the tree. What will be the

  20. college chemistry

    From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go

  21. Chemistry 151

    How many moles of chloride ions are in 0.2580 g of aluminum chloride?

  22. chemistry

    CaO(s) reacts with SO2(g) according to the following equations: CaO9(s)+So2(g)--> CaSO3(g). A 8.85g mixture containing CaO(s) is placed in a 3.00-L container. The container is filled with SO2(g) to a pressure of 749 torr, at 20.0 degree Celsius. After the

  23. AP History

    Which of the following statements about the slave trade that developed from the fifteenth century onward is correct? AThose sold into slavery by African kings were primarily undesirables such as lawbreakers or persons accused of witchcraft. [B] Slavery

  24. geometry

    which angle forms a vertical pair with nsm

  25. Physics

    1) use dimensional analysis to determine which of the following expressions gives the area of a circle: is it pie r ^2, or 2 pie r? explain - pie r^2 right?? because its what they normally use to find area of a circle 2) If a distance d has units of meters

  26. Geometry

    The endpoints of the diameter of a circle are at (1, 2) and (7, -6). What is the circumference of the circle, to the nearest tenth of a unit? 15.7 31.4 62.8 78.5 Please help?

  27. Algebra

    A group of retailers will buy 96 televisions from a wholesaler if the price is $500 and 136 if the price is $450. The wholesaler is willing to supply 84 if the price is $420 and 164 if the price is $510. Assuming the resulting supply and demand functions

  28. W

    Some people in a hotel are dropping water balloons from their window onto the ground below. The balloons take .15s to pass your 1.6m tall window. Where should security look for the raucous guest? Express your answer using tow significant figures.

  29. math

    If p and q are real numbers such that p>5 and q>4, what is the smallest integer larger than the product of pq? a. 9 b. 10 c. 19 d. 20 e. 21

  30. Algebra

    How do I turn this into a algebraic expression, eight more than six times a number added to one more than nine times the number

  31. Algebra

    x/4 = 12/6 A. x= 6 B. x= 12 C. x= 8*** D. x= 48

  32. Chemistry

    Problem: Assume 200.0 mL of 0.400M HCl is mixed with 200.0 mL of 0.400M NaOH in a coffee-cup calorimeter. The temperature of the solutions before mixing was 25.10°C; after mixing and allowing the reaction to occur, the temperature is 27.78°C. What is the

  33. Maths

    The sum of the ages of 3 person is 50 years. What will be the sum of their ages after 5 years

  34. math

    find X if the numbers X+3, 5x-3, and 7x+3 are three consecutive terms of a G.P of positive terms. with this value X and given the X+3, 5x -3 and 7x +3 are the third, fourth and fifth terms of the G.P.. find the sum of the first 8 terms of the progression.

  35. Algebra

    Calvin deposits $400 in a savings account that accrues 5% interest compounded monthly. After c years, Calvin has $658.80. Makayla deposits $300 in a different savings account that accrues 6% interest compounded quarterly. After m years, Makayla has

  36. Chemistry

    For the following chemical reaction, how many moles of lead(ii)iodide (PbI2) will be produced from 8 mol of potassium iodide (KI)?

  37. physics

    A car is traveling at a constant velocity of 21 m/s (about 45 mph). The driver sees a fallen tree lying across the road and hits the brakes after a delay (reaction time) of 245 ms. (1 ms = 10-3 s.) Calculate the distance the car travels during this 245 ms

  38. college chemistry

    From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go

  39. St Katerina

    How to find the width of a rectangular pen area of 176 meter square and 16 meter long?

  40. math

    A guy wire is attached to the top of a radio antenna and to a point on horizontal ground that is 50.0 meters from the base of the antenna. If the wire makes an angle of 59°30' with the ground, approximate the length l of the wire. (Round your answer to

  41. math

    Of the set [–5, 5, –3, 8], which two numbers have the same absolute value? Explain

  42. Physics

    A skier takes off a ski jump, with a velocity of 25m/s at an angle of 30 degrees above the horizontal/ the take off point is 2 m above the slope, which falls away in front of her 15 degrees below the horizontal. Treating the skier as a point particle and

  43. Chemistry

    You make a solution using a solute (5g) in water (total volume 100ml). The molar mass of the solute is 110 g/mol. What is the molarity? What is the concentration reported as % by mass?

  44. math

    what is 7 to the 6th power divided by 7 to the first power.

  45. algebra I

    find all numbers such that a third of a number increased by half that number is at least 3 less than that same number. not sure what to do

  46. Chemistry

    Suppose water contained some harmful volatile substance. How could you easily remove the volatile substance in a laboratory?

  47. grammar

    Identify the sentence parts by placing the red abbreviations in their correct locations. Put parentheses around the prepositional phrases. Identify the subject, verb, and any complements (direct object, indirect object, subject complement, objective

  48. Math

    If 2/3 pound of candy costs $7 how much does 1 pound of candy cost?

  49. health

    which of the following statements is true in regard to limited data sets?

  50. Chemistry

    Separation of a mixture Lab - SiO2, NaCl, NH4Cl So step #7 was: Carefully pour off (decant) the liquid into the second evaporation dish, Adding deionized water in small amounts to the first dish and to stir it, and pour the liquid again into the second

  51. math

    A recipe calls for 4 cups of flour to make a dozen cookies. How many cups of flour would be needed for 54 cookies?

  52. english help please!!

    Has anyone read the War of the worlds? I need to make a topic sentence for either 1. Based on this chapter, what might be the author’s message or theme? or 2. How is H. G. Wells’ fictional world in War of the Worlds similar to the real world? Help me

  53. Quick algebra help

    What would this look like if a write a function g whose graph represents the indicated transformation of the graph of f? 1. f(x)= |x| translation of 5 units left and 2 units up 2. f(x)=x^2; reflection in the c axis and translation 8 units left

  54. math

    6x-2y+1=0 and 3x-5y+7=0 How do I substitute this?

  55. Math

    After a genetics experiment on 67 pea plants, the number of plants having certain characteristics was tallied, with the results given below. Answer parts (a) through (c). 22 were tall 35 had green peas 42 had smooth peas 12 were tall and had green peas 20

  56. U.S. History (Help!)

    How did the issue of Kansas reflect the growing division between North and South?

  57. History

    why did the English settle in Virginia in the 17th century ?

  58. Math

    It's your birthday and you are going to have a party. You buy 6 pints of ice cream. If you serve each of your guest 2/3 of a pint, how many guest can be served?

  59. Science

    Plants continue to grow throughout their lives by producing new plant material. Photosynthesis is required for this process to occur. True or false? And explain why.

  60. Science

    What is/are the main factor(s) that determine(s) that your plants will grow into bean plants (or other fast-growing plants that you used for your experiment) and not some other type of plant (genetics, environment, or both)? Explain your answer

  61. Algebra 2

    The total area of two square windows is 1,025^2 in.2. Each side of the larger window is 5 in. longer than the sides of the smaller window. How long are the sides of the smaller window? a.13.5 in. b.20 in. c.25 in. d.31.6 in. Please help me and explain I'm

  62. Science

    What is/are the main factor(s) that determine(s) that your plants will grow into bean plants (or other fast-growing plants that you used for your experiment) and not some other type of plant (genetics, environment, or both)? Explain your answer

  63. Physical

    A sonar device uses sound to measure distance under water. The speed of sound in water is about 1,400 m/s. If a ship sends a signal it reflects back off of an object such as another submarine or a whale and takes 3 seconds to return, how far away is the

  64. physics

    An object is dropped from rest at a height of 112 m. Find the distance it falls during its final second in the air. m

  65. physics

    Two racing boats set out from the same dock and speed away at the same constant speed of 120 km/h for half an hour (0.500 h), the blue boat headed 23.7° south of west, and the green boat headed 34.4° south of west. During this half-hour (a) how much

  66. math

    A bill is for $4000.00 with the terms of 2/ 10-60x cash discount. How much would be remitted if the invoice were paid within the cash discount period?

  67. math

    You decide you will buy a stock only if it shows an overall increase over the next 30 days. The first 10 days it has an average daily increase of $0.30. The next 10 days it has an average daily decrease of $0.45. The last 10 days it has an average daily

  68. math

    A recipe calls for 4 cups of flour to make a dozen cookies. How many cups of flour would be needed for 54 cookies?

  69. math

    Ashley had an equal number of dimes and quarters until she gave 15 quarters away. She now has $ 22.50 in dimes and quarters. How many dimes does she have?

  70. Math ratios

    Bob needs to mix 2cups of orange juice conCentrate with 3.5 cups of water to make orange juice.bob has 6 cups of concentrate. How much orange juice can he make?

  71. Math

    Write a linear equation in slope intercept form for each of the following: A line perpendicular to y=x+2 that passes through the origin. A line perpendicular to y = -1/2x + 5 that passes through the points (4,1) and (1,-5). A line that is the perpendicular

  72. Math

    Of 20 scores, 19 are less than or equal to 10. Find the percentile rank of 10. They don't give you the exact number of tens so i don't really know how to do this? Could someone please explain?

  73. Math

    Mixed Rationals: Solve these question in two or three steps: 879 + 47/22 4591 - 133/61 -1 + 17/13 -68 - 18/7 -1297 + 763/512 Thank you!

  74. Math (vector addition)

    A bridge member is exerting a force of 500lbs on a joint. The member is connected to the bridge at an angle of 50 degrees. Calculate the x and y components.

  75. math

    find the percentile rank of 4.6 out of these numbers: 1.8, 2.5, 3.9, 4.6, 4.7, 4.8, 4.8, 4.9

  76. Algebra

    An equation for the depreciation of a car is given by y = A(1 – r)t , where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is

  77. chemistry

    is the following positive in a biuret test? skim milk purified casein purified lactose dextrose

  78. Chemisty

    Based on equation: 2MnO4¬¬(-) + 6H(+) +5H2O2 → 2Mn(2+) +8H2O + 5O2 A 50.0 mL solution of hydrogen peroxide of unknown concentration was diluted with 1.00L of water. 25mL of this diluted solution was then titrated with acidified potassium permanganate;

  79. Math

    If I have a random stack of 5 quarters, the 1st 3 quarters are heads. What is the probability the the 4th quarter would be another head What is the probability the the 4th quarter would be a tail Is there a way to show the probability or odds that you

  80. Movement and Music

    At what age are children usually able to hop? 20% 30% 40% 50%

  81. math

    between 400 and 500. ones digit is 2 less than the hundreds digit tens digit is 2 less than the ones digit

  82. math homework

    9. Jonathan and his band want to record and sell CDs. The recording studio charges an initial set-up fee of $250, and it charges $6.00 to burn each CD. a. Define the variables in this situation: • Let ____ = __________________________ • Let ____ =

  83. Chemistry

    At 573 K, gaseous NO2(g) decomposes, forming NO(g) and O2(g). If a vessel containing NO2(g) has an initial concentration of 1.9 × 10−2 mol/L, how long will it take for 75% of the NO2(g) to decompose? The decomposition of NO2(g) is second-order in the

  84. physics

    A cannonball is fired with an angle of 40 degree above the horizontal.If the velocity when it hits the ground is 80 m/s FIND a.Viy b.time of travel c.max height d.range

  85. English

    How can I introduce 2 of these quotes with a SUBJECT VERB construction & a COMMA??? QUOTE 1) CITATION> (Thoreau 8). All men recognize the right of revolution; that is, the right to refuse allegiance to, and to resist, the government, when its tyranny or

  86. SS

    What do the colonies call themselves in the last part of the document?

  87. Physics

    An 8 kg mass is supported by an aluminum wire of length 80 cm abd diameter 2.0mm. How much will the wire stretch?

  88. Grammar

    There was also an admission for I terrine contractions and some brown red discharge and questionable bleeding.

  89. MATH

    find the LCD of -3/4x , 5/x , 7/x^2

  90. MATH

    Divide: h^2-k^2/h^4-k^4 ________________ h-k/h^2+k^2

  91. math

    Tim needs 18 pens. He can buy them in packages of 6, 9, or 12. He will buy only one type of package WHich packages could Tim buy? Which packages could Tim buy exactly 18 pens.

  92. MATH

    Find the LCD them make in into similar: -3y 4y^2 ____ , _____ x-1 x^2-1

  93. Algebra

    what happened to function f (x) = x? f(x-7) + 4

  94. math

    between 800 and 900 . tens digit is 3 more than the ones digit . ones digit is 5 less than the hundreds digit

  95. green valley college

    the principal constituents of natural gas is methane which burns in air according to the reaction CH4+O2=CO2+H2O How many grams of CO2 is produced when you have 50g of both CH4 and O2 what is the limiting reactant?

  96. algebra

    the length of a triangle is 2 more than 3 times the width.If the perimeter is 92,find the dimensions of the rectangle.

  97. Chemistry

    How many moles of ammonium ions and how many moles of sulfate ions are contaiuned in a 0.400 mile sample of (NH4)2SO4? Referring to the 0.400 mole sample of (NH4)2SO4 on the previous page, how many atoms of N,H,O, and S, are contained in this sample?

  98. Math

    If 2 inches represents 8 ft on a scale drawing, how many feet does 6 inches represent? Inches=2 inches=6 feet= 8feet=____

  99. algebra

    find three consecutive odd integers such that the sum of the middle and largest integer is 21 more than the smallest integer

  100. green valley college

    automotive airbags inflate when sodium aside NaN3 Rapidly decomposes to its consistent elements. the equation for the chemical reaction is NaN3=Na+In2 The gaseous N2SO generated inflates the airbag. How many moles of NaN3 would have to decompose in order

  101. Chemistry

    An unknown organic compound is 40.00% C, 6.67% H and 53.33% O by mass. The formula weight of the unknown is 90.0g/mole. Find the empirical and molecular formulas for the unknown compound.

  102. Physics

    You are driving off of a horizontal cliff, and your car has a horizontal velocity of 29.33 m/s at the instant you leave the cliff. The cliff is an unknown height above a rocky ravine, but you land 146.8 m away from the sheer cliff face. How tall is the

  103. Physics

    You are driving off of a horizontal cliff, again!!! The cliff is measured to be 35.56 m above a rocky ravine floor, but you land 10.36 m away from the sheer cliff face. How fast were you going when you drove off of the cliff?

  104. math

    in an examination, 31 candidate passed chemistry, 29 passed physics and 3 failed both subject. if 50 candidate sat for the examination, how many of them passed chemistry only?

  105. Physics

    A sound wave travels a distance 1020 m in 5 minutes. If the length of the three successive crests is 15 m, then calculate the wave speed. "Length of three crests"? I'm not sure about that.

  106. science

    A body is projected vertically upwards from the ground such that its speed at half the maximum height is 20m/s. Find the maximum height attained by it.

  107. socials

    How has Britain’s political system impacted Canada’s political system (e.g., how, to a great extent, it’s modelled on it in the type of government we have, legal system, etc.)? Make sure to also include the influence of the English Bill of Rights and

  108. maths

    6.The angle of elevation to the tower is 30(degree) and then moved towards the tower of a distance 20m. Now the angle of elevation is 60(degree). What is the height of the tower?

  109. Physics

    A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 34.1 m/s. At the same time, it has a horizontal velocity of 51.1 m/s. At what speed does the vehicle move along its descent path? 1.Answer in units of m/s. 2.At

  110. Math

    How do I turn this into a algebraic expression, the sum of two times a number and five added to six times the number

  111. Physics

    how much heat is needed to vaporize a 400.0 g of liquid water at 310.0 K?

  112. Physics

    The velocities of sound in media P and Q are 300 meters/second and 350 meters/second respectively. If the difference in wavelength of the two waves in those media is 0.5 meters, what distance will the sound travel in 50 vibrations in the medium Q? The

  113. chemistry

    Use the percent composition of total protein in skim milk to determine the percent of the total protein that is due to the casein fraction. my percent composition of total protein in skim milk is 15.6%

  114. chemistry

    Use the percent composition of total protein in skim milk to determine the percent of the total protein that is due to the casein fraction. my percent composition of total protein in skim milk is 15.6%

  115. Math

    a / 4 = 8 Solve

  116. Algebra 1

    Are 8x^2y and -5yx^2 like terms? Explain. I'm not 100% sure, but I think they are like terms. Please help!

  117. Social Studies

    2) An econmy’s total output divided by the total population is called: a- gross national product b- circular flow** c- GDP per capita d- net export

  118. chemistry

    Use your calculated value for the percent composition of total protein in skim milk to calculate the mass of protein that would be present in one serving size (1 cup, 240 ml) of skim milk. 15.6% percent composition

  119. English

    Will someone help me write setences for each of the purposes listed below? Also, please tell me if the sentences that I have written so far are alright. The topic must be video games. To inform: If you think video games damage the human brain, think

  120. Physics(which cone will land first)

    consider two solid cones made from a uniform material. The smaller cone is a ½ scale model of the bigger one. They are released from equal height, quickly reach their terminal velocities and fall in air until they hit the ground. Use scaling reasoning to

  121. Math

    In a third game. Javier first two darts land in R what is the maximum possible score in this game

  122. SS

    take on the role of a Tory or Patriot and decide if war can be avoided. What are the benefits of preserving peace? What are the reasons for going to war? If the Revolution had been avoided, how would America be different? Subject

  123. s.s

    How has Britain’s political system impacted Canada’s political system

  124. physics

    A child rides a ferrisvwheel for 3.5 minutes. If a rotation covers 986 feet and it rotates 1.5 times per minute, what is the velocity of the ride? Whats the mistake?

  125. math

    ginger sent 18 text messages yesterday.jerry sent 4 more than twice as many messages as ginger sent. kyle sent 15 fewer messanges than jerry.how many test messges did jerry and kyle send?

  126. Physics

    Two forces whose resultants is 100N are perpendicular to each other. If one of them makes an angle of 60 degree with the horinzontal. Calculate its magnitude

  127. Math

    The odometer on a car shows 26962 km. Notice that this number is a palindrome. After the car has travelled two hours at a constant rate, the odometer shows the next possible palindromic number. How fast is the car travelling?

  128. calculus

    dont get it write intervals for the function sin(x)/1-cos (x) is continuous on.

  129. Math

    Simplify -(a + 5)

  130. calculus

    simplify the given expression using factors 1. 5(x^2+4)^4(2x)(x-2)^4+(x^2+4)^5(4)(x-2)^3 2. (x^2+3)^(-1/3)-2/3x^2(x^2+3)^(-4/3) 3. 2x(x+6)^4-x^2(4)(x+6)^3/(x+6)^8 4. (7-3x)^1/2+3/2x(7-3x)^(-1/2)/7-3x

  131. Physics

    consider two solid cones made from a uniform material. The smaller cone is a ½ scale model of the bigger one. They are released from equal height, quickly reach their terminal velocities and fall in air until they hit the ground. Use scaling reasoning to

  132. history

    why was slavery created and when and for how long and how many white people care and who stop it and when.

  133. Physical Science

    how much energy must be removed from 1 L of water at 25 C and turn it to ice at -10 C?

  134. Math

    explain why the image of a translation is congruent to it's pre image

  135. precalc

    y=10cos(2π/3)(x-.3)+50 x=17.2 i plugged this into the calculator and i got -34.5, but the answer is 43.3 how do i get that answer?

  136. MATHS

    If I paid 12z for something and received 27s in change, how much did the item cost, given that 5s = y and 10y = z ?

  137. calculation

    how do I figure out the calculation of 999, 822 and the date of 5/14/2015 to equal 51981220?

  138. Calc- Limits

    what is the limit of x as it approaches 1 when x/ln x?

  139. Algebra 1

    Order the numbers in each exercise from LEAST to GREATEST 1.) -1 2/3, 1.6, -1 4/5 My answer: -1 4/5, -1 2/3, 1.6 2.) 7/9, -0.8, The square root of 3 My answer: -0.8, 7/9, The square root of 3 Am I right? I'm not so sure about 1.) Thanks!

  140. Math

    Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Please help! Thank you!

  141. Algebra

    A baseball team played 160 games and won 62 more than they lost. What was their record?

  142. English language

    what are proper nouns and common nouns and give examples of each. how do I make a noun mobile school project.

  143. Biology

    What is the phase where chromatin condenses to form chromosomes

  144. AP Chemistry

    Hey guys! I'm stuck on some study guide problems... (On the bottom of this, I put what answers make sense to me) A) A factor that affects the speed of heterogeneous reactions but not of homogeneous reactions is 1)nature of reactants 2)concentration of

  145. Chemistry

    I need help I do not know how to set up this problem. Calculate the energy to heat three cubes gold aluminum and silver from 15 Celsius to 25 degrees Celsius. Density gold:0.129 J/g degrees C Density aluminum: .896 J/g degrees C Density silver: .235 J/g

  146. maths

    express the ratio of 4.50,3.60,1.80 init's simplest form

  147. English

    Posted by rfvv on Wednesday, September 23, 2015 at 4:21pm. 1. Peter is the boy whom I met in U.K. 2. Peter is the boy whom I met in the U.K. ==================== Which one is right? Is # 1 OK without 'the'? English - Reed, Wednesday, September 23, 2015 at

  148. math

    7=-2/v+4 solve for v

  149. Math

    Write an expression: The quotient of a number h and 3 decreased by 2. Would you write it like this: h/3-2

  150. math

    What is the commission on a sale total of $300,000 if you keep 8%? help!

  151. math fraction

    I kept 1/2 of my money in savings, and took half to the park, there I spent 1/5 on popcorn and 3/4 on rides. How much of my money did I not spend?

  152. math

    what is the range of 98,78,84,75,91

  153. Chemistry

    The reaction 2NO(g) + 2H2(g) N2(g) + 2H2O(g) goes twice as fast when the concentration of H2 is doubled but four times as fast when the concentration of NO is doubled. What is the overall reaction order? I did it like this: k[NO]^m[H2]^n 2r=[H2]^n, meaning

  154. Health

    the is an instrument used to preform a type of body fat evaluation? A. Tape measure B. Skinfold caliper*** C. Hydrostatic caliper

  155. Math

    Solve the following two mixed rationals questions: A.) 7689 - 91/103 B.) 5410 + 657/658

  156. Algebra

    If you have a box of chocolate that has 5 dark chocolates and 8 milk chocolates. How many times would you have to reach in the box and take a chocolate out at a time. How many times would you have to reach in to get at least either 2 milk or 2 dark

  157. Math

    Find two consecutive odd integers such that the sum of four times the larger and twice the smaller is 194. Help Thank you!

  158. Social Studies

    Which of the following is most likely to help countries in West and Central Africa solve their economic problems? A. griots B. microcredit C. imports of natural resources D. negative balance of trade I think the answer is D.

  159. Math (vector addition)

    A plane is traveling toward the southwest at 200 km/h. Calculate the westward and southward components of the velocity.

  160. math

    In triangle ABC, the measure of angle C is five times the measure of angle A, and the measure of angle B is 26° more than the measure of angle C. Find the measure of each angle of the triangle.

  161. Maths

    Express as a single power of 'a' Root(a^3) Thankyou

  162. History

    after the boston tea party, the british government closed the port of boston until order was restored and the cost of the tea had been rapid . far-away colonies like new york and south corlina began to send food and supplies to boston by road. what

  163. Math

    what is the solution of the equation shown. -4w+5/3= -13

  164. Science

    A 100kg block rests on a table. The area of contact between the block and the table is 4m2. Calculate the pressure.

  165. math

    Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her

  166. Physics

    If you throw a ball straight up at 10 m/s and release it 2m above the ground: a) What height will the ball reach V^2=u^2+2as 0=100+19.6s s=5.1+2 s=7.1m b)How long after you release the ball will it hit the ground? (Answer should be 2.22s but need help

  167. Quick English check

    Please check these sentences and correct me if I'm wrong, thank you! 1. A 'MYRIAD' of people are interested in auditioning for the reality tv show, but only a handful will be afforded the opprutunity. 2. The villain wants the world to tremble at the 'MERE'

  168. math,science,algebra,geography

    does any1 know a website that I can find answers to every subject asap?

  169. Gen Chem

    Predict products and balance equations for the reactants shown. Pb 2+(aq) + H2PO4 1-(aq)--->? Pb 2+(aq) + HPO4 2-(aq)--->? Pb 2+(aq) + PO4 3-(aq)---->?

  170. Chemistry

    What is the wavelength in nanometers of a photon with a frequency of 6.10 ✕ 10^14 sec-1? (The speed of light in a vacuum is 2.998 ✕ 108 m/s. Planck's constant is 6.626 ✕ 10^-34 J·s.) I know that speed of light = wavelength * velocity, but I don't

  171. chemistry

    What is the mass of a liquid that has q volume of 2.5L and a density of 3g/cm cubbed? I got 7.5, but I am unsure if I should have converted L to mL

  172. Math

    4 1/2+ 2 5/8=

  173. pre-calculus

    Almonds cost fiver per pound and cashews cost nine per pound. How many pounds of almonds should be mixed with the cashews to make 10 pounds of a mix that sells for eight dollars per pound?

  174. math

    The length of the longest piece of bread is 1405 and 1 3\4. It was cut into slices 1\2 in thick how many slices were there?

  175. Math

    Paul was given this math problem on a test to simplify: 1/4 + (5/8 + 1/2). after calculating, Paul mistakenly simplified to 9/32 as his final answer In which step did Paul make his first error? Show your work! My work Paul's work 1/4 /9/8 1/4 /(5/8 + 4/8)

  176. Social Studies

    What led to Japan's Isolation Need Help!!!!

  177. Algebra

    A type of plant is introduced into an ecosystem and quickly begins to take over. A scientist counts the number of plants after m months and develops the equation p(m)=19.3(1.089) raised to m, to model the situation. Most recently, the scientist counted 138

  178. SS

    what should people do if a government is not protecting natural rights?

  179. maths

    the temperature drops by 6 degree Celsius for each of the next three days write down the calculation to work out the total change in temperature over these three days

  180. Physics

    an airplane flies sue west at 185 km/h with respect to the air. there is a wind blowing at 85 km/h to the northeast relative to the ground. what is the planes speed and direction with respect to the ground answers. // our class is literally stuck in this

  181. Math

    I'm not sure how to arrive at my answer. Convert 1.745 * 10 ^-5 m^3 to pints How would you show the work for that because my conversion are wrong.

  182. Physics

    A small container of water is placed on a carousel inside a microwave oven, at a radius of 13.5 cm from the center. The turntable rotates steadily, turning through one revolution each 6.90 s. What angle does the water surface make with the horizontal? Im

  183. social studies

    How did trade develop between Japan and Europe in the 1500s? How and why did the Tokugawas isolate Japan?

  184. Physics

    A fast, measured pitched baseball left the pitcher's hand at a speed of 48.6 m/s. The pitcher was in contact with the ball over a distance of 1.44 m and produced constant acceleration. I know that t=(Vf-Vi)/a based on a kinematic equation. Also, I setup:

  185. physics

    a bock with mass 60kg sits on a surface with static friction Us = 0.51. a spring (k = 69N) is stretched horizontally by 11cm but the block is still stationary. What is the friction force felt by the block when stretched 11cm?

  186. Math(HELP!!!) PLEASE

    How would you convert 1.5 square iles to dm^2?? I don't know how to show my work for this particular one.

  187. Algebra

    If you have a box of chocolate that has 5 dark chocolates and 8 milk chocolates. How many times would you have to reach in the box and take a chocolate out at a time. How many times would you have to reach in to get at least either 2 milk or 2 dark

  188. Chemistry 102

    What is the freezing point in ∘C of a solution prepared by dissolving 6.60 g of MgCl2 in 110 g of water? The value of Kf for water is 1.86 (∘C⋅kg)/mol, and the van't Hoff factor for MgCl2 is i = 2.7.

  189. physics

    a cart if weight 25 N is released at the top of an inclined plane of length 1m, which makes an angle of 30 degree with the ground. It rolls down the plane and hits another cart of weight 40 N at the bottom of the incline. Calculate the speed of the first

  190. English

    1. How do you know about the painting? - I think it's beautiful. ---------------- Is this answer correct? If not, what would be the answer to the question?

  191. social studies

    what did the Taino think of the Spanish ? sight sound touch taste smell

  192. Math

    Post a New QuestionCurrent Questions Homework Help: Math Posted by Mikil on Wednesday, September 23, 2015 at 6:50pm. Write a linear equation in slope intercept form for each of the following: A line perpendicular to y=x+2 that passes through the origin. A

  193. English

    Do the words 'playingly' and ,'unplayingly' have a meaning?If so kindly help me with their meanings and some sentences.

  194. Math

    Ana bought a van that holds 12.5 gallons of gas and gets an average of 15.5 miles per gallon. How many miles can she expect to go on a full tank of gas?

  195. al 1

    How do you solve this.....x/3+ x/2=3/4

  196. chemistry

    Calculate the mass of salt needed to prepare 100 cm3 of 0.05 M solution of: (i) Fe(NH4)2(SO4)2.6H2O

  197. chemistry

    Calculate the mass of salt needed to prepare 100 cm3 of 0.05 M solution of: (i) Fe(NH4)2(SO4)2.6H2O (ii) FeNH4(SO4)2.12H2O

  198. chemistry

    How would you determine the polarity of the cell after each addition of Fe3+ solution

  199. Chemistry

    The decomposition reaction of A to B has a rate constant of 0.00923 M-1s-1: A → 2B If the initial concentration of A is 0.160 M, how long will it take for the concentration of A to decrease by 68.2%?

  200. chemistry

    Calculate the value of the [Fe3+]/[Fe2+] if 3 cm3 of the 0.05 M Fe3+ solution is added to 25 cm3 of the 0.05 M Fe2+ solution

  201. English

    1. Peter is the boy whom I met in U.K. 2. Peter is the boy whom I met in the U.K. ==================== Which one is right? Is # 1 OK without 'the'?

  202. Physics

    A rocket engine can accelerate a rocket launched from rest vertically up with an acceleration of 18.4 m/s2. However, after 49.6 seconds of flight the engine fails. Neglect air resistance and assume g = 9.80 m/s2 throughout the flight.

  203. English

    1. The market is always crowded there. ============================== Is this sentence correct? Why is 'there' used here?

  204. World history

    Name 3 countries that wanted to populate the new world.

  205. math

    between 100 and 200. . tens digit is 3 less than the hundreds digit. .ones digit 1 more than the tens digit