1. Math

    Peanuts, walnuts, and cashews are mixed by volume in the ratio 5:3:2, to make a party snack. The number of cups of walnuts needed to make 12 cups of party mix are between: a) 1 and 2 b) 2 and 3 c) 3 and 4 d) 4 and 5 Math - Ms. Sue, Monday, February 20,

    asked by Terrence on February 20, 2017
  2. chemistry

    Lead iodide, PbI2, has a Ksp in water of 7.1e-9 M3 at room temperature. Calculate the solubility of PbI2 in water. Express your answer in grams per liter. What is the solubility of PbI2 in 0.1 M NaI (aq)? Express your answer in grams per liter.

    asked by Dick on December 21, 2013
  3. chem please help drbob222

    Two objects A and B have the same mass and the same specific heat. Object A is heated from 30°C to 70°C and object B is cooled from 70°C to 30°C. How are the thermal energies of the two objects related after the temperature change has occurred? A. The

    asked by Morgan on November 22, 2014
  4. Math

    I've been working on this problem for HOURS and I still can't figure it out. It's due by tomorrow. And I'm so frustrated. DX I know I have to convert ounces into gallons, but I can't find a path at all. DX Here is the question: I need to mix the gas with

    asked by Kiki on November 17, 2008
  5. Chemistry please check

    1. An ionic compound solution is a(an)________ of electric current. non-conductor absorber emitter good conductor reverser ans: good conductor 2. Hydrogen bonding in water accounts for water's higher than expected boiling temperature the fact that ice

    asked by Mary on February 24, 2008
  6. Physics

    A person on top of a wall of height 3.4 m stands near the edge, leans over and tosses a putty wad of mass 1.3 kg vertically into the air as shown in the figure below. The wad reaches a maximum of 4 m above the top of the wall. The wad then comes down and

    asked by kelly on February 20, 2011
  7. math

    A tree that is 3 feet tall is growing at a rate of 1 ft per year. A 5 ft tree is growing at a rate of 0.75 ft per year. The ordered pair (t, h)(t, h) represents the time, t, at height, h. Which ordered pair represents the year when the trees will be the

    asked by Jay on January 6, 2017
  8. Calculus

    1) A rectangular page is to contain 16 square inches of print. The page has to have a 2-inch margin on top and at the bottom and a 2-inch margin on each side. Find the dimensions of the page that minimize the amount of paper used. 2) A rectangular garden

    asked by Gary on March 5, 2015
  9. Chemistry

    a 20.94-g sample of an unknown metal is heated to 99.4 degrees Celsius in a hot water bath until thermal equilibrium is reached. The metal is quickly transferred to 100 mL of water at 22.0 degrees Celsius contained in a styrofoam cup. The thermal

    asked by Dalal on April 10, 2018
  10. physics

    What are the temperatures for freezing water and boiling water on the Kelvin temperature scale? a)273K for freezing water; 373K for boiling water b)0K for freezing water; 100K for boiling water c)32K for freezing water; 212K for boiling water

    asked by Kristie on March 29, 2012
  11. PHYSICS HEL ME ......................JORHO........

    The “Vomit Comet.” In Zero-gravity astronaut training equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in Figure P4.47, the air-craf climbs from 24000ft to 31000ft,where it enters a parabolic path with a

    asked by JORHO on January 9, 2013
  12. 10th grade Literature

    Ok, I have to answer questions on these 2 poems, and I can't figure them out... The Golf Links Lie So Near The Mill by Sarah N. Cleghorn The golf links lie so near the mill That almost every day The working children can look out And see the men at play.

    asked by Taryn on September 21, 2008
  13. Biology

    1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like

    asked by Becky on May 18, 2016
  14. Biology

    1. All fungi are ~photosynthetic ~heterotrophic ~autotropic ~parasitic 2. What structure is missing in the fungal hypae shown on the right side of Figure 21-5? ~cell walls ~cross walls ~nuclei ~cytoplasm 3. Which of the following is true of fungi? ~Like

    asked by Harley on May 21, 2016
  15. Check my Essay: Rock Climbing

    Rock Climbing Rock Climbing can be a tough sport, indoors or outdoors, but it can also be fun and adventurous. If you do not have the proper knowledge of clothing/equipment and techniques, then maybe rock climbing isn’t for you. Rock climbing can be

    asked by ilikezackalot on February 3, 2014
  16. Physics with Calculus

    The system shown in the figure is in static equilibrium. The rod of length L and mass M is held in an unpright position. The top of the rod is tied to a fixed vertical surface by a string, and a force F is applied at the midpoint of the rod. The

    asked by Rico on November 8, 2014
  17. english

    What is the topic sentence? Nearly everyone is familiar with the dark silhouette of the giant saguaro, its arms thrust stiffly out. However, few people have actually seen this awe-inspiring plant in its natural habitat, since it is found only in the desert

    asked by nathan on June 1, 2011
  18. physics

    NEEDS HELP PLEASE!! A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is

    asked by sam on March 2, 2015
  19. Trigonometry

    When viewing Angel Falls (the world's highest waterfall) from Observation Platform A, located on the same level as the bottom of the waterfall, we calculate the angle of elevation to the top of the waterfall to be 69.30°. From Observation Platform B,

    asked by Anonymous on June 16, 2012
  20. physics

    A 100kg shot putter is putting a shot 4kg. Just before he releases the shot, he is in the air (feet are off the ground). At this instant, the only force he exerts against the shot is an 800N horizontal force directed forward. a-what is his horizontal

    asked by aaron on March 1, 2015
  21. Trigonometry

    When viewing Angel Falls (the world's highest waterfall) from Observation Platform A, located on the same level as the bottom of the waterfall, we calculate the angle of elevation to the top of the waterfall to be 69.30°. From Observation Platform B,

    asked by Tim on June 16, 2012
  22. math check

    Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)?

    asked by tara on January 5, 2007
  23. Chemistry

    The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

    asked by Kyle on October 11, 2012
  24. Chemistry

    The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

    asked by Kyle on October 11, 2012
  25. Chemistry

    The molar enthalpy of combustion of glucose is -2803 kJ. A mass of 1.000 g glucose is combusted in a bomb calorimeter. If the calorimeter contains 875 g H2O and the bomb has a heat capacity of 457 J/C, what is the temperature increase of the bomb

    asked by Kyle on October 11, 2012
  26. Mechanics/Physics

    HW7_1B_2 : 5.0 POINTS Let's say that a cross section where you have M+max is at location x+max, and the cross section where you have M−max is at location x−max. Use the MATLAB window below to plot the profiles of stress on sections x+max and x−max,

    asked by Dude on June 30, 2013
  27. physics

    Part 1 A motorist traveling at 17 m/s encounters a deer in the road 48 m ahead. If the maximum acceleration the vehicle’s brakes are capable of is −5 m/s^2, what is the maximum reaction time of the motorist that will allow her or him to avoid hitting

    asked by amanda and leah on September 9, 2012
  28. science hw

    I cannot figure out this answer. It is confusing me a lot. I hate problems like this where all of the problems just switch beginnings and endings with each other. The combination of the sand and water makes for a ____________ _____________ because A)

    asked by josh on February 14, 2008
  29. AP Chemistry

    The reaction of the molecules to produce ethane is C2H4(g) + H2(g) → C2H6(g). A mechanism for this reaction is shown below: (The figures show how the ethene molecule with two hydrogen molecules attached 'binds' to

    asked by Sophie on April 1, 2018
  30. physics

    Calculate the tension in a vertical strand of spider web if a spider of mass 8.00×10−5 kg hangs motionless on it. (b) Calculate the tension in a horizontal strand of spider web if the same spider sits motionless in the middle of

    asked by Anonymous on May 21, 2017
  31. Calculus

    At the scene of an accident, there are skid marks which are 200 feet long showing where a car put on the brakes. The driver swears that he was obeying the speed limit. If we assume that the car braked with a constant deceleration of 16ft/sec^2. We can

    asked by Naomi on April 4, 2017
  32. Physics

    A rocket-powered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x- and y-components of the puck’s velocity. The puck starts at the origin. The graph of the X-velocity is v=8t cm/s and the

    asked by Eric on September 11, 2015
  33. physics

    A projectile of mass 0.528 kg is shot from a cannon, at height 6.7 m, as shown in the figure, with an initial velocity vi having a horizontal component of 7 m/s. The projectile rises to a maximum height of 3.8 m above the end of the cannon’s barrel and

    asked by Anonymous on January 22, 2015
  34. physics

    A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

    asked by Idali on April 11, 2017
  35. physics

    A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

    asked by idali on April 6, 2017
  36. Physics

    7.7 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 65psi. What are (a) the temperature of the gas in Celsius and (b) the average kinetic energy of a helium atom? p=65psi=4.481592E5 p=65psi=4.42atm n=7.7mol v=16=.016m^3 T =

    asked by ana on November 22, 2009
  37. physics

    A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when equilibrium is reached. Ignore the heat capacity of the container and assume this is in a calorimeter, i.e. the system is

    asked by Idali on April 4, 2017
  38. FAST MATH HELP!

    I can't remember the abbreviation for decimeter! Abbreviation: dm thanks hey.... the abb is dm.. 1. Factor 4m²+40m+100 2. The area of a circle is given by the equation A = ð(25x²+10x+1). Find an expression for the radius. 3. The bed of a pond can be

    asked by Jenna on March 7, 2007
  39. Math

    I need help with these problems. I've gone over the material a lot, and I just don't understand! Please help fast, test is tomorrow! 1. Factor 4m²+40m+100 2. The area of a circle is given by the equation A = ð(25x²+10x+1). Find an expression for the

    asked by Marie on April 12, 2007
  40. science

    h t t p: / / tinypic . co m/r/f2vw1w/3 In the link above (take out the spaces) there is supposed to be a picture representing a foodweb. 1. Which letter is the producer? Is it A? 2. I'm not sure what B and C would represent? A. producer B. primary consumer

    asked by casey on August 30, 2009
  41. physics

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 13, 2012
  42. physics need help plz

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 8, 2012
  43. physics

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 7, 2012
  44. Physics

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 11, 2012
  45. physics

    An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6-kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical

    asked by Akbar on June 11, 2012
  46. English

    This is the title of my ESSAY paper: United States vs. Denmark: Which health system works better for the citizens of the nations? I need to put this into a title for my paper (

    asked by rosa on June 6, 2011
  47. CHEM HELP!

    A car burning lead-free fuel has a catalytic converter fitted to its exhaust. On analysis its exhaust gases are shown to contain small quantities of nitrogen oxides. Which modifications would result in lower exhaust concentrations of nitrogen oxides? 1 an

    asked by Ariana on September 30, 2014
  48. Chemistry

    CH4 (g)+ H2O (g) --->/

    asked by Student on February 29, 2016
  49. Chemistry

    CH4 (g)+ H2O (g) --->/

    asked by Student on February 29, 2016
  50. algebra

    Please can someone help me with these? factoring 2x^2+5x-3 and 3x^2-15x+12 Thanks in advance!!! well rose. you nedd to distrubte the first one or find the gcf but there anit one, the second one do the same thing. for further questions just ask. How can I

    asked by Rose on May 2, 2007
  51. Physics

    Can someone please give me some insight on how to work this problem? A rotating door is made from four rectangular glass panes, as shown in the drawing. The mass of each pane is 85 kg. A person pushes on the outer edge of one pane with a force of F = 63 N

    asked by Jim on March 21, 2007
  52. physic

    The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2l=2m and radius R=1cm and a sleeve of steel of length L=1m and thickness R=1cm surrounding the aluminum core in the CD section of the bar. The Young’s moduli

    asked by asas on May 1, 2013
  53. AP Chemistry Help!

    I had to conduct an experiment to find the enthalpy of reaction for : 4Fe + 3O2 + 6H2O ----> 4Fe(OH)3 In the experiment , I started with an inital temperature of 22.3 C and edned with 36.7 C so the delta T is +14.4C. Now it's telling me to calcualte the

    asked by Jessica on November 1, 2016
  54. ecology

    An air conditioner lowers the temperature of the surrounding air. water condensed from the air is most likely to run out of the bottom water hose of a automobile air condition when the air entering the air conditioner. a- contains dust and pollen b- is

    asked by ivonne hurtado on July 18, 2009
  55. physics

    A skier starts from rest at the top of a frictionless incline of height 20.0 m, as shown in the figure. At the bottom of the incline, the skier encounters a horizontal surface where the coefficient of kinetic friction between skis and snow is 0.208.

    asked by josef on March 6, 2015
  56. chemistry

    you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water at 100 degree celsius,you want to combine both raise the temperature to 100 but boil off only 50 ml to gas phase keep the rest as

    asked by treasa on May 30, 2014
  57. english

    English III – Unit 1: The Uses and Varieties of English PROJECT: ETYMOLOGY Instructions Look up the following words. Give the etymology of each. State what kind of term, such as mathematical, scientific, political science, history, etc. Include the name

    asked by OdysseyWare on September 5, 2012
  58. physics

    What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1

    asked by nathaniel on July 23, 2013
  59. physics

    What is the wind speed in m/s required to keep a great white shark suspended in midair during a summer day on the California beach? Details and assumptions Model the shark as a horizontal cylinder 6 m long and 1 m in diameter. The air is at a pressure of 1

    asked by andy on July 24, 2013
  60. A.P Chemistry

    A rigid 5.00 L cylinder contains 24.5g of N2(g) and 28.0g of O2(g). (a). Calculate the total pressure, in atm, of the gas mixture in the cylinder at 298 K (b) The temperature of the gas mixture in the cylinder is decreased to 280 K. Calculate each of the

    asked by Brianna on October 22, 2006
  61. ap chemistry :(

    consider the reaction C6H14 + 9.5O2 yields 6CO2 + 7H2O at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no

    asked by sam on October 18, 2012
  62. Algebra

    The water level, w, in feet, of a river after a rainstorm is a function of the time, t, in hours, since the storm began. The table below shows the water level readings collected at different times. Hours Since Storm Began (t) Water Level (w) 1 18.7 1.5

    asked by Klauus on March 8, 2019
  63. Math/Trig

    From an observation tower that overlooks a runway, the angles of depression of point A, on one side of the runway, and point B, on the opposite side of the runway are 6 degrees and 13 degrees respectively. The points and the tower are in the same vertical

    asked by Renee on February 12, 2015
  64. math

    The velocity(in feet per second) of a bouncing ball was recorded every second. The table shows the velocity for each second. Time(sec):|1|2|3|4|5| Velocity(ft/sec)|-15|-6|2|10|-11| What is the average velocity of the bouncing ball over 5 seconds? What is

    asked by Kai-Cin on October 28, 2013
  65. Chemistry-

    PCl5 (g) PCl3 (g) +Cl2 what is the property that might be observed in order to determine when equlibrium has been reached? The question is a little vague. Is the property visual or some other property? I don't think vision (color) will work for PCl5 is a

    asked by Mike on May 2, 2007
  66. chemistry

    Here is the question: A sample of ethanol, C2H5OH, weighing 2.84g was burned in an excess of oxygen in a bomb calorimeter. THe temperature of the calorimeter rose from 24C to 33.73C. If the heat capacity of the calorimeter and contents was 9.63 kj/C. What

    asked by Capacino on June 24, 2009
  67. trig

    L ii i i i i i i i i A i i i i i i i i i i 4000 miles i i i i E ii right triangle have to find side EL. The range of a lighthouse is the maximum distance at which its light is visible. In the figure, point A is the farthest point from which it is possible

    asked by Taylor on October 27, 2011
  68. CHEMISTRY- answer check

    A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

    asked by lulu on October 9, 2010
  69. trig

    a building 60 feet high. from a distance at point A on the ground, the angle of elevation to the top of the building is 40 degree. from a little nearer at point B, the angle of elevation to the top of the building is 70 degree. What's the distance between

    asked by Anonymous on March 18, 2016
  70. Algebra

    Juan and Anita are standing together in the schoolyard. Juan, who is 6 feet 2 inches tall, casts a shadow that is 54 inches long. At the same time, Anita casts a shadow that is 46 inches long. How tall is Anita?: a. 86.4 in. b. 5 ft 3 in. c. 5 ft 1 in. d.

    asked by Mike on March 11, 2008
  71. math

    Juan and Anita are standing together in the schoolyard. Juan, who is 6 feet 2 inches tall, casts a shadow that is 54 inches long. At the same time, Anita casts a shadow that is 46 inches long. How tall is Anita?

    asked by -- on September 22, 2007
  72. HELP MS.SUE MATH 5TH GRADE

    Theresa wanted to find the height of her school's flagpole in inches. Theresa is 5 feet and 2 inches tall. She estimated that the flagpole was about 10 times her height, so she created the formula below to find the flagpole's height. height = (12 x 5 + 2)

    asked by Eden S. on December 15, 2013
  73. Chemistry

    What is the molar heat of reaction? When 0.732 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 119C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC.

    asked by Chris on February 17, 2010
  74. physics

    2. Rod A, which is 30 cm long, expands by 0.045 cm when heated from 0°C to 100°C. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long is made up of the materials of rod A and B, connected end to

    asked by Anonymous on February 13, 2012
  75. physics

    What is the final equilibrium temperature when 40.0 grams of ice at 0°C is mixed with 5.00 grams of steam at 120°C? The specific heat of ice is 2.10 kJ/kg °C, the heat of fusion for ice at 0°C is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg °C,

    asked by athirah on March 5, 2016
  76. Math

    The top horizontal edge of the rectangle measures 17 centimeters, the left vertical edge of the rectangle measures 22 centimeters, and the bottom horizontal edge measures 17 centimeters. The left vertical leg is on the right edge of the rectangle, with v

    asked by Sliverstream on March 18, 2019
  77. Science

    To create less waste in the first place is to a. reduce (?) b. reuse (?) c. recycle d. incinerate Hi. So, for this question, i completely understand what it's asking but i can't figure out which one it would be. Incinerate means to burn waste, but that

    asked by Anon on November 9, 2017
  78. Grade 12 Physics

    A young woman named Sassy Sue purchases a sports utility vehicle that can accelerate at the rate of 4.88m/s^2. She decides to test the car by dragging with another speedster, McSpeedy. Both start from rest, but experienced McSpeedy leaves 1.0s before Sue.

    asked by Haley on September 12, 2007
  79. math

    3 MEN GO INTO A MOTEL. THE MAN BEHIND THE DESK SAID THE ROOM IS $30, SO EACH MAN PAID $10 AND WENT TO THE ROOM. A WHILE LATER THE MAN BEHIND THE DESK REALIZED THE ROOM WAS ONLY $25, SO HE SENT THE BELLBOY TO THE 3 GUYS' ROOM WITH $5. ON THE WAY, THE

    asked by bo on June 7, 2007
  80. Math

    The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit. The maximum height of the golf ball occurs at x = 2. For up to 2.5 s after the ball is hit, its height is increasing. The maximum height of the golf ball

    asked by crambles on March 6, 2018
  81. Poetry

    Can you please revise my sonnet for me? Nature: When I go out into nature, what do I see? There are plenty of things on a warm summer day It might be a bird, it might be a bee Or it might be a child engaged in play. I can feel the grass on my feet, green

    asked by mysterychicken on November 2, 2008
  82. Chemistry

    For the reaction NO2(g) + NO(g) = N2O3(g) If at particular temperature, K was 575 and equilibrium concentration of N2O3(g) was 2.5 M, calculate the equilibrium concentrations of NO2(g) and NO(g) if they both had the same initial concentrations. i have my

    asked by Sara on September 25, 2011
  83. Physics

    A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 14.0 N, applied parallel to the incline, is just sufficient to pull the block up

    asked by Eden on October 17, 2010
  84. Superhard Riddle

    I need to solve a riddle but I can't figure it out. Apparently love/happiness/purpose is wrong! "Every single person that exists has had some of me and wanted some of me, but I am different for everyone. Sometimes I will never be found and sometimes I

    asked by the brainbusted on February 2, 2007
  85. Precalculus

    There are 4 rectangular corrals of identical dimensions along the back wall of an existing barn using 200 ft of fencing. The diagram has 4 rectangular corrals attached together but fencing is not needed on the back wall of the barn. The barn is above the 4

    asked by Cole on October 5, 2012
  86. Chemistry

    A basketball is inflated in a garage at 25 degrees Celsius to a gauge pressure of 8.0 psi. Gauge pressure is the pressure above atmospheric pressure, which is 14.7 psi. The ball is used on the driveway at a temperature of -7 degrees celsius and feels flat.

    asked by Alexandria on December 28, 2006
  87. chem

    Ca(H2PO4)2 and NaHCO3 are ingredients of baking powder which react with each other to produce CO2, thereby causing dough or batter to rise: Ca(H2PO4)2 (s) + NaHCO3 (s) -----> CO2 (g) + H2O (g) + CaHPO4 (s) + Na2HPO4 (s) (unbalanced) If the baking powder

    asked by fru on September 22, 2008
  88. Physics

    A sealed container of volume 0.10 m3 holds a sample of 3.0 x 10^24 atoms of helium gas in equilibrium. The distribution of speeds of helium atoms shows a peak at 1100 ms-1. Caluculate the temperature and pressure of the helium gas. (helium atom 4.0 amu)

    asked by Oli on May 19, 2008
  89. Pre-Calc

    A vehicle has an engine that is connected directly to a gear box. In the highest gear, a 2 inch radius gear is turning a 14 inch diameter gear. This gear is connected to the drive shaft. The drive shaft attaches to a wheel and a tire that measures 2 and

    asked by Caitlynn on September 13, 2016
  90. Math

    Help pls A number cube is rolled 450 times. The number 3 comes up 67 times. a. What is the theoretical probability of rolling a 3? Write your answer as a fraction in simplest form b. What is the experimental probability of rolling a 3? Write your answer as

    asked by BlueJay-_- on May 21, 2018
  91. physics

    A square bar with a mass of 0.830 kg and 19.3cm long (l) rests on two parallel horizontal rails that are 18.0cm apart (d) and 120.0cm long (L) as shown in the figure. (By horizontal it is meant that the rails lie in a plane perpendicular to the local

    asked by Trisha on February 20, 2015
  92. science

    A hot air balloon descends from a pressure of 380 mm Hg to 760 mm Hg and at the high altitude has a volume of 1,000 cubic meters. If the temperature starts at 50 degrees C and changes to 25 degrees C, the new volume will be: a. 100.0 x 50 x 760/25 x 380 b.

    asked by pat on October 4, 2013
  93. chemistry 106

    Dry air near sea level has the following composition by volume: N2, 78.08 percent; O2, 20.94 percent; Ar, 0.93 percent; CO2, 0.05 percent. The atmospheric pressure is 1.00 atm. (Hint: Since volume is proportional to the number of moles present, mole

    asked by Tanisha on March 1, 2010
  94. Physics (BioPhysics)

    You are bending your upper body forward, while your legs remain perfectly straight and their center of gravity remains over the back of your feet (see cartoon below). What is the maximum angle  you can lean forward by without tipping over? Assume that

    asked by Phillip on February 15, 2015
  95. math

    If Swin uses tje equation S=25w+300 to figure out how much money she has in the bank, where w is the number of weeks since she opened the account. Which list shows the pattern of how muchmoney Swin could have starting from the time she opened the account?

    asked by Anonymous on March 31, 2010
  96. biology -nervous system

    According to the book, "Surviving the Extremes" ch. High Altitude, explain the following: PS-its ok if you've never read it but aslong as you can answer the qeustions well. ok here there are: 1-Why is so much heat lost from, head, hands, feet? 2-Why would

    asked by Sara on December 6, 2009
  97. vocabulary

    what does frustrastion mean? excuss my spelling. Frustration is the feeling that you get when you try to do something and can't. You may feel frustration when you can't figure out how to do a math problem. You may feel frustration when you're shooting

    asked by sam on August 22, 2005
  98. CHEMISTRY

    One mole of H2O(g) at 1.00 atm and 100 degrees C occupies a volume of 30.6 L. When one mole of H2O(g) is condensed to one mole of H2O(l) at 1.00 atm and 100 degrees C, 40.66 kJ of heat is released. If the density of H2O(l) at this temperature and pressure

    asked by Anonymous on July 14, 2010
  99. Chemistry

    A volatile liquid sample is placed in an Erlenmeyer flask that has been sealed except for a tiny hole that allows vapor to escape. Upon heating, the liquid is converted to vapor that fills the flask. Cooling the flask allows the vapor to condense back to

    asked by Ceamus Angelina on May 8, 2018
  100. economics

    I really have to figure out the answers to these questions and i don't know where to start. I don't know how to draw the marginal benefit and marginal cost curves for this question. a.Sketch a marginal benefit and marginal cost diagram, with “billions of

    asked by G on September 15, 2006