1. Chemistry

    An amount of 25ml of a 0.8 Molar solution of pure KNO3 and placed in a volumetric flask. Is added water until the thin volume reaches exactly 500ml. which the final concentration?

    asked by Alan on January 21, 2016
  2. chemistry

    what is the ph of a buffer made by mixing 2.00g of sodium acetate with 20.00ml of 1.20 mol/l acetic acid and adding enough water so the final volume of the mixture is 100.0 ml?

    asked by mehek on December 29, 2014
  3. chemistry

    what volume of 0.1 moldm-3 HCL acid would be required to dissolve 2.3 grams of calcium carbonate equation CaCO3+2HCL----------=CaCl2+CO2+H20 (WATER)

    asked by aisha on September 25, 2011
  4. chemistry

    If 3.65 g of a compound having a molecular weight of 481.93 g mol-1 is dissolved in water to make a final volume of 142 mL, what is the concentration of the solution in mM? Answer to three significant figures.

    asked by julie on August 1, 2014
  5. Chemistry

    Consider 54.0 mL of a solution of weak acid HA (Ka = 1.00 10-6), which has a pH of 4.200. What volume of water must be added to make the pH = 5.500? I found HA for both and then I used C1V1 = C2V2 plugging in the concentrations of HA in C1 and C2 and 0.054

    asked by Ter on February 11, 2013
  6. physics, physics, physics!!!!!

    At a depth of 10.9 km, the Challlenger deep in the Marianas Trench of the Pacific Ocean is the deepest site in any ocean. In 1960, Donald Walsh and Jacques Piccard reached the challenger deep in the bathy scaph trieste. Assuming that sea water has a

    asked by james on January 28, 2007
  7. Math 3 grd

    How do I find the area and the volume of a prism using base-10 blocks? well, the area is found by multiplying length x width. so it would be 10 x 10, which equals 100. The volume, however, isn't much more work to find the answer. Volume=length x width x

    asked by Miquela on May 2, 2007
  8. physical sci

    Water can be found as ice, liquid water, and water vapor. Which of these types of water has the least density?

    asked by phantom runner on April 24, 2017
  9. Chemistry

    It turns out that the Van Dar Waals constant b is equal to four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of the volume in a container actually occupied by Ar atoms: a) at STP b)

    asked by Anonymous on January 9, 2011
  10. Chemistry

    A solution household bleach contains 5.25% NaClO, by mass. Assuming that the density of bleach is the same as water(1.0g/ml). Calculate the volume in mL of household bleach that should be diluted with water to make 500.0 ml of a pH= 9.80 solution. Here's

    asked by Katherine on April 20, 2012
  11. PHYSICS

    A car is traveling along a road, and its engine is turning over with an angular velocity of +199 rad/s. The driver steps on the accelerator, and in a time of 14.2 s the angular velocity increases to +263 rad/s. (a) What would have been the angular

    asked by JOHN on October 29, 2010
  12. Physics

    A car is traveling along a road, and its engine is turning over with an angular velocity of +190 rad/s. The driver steps on the accelerator, and in a time of 13.0 s the angular velocity increases to +300 rad/s. (a) What would have been the angular

    asked by Sanz on November 1, 2014
  13. Math

    Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest

    asked by Anonymous on October 7, 2014
  14. Geometery

    A water storage tank is shaped like a circular cylinder with half of a sphere at each end. Find the volume of the tank if the cylindrical section is 100 cm long with a 40cm diameter. Use 3.14 for ~~ Be sure to round the final answer to two decimal places.

    asked by Hayley R. on March 1, 2007
  15. science

    Three equal-sized pans containing distilled (pure water),ocean water (3 percent salt),and water from the Great Salt Lake in Utah (about 20 percent salt)are placed in freezer. Which of the following would be the order in which these three liquids would

    asked by kizzi on June 4, 2016
  16. CALCULUS HELP NEEDED ASAP!

    Having a lot of trouble with this one: Q) Tidal volume is the volume of air displaced in the lungs between inhalation and exhalation (the amount of air in a breath). The residual volume is given by the remaining in the lungs even after the deepest

    asked by Anonymous on October 8, 2014
  17. science help pls pls

    Which of the following is a myth about water conservation? An important part of water conservation is preventing water pollution. Buying bottled water conserves more water than drinking from the tap. Air-drying clothes conserves more water than using an

    asked by Oscar on April 5, 2016
  18. physics

    A submerged submarine alters its buoyancy so that it initially accelerates upward at 0.325 m/s^2. What is the submarine's average density at this time? (Hint: the density of sea water is 1.025*10^3 kg/m^3). The difference of densities will give you the net

    asked by Anonymous on May 9, 2007
  19. physics

    An ice cube floats with 1/9 of its volume below the surface of water, calculate the density of ice.

    asked by anonymous on May 31, 2016
  20. Chemistry

    Please help me understand!..If you have 100.0mL of a 30.0% aqueous solution of ethanol, what volume of water is in the solution?

    asked by Emily on March 8, 2011
  21. Chemistry

    3.13g if CuNO3 is dissolved in water to make a 0.270 M solution. What is the volume of the solution?

    asked by Jason on November 22, 2010
  22. CHM 152

    A 0.750 L bottle of a French Merlot is said to contain 12.5% alcohol by volume. How much of the liquid, in mL, in the bottle is water?

    asked by Car on June 8, 2010
  23. chemistry

    12M HCl + H20→ 5M HCl How much water? Total Volume= Pls I need this tomorrow

    asked by jack on September 1, 2016
  24. math

    a circular pond has a diameter of 1.8m and a depth of 55cm. if we fill the pond with water, what is its volume

    asked by michelle on January 15, 2011
  25. Chemistry-Urgent

    What is the percent by volume of ethanol in a solution that contains 26 mL of ethanol dissolved in 113 mL of water? explain please

    asked by Brianna on February 19, 2017
  26. Chemistry

    A 11.8 mL sample of a HCl solution has a pH of 2.000. What volume of water must be added to change the pH to 4.000?

    asked by Kaleen on November 23, 2011
  27. Dalton's LAw

    what is volume of hydrogen at STP of hydrogen collected over water at 10 degrees and 105.5 kPa

    asked by Anonymous on February 6, 2012
  28. Horizon

    What would the final volume of water be if 80.0 kJ were added to a 100.0 mL sample at 100.0 degrees Celsius?

    asked by H on April 29, 2010
  29. Chemistry

    what volume of water must be added to 10ml og 6.0M NaOH to make a solution that is .30 M in NaOH How do I solve for this

    asked by Lauren on October 25, 2007
  30. PHYSICS

    A duck is floating on a lake with 22% of its volume beneath the water. What is the average density of the duck?

    asked by Anonymous on November 17, 2015
  31. chemistry

    if air contains78% of nitrogen by volume what is the solubility nitrogen in water at 25 degree celcius?

    asked by minte on October 20, 2013
  32. testing of materials

    Could you please show me how to solve this problem ! Volume= 1.00cm^3,mass of water= 0.49 g, dry mass= 1.32 g, RD=2.70

    asked by michael on February 8, 2011
  33. Chemistry

    What volume of water should be added to 500 mL of a 1.0 mol/L CuSO4 solution to dilute it to 0.5 mol/L?

    asked by Ashleigh on May 29, 2012
  34. 11th grade ..CHEMISTRY

    This is a Quantitative Redox titration. (KMnO4) = 1.8 G.. 500 ML after the experiment we had to record the data of the 3 trials. 1. Trial - VolUme FeSO4 = 10.00 Ml - VOlume KMnO4 11.00 Ml 2. Trial - VolUme FeSO4 = 10.00 ML - VOlume KMnO4 11.15 Ml and we

    asked by Komal on November 5, 2008
  35. Chemistry

    Just having some trouble with this chemistry problem.. Thanks for help! Toxic carbon monoxide (CO) gas is produced when fossil fuels such as petroleum burn without enough oxygen. The CO can eventually be converted to CO2 in the atmosphere. Automobile

    asked by Sara on January 15, 2013
  36. Environmental Science

    Many areas of the world that do not have adequate fresh water have become habitable because a.rainfall patterns have changed b.water management projects have diverted water to the areas c.icebergs have been towed in to provide fresh water d.people have

    asked by Mack on April 20, 2007
  37. Analytical Chemistry

    Predict the effect (Increase, Decrease, No effect, Indeterminate)and explain why 1. Condition: In the determination of water hardness, the water sample contained appreciable amount of ferric ions Paameter: ppm CaCO3 2. Condition: Instead of MgCl2*H2O,

    asked by :kkk: on August 31, 2007
  38. science

    Calculate the volume of distiled water to prepare 10%w/v solution of solute if 8g of the solute is to be used.

    asked by yui on March 4, 2011
  39. chemistry

    8.22 g of CuNO3 is dissolved in water to make a 0.590M solution,what is the volume of the solution

    asked by Nicholas on March 17, 2014
  40. chemistry

    what volume of water should be added to 300ml of HNO3 0.25M to obtain HNO3 0.2M?

    asked by gaby on September 7, 2012
  41. Physics

    A Canada goose floats with 26.1% of its volume below water. What is the average density of the goose?

    asked by Max on April 20, 2010
  42. chemistry

    What is the combined volume when 10 cm3 of acetone are added to 10 cm3 of distilled water?

    asked by blannca on November 3, 2010
  43. Physics

    A Canada goose floats with 26.1% of its volume below water. What is the average density of the goose

    asked by Max on April 23, 2010
  44. Physics

    Ice floats with one ninth of its volume above water. What is the relative density of ice?

    asked by Kity on November 4, 2016
  45. chemistry

    If 5.29 g of CuNO3 is dissolved in water to make a 0.370 M solution, what is the volume of the solution?

    asked by Rasschael on November 18, 2015
  46. chemistry

    if 200mg of HCl is added to water to achieve a final volume of 1.00 L, what is the final pH?

    asked by Maria on January 15, 2011
  47. chemistry

    One has 100.0 grams of water and 45.0 grams of ice in a flask at 0 C. (a) what is the total volume?

    asked by Anonymous on March 6, 2010
  48. chemistry

    If 7.63 g of CuNO3 is dissolved in water to make a 0.180 M solution, what is the volume of the solution?

    asked by Felicia Fancybottom on February 7, 2015
  49. science

    What is the concentration in % by volume of acetic solution 50 ml acetic acid and 400 ml water

    asked by Ryuta on June 12, 2013
  50. chemistry

    If 8.16 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?

    asked by Dustin on November 9, 2014
  51. Chemistry

    How much volume (in mL) of 0.75 M K2SO4 (aq) and water must be mixed to prepare to 150.0 mL of 0.10 M K2SO4 solution? Thanks!

    asked by Mike on April 16, 2012
  52. Science

    16g of bone displaced a volume of 8mL of water.what is the density of the bone?

    asked by lala on August 24, 2011
  53. chemistry

    If you have 200.0 mL of a 30.0% aqueous solution of isopropyl alcohol, what volume of water is in the solution?

    asked by leilah on March 27, 2011
  54. Chem Scc

    5.82 g of CuNO3 is dissolved in water to make a 0.240 M solution. What is the volume of the solution?

    asked by Anonymous on July 9, 2012
  55. Math

    A water tank is 5m tall and has a diameter of 3,5m.calculatethe capacity (volume) of the tank

    asked by Anonymous on August 28, 2016
  56. Chemistry

    If 8.87 g of CuNO3 is dissolved in water to make a 0.500 M solution, what is the volume of the solution?

    asked by Dalton Steele on December 11, 2016
  57. Psychology

    what were the implications of Babbage's calculating engine for the new psychology?

    asked by Kate C on January 20, 2013
  58. physics - engine

    A car V8 has a bore of 4 in. and a stroke of 2.5 in., what is the engine size?

    asked by kim on September 26, 2015
  59. Social Studies

    How did the invention of the steam engine affect transportation?

    asked by Neji Hyuga on December 20, 2018
  60. physics

    A car can go from 0 to 85 km/h in 10 s. If the engine delivered twice the power, how many seconds would it take?

    asked by Elle on March 28, 2011
  61. Math

    A rocket engine, 2.39 cross 10−5watts/cm2

    asked by Anonymous on February 9, 2014
  62. INFORMATION LITERACY

    What do you like and dislike about Bing(common search engine).

    asked by DALE on March 23, 2016
  63. physical science

    diagram the motion of pistons in a four stroke engine.

    asked by chaundra on May 4, 2009
  64. Chemistry

    An unknown amount of water is mixed with 310 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 58.2 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution. Answer in units of M

    asked by ag on March 19, 2012
  65. Chemistry

    An unknown amount of water is mixed with 350 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 51.2 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution. Answer in units of M

    asked by Anonymous on May 13, 2013
  66. Chemistry

    An unknown amount of water is mixed with 310 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 58.2 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution. Answer in units of M

    asked by ag on March 19, 2012
  67. Chemistry

    What volume of 14.1M HBr is required to make 250mL of 1.25M HBr solution by dilution with water?

    asked by Kat on February 4, 2011
  68. chemistry

    150 mL of a 4.00 molar NaOH solution is diluted with water to a new volume of 1.00 liter. What is the new molarity of the NaOH?

    asked by vee on October 5, 2011
  69. Chemistry

    A 50 mL sample of 8% (m/v) NaOH is diluted with water so that the final volume is 200 mL...what is the final concentration and how did you figure it out?

    asked by Curlyqty on May 9, 2011
  70. Chemistry

    What volume of liquid water is produced from the combustion of 10.00 L of octane, C8H18? (density of octane=0.692 g/mL

    asked by Kelly on July 25, 2011
  71. Chemistry

    If 0.0365 mol of CaCl2 is dissolved in water to make a 0.640 M solution, what is the volume of the solution?

    asked by Tsomo on October 5, 2016
  72. Chemistry

    Suppose you titrated a sample of distilled water with EDTA, approximately what volume of EDTA would be required?

    asked by Julie on October 1, 2012
  73. Chemistry

    Prepare 0.03 mole fraction solution of NaOH in water Total volume of solution is 100ml

    asked by Faisal on October 21, 2016
  74. Chemistry

    Making a solution at 100•C What would be the smallest volume of water needed to dissolve 12.0g of KNO3 at 100•C

    asked by Shelly on September 16, 2017
  75. math

    which has greater volume? a) 1.0 kg of feathers or 1.0 kg of lead b) 100 g of gold or 100 g of water c) 1.0 L of copper or 1.0 L or mercury

    asked by Jack on August 23, 2010
  76. science

    If an object has a mass of 56g and a volume of 22cm', will the object float in water? explain your answer.

    asked by viv on September 27, 2016
  77. physics

    A toy boat has a volume of 0.0005m^3. It has a mass of 450 grams. How much of the boat is under fresh water?

    asked by Christina on January 2, 2015
  78. Chemistry

    what is the pH and pOH of a solution made by adding water to 15 grams of HCl until the volume of the solution is 2500mL?

    asked by Anonymous on April 5, 2014
  79. Ps 327x math

    A spherical tank has a radius of 60 centimeter. Find the maximum volume of water the tank can hold.

    asked by Tyrell on November 22, 2015
  80. Chemistry

    what is the pH and pOH of a solution made by adding water to 15 grams of HCl until the volume of the solution is 2500mL?

    asked by Lena on April 5, 2014
  81. science

    what is the acceleration of a small metal sphere as it falls through water? sphere weighs .28 n, volume is 13cm^3

    asked by Anonymous on January 30, 2011
  82. Biology

    1. Which of the following is a biotic factor that might affect the life of a water-dwelling organism? A. Temperature of the water B. Speed of water current C. Pollutions in water D. Bacterial population in water My guess: D? 2. Which of the following

    asked by Anonymous on September 13, 2009
  83. Chemistry

    You add 7.326g of solid CaCl2 to 45.5 mL of water in a coffee cup calorimeter and measure as the temp. Increase from 22.6 C to 41.5 C. Specific heat water is 4.184 J/ g.C and the density of water is 0.9977 g/mL. Find the mass of water. PLEASE HELP ME!!!

    asked by Dania on October 20, 2016
  84. Physics

    It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.20 m). As one goes deeper and deeper in the ocean, the pressure increases by 1.0*10^4 Pa for every meter below the surface. If a diver goes down 33.0 m (a bit

    asked by Christina on November 14, 2007
  85. Calc help - check rest of answers, please?

    4. Find the tangent line approximation, L(x), of f(x)=x^2/3 at x = 8. L(x) = 4/3x-20/3 L(x) = 2/3x+8 L(x) = 4(x-8) L(x) = 1/3x + 4/3 *L(x) = 4/3x - 8/3 5. A balloon is rising at a constant speed of 5 ft/sec. A boy is cycling along a straight road at a

    asked by Samantha on December 19, 2013
  86. Math

    The size to which a pumpkin grows while on the vine is probably problematic, as our current visiting POLY pumpkins demonstrate. What if we were watching a pumpkin on the vine grow over time and that its shape was totally spherical. Now for your five (5)

    asked by Tho on April 20, 2013
  87. chemistry

    Why is water essential to living things? A. Water is essential because it is an inorganic compound. B. Water is essential because it contains hydrogen and oxygen atoms. C. Water is essential to many of the chemical reactions that occur in the body. D.

    asked by I NEED HELP FAST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! on May 1, 2014
  88. amerian history

    What was the goal of Americanization programs in settlement houses? A. to combat the belief that native-born white Americans were superior to newcomers B. to help newcomers learn English and adopt American dress and diet C. to blend traditions from

    asked by Anonymous on April 20, 2016
  89. Physics

    Suppose the density of the Earth was somehow reduced from its actual value to 1300 kg/m3. What would be the value of g, the acceleration due to gravity, on this new planet? Assume the radius does not change. I know that density = mass/volume & the volume

    asked by Anon14 on September 20, 2011
  90. Chemistry

    A 8.07g sample of impure Ag2O decomposes into solid silver and O2(g). If 395mL of O2(g) is collected over water at 25 degrees Celsius and 749.2 mmHg barometric pressure, then what is the percent by mass of Ag2O in the sample? The vapor pressure of water at

    asked by Kim on September 30, 2017
  91. PHYSICS Centrifugal force

    someone swings a bucket of water in a vertical circle. Describe the water's motion to another person? or How would you? & also how to explain the motion of the water to them? How come the water didn't fall on the persons head? A: Centrifugal force causes

    asked by Anonymous on March 23, 2016
  92. Physics!! Help

    someone swings a bucket of water in a vertical circle. Describe the water's motion to another person? or How would you? & also how to explain the motion of the water to them? How come the water didn't fall on the persons head? A: Centrifugal force causes

    asked by Tina on March 24, 2016
  93. physics

    An automobile tire is rated to last for 60,000 miles. To an order of magnitude, through how many revolutions will it turn? I don't know what circumference i should use for 1 rev

    asked by bubble on January 10, 2010
  94. physics

    what is the maximum speed at which automobile can round a curve of 100 ft radius on level if the coefficient of friction between the tires and the road is 0.35?

    asked by mee on September 18, 2012
  95. physics

    The brakes on your automobile are capable of creating acceleration of 14 ft/s2. If you are going 66 mi/hr and suddenly see a state trooper, what is the minimum time required to get your car to 55 mi/hr?

    asked by Anonymous on September 1, 2014
  96. economics 212

    Which of the following pairs are examples of substitutes? a. popcorn and soda b. automobile and bicycles c. boats and fishing tackle d. wine and cheese

    asked by Anita fields on December 13, 2010
  97. Science

    Which component of the technological system is achieved when an automobile airbag inflates? A. Input B. Feedback C. Process D. Output Is the answer B?

    asked by Gwen on September 16, 2014
  98. Managerial Ecomonics

    If the goal of society is to get the most benefit from its limited resources, then why not ignore economic efficiency and build the energy-saving automobile?

    asked by Cindy on January 7, 2013
  99. Physical science

    Determine the centripetal acceleration of an automobile making a tight turn that has a radius of 256 m, if the is traveling at a velocity of 25.0 m/s as it turns.

    asked by Shirley on January 7, 2017
  100. PHYSICS

    An automobile of mass 1200kg accelerates from rest to a speed of 20.0m/s in 12.0 seconds. What is the magnitude of the net force acting on the auto?

    asked by Cassie on December 6, 2010