1. Chemistry

    To what volume must 1580mL of 0.2005 N solution be diluted so that the resulting solution will be 0.1899 M? How much water will be needed in the dilution?

    asked by Summer on January 20, 2014
  2. physics

    The surface area and the average depth of the Pacific Ocean are 1.8 x 10 8 km 2 and 3.9 x 10 3 m, respectively. Calculate the volume of water in the ocean in liters.

    asked by Latrese on September 26, 2011
  3. osu

    a 50.0 ml sample of a 15% (m/v) solution of H2SO4 is added to water to give a final volume of 250.0 ml. What would the final concentration be?

    asked by Kat on November 23, 2010
  4. chemistry

    A steel block has a volume of 0.08 m and a density of 7,840 kg/m. What is the force of gravity acting on the block ( the weight ) in water?

    asked by Anonymous on August 13, 2011
  5. Math

    A cone is 14cm deep and the base radius is 4.5cm. Calculate the volume of the water that will fill the cone

    asked by Kayode on March 30, 2016
  6. Chem

    The molar weight of MgSO4 is 120.366gmol-1. What is the mass/volume percentage of a 2.5M water solution of MgSO4?

    asked by James on May 27, 2013
  7. science

    Which object is denser, 100cm cubed of wood that weights 61 grams, or 10 grams of water that has a volume of 10ml?

    asked by gg on December 21, 2011
  8. science

    A solution is prepared by mixing 90 ml of 5 M HCl and 30 ml of 8 M HNO3. Water is then added until the final volume is 1 L. Calculate the [H+], [OH-], and the pH for this solution.

    asked by polly on February 17, 2015
  9. maths

    what volume of distilled water must be added to 165mls of stock solution to make 1200mls of diluted solution

    asked by Anonymous on April 27, 2011
  10. math

    40% of k liters of acid are added to 60% of w liters of water. Write an algebraic expression for the total volume of the solution.

    asked by Anonymous on January 10, 2017
  11. Chemistry

    A hot air balloon is filled with hot air and the hot air forces the volume of the balloon to expand until the density of the gas in the balloon is less than the density of the outside air. The volume must be 20% larger than the balloon would be at STP in

    asked by KS on April 25, 2016
  12. chemistry

    what volume of water must be added to dilute 5.0 L of .50 M HCl solution into a .10 M solution?

    asked by kara on February 15, 2011
  13. chemistry

    A piper delivers 9.97 g of water at 20c. what volume does piper deliver?

    asked by Alicia on January 31, 2012
  14. Chemistry

    What is the % by volume of an alcohol solution prepared from 35 ml alcohol and 350 ml of water?

    asked by Nene on February 19, 2012
  15. Chemistry

    How much volume(mL)of 2.50 M NaOH(aq)must be added to 25.0 mL of water to produce a 1.50 M NaOH solution? Thanks!

    asked by Jack on April 23, 2012
  16. physicalscience

    The volume of a sample of water is 20 cm3. The mass of this sample is closest to

    asked by Holly on March 21, 2011
  17. Chemistry

    What is the % by volume of an alcohol solution prepared from 35 ml alcohol and 350 ml of water?

    asked by Nene on February 19, 2012
  18. science

    a body floats with only 30% of its volume out of water.calculate the density of this body.

    asked by kaunda kapalu on January 31, 2016
  19. Math

    The total amount of water in 2 containers is 35quarts. If 7 quarts gets poured from the container with less water into the continer with more water, the container with more water will have 4times as much water as the other container. How many quarts are in

    asked by Abigail on November 2, 2018
  20. AP Physics

    You go to kitchen to boil water. You pour 280 gram of water to a container, and put the container on a 293 W electric heater. Assume that all the heat from the heater is used to heat the water. The specific heat of water is 4.19 J/g ° C. As always, be

    asked by Sasami on December 3, 2009
  21. College Physics

    Finally, your friend's twin engine jet airplane lands. As it stands on the runway, you hear the sound of the engines getting louder and softer, rhythmically once every 2.3 s. The average frequency you hear is 3650 Hz. What are the differences between the

    asked by Anonymous on December 10, 2010
  22. math

    The manager of a tea shop mixes two types of teas to make a specialty blend. Alone, the teas sell for $3.99 and $8.99 per ounce. How many ounces of each type of tea should be used to make 32 ounces of a mixture that sells for $5.99 per ounce?

    asked by sean on May 29, 2014
  23. chemistry

    Can someone please help me with this one? Explain which of the following statements does not make sense: a. a role of masking tape weighs 350 micrograms b. 92 cm cubed of water was poured onto the table c. the room covers an area of 200 m cubed I was

    asked by Gloria on October 22, 2006
  24. Chemistry

    The volume of a sample of ideal gas at 25*C is 372ml. What will be the volume of the gas if it is heated at constant pressure to 50*C? What will be the volume of the gas if it is cooled to -272*C?

    asked by Josh on October 9, 2012
  25. Chemistry

    a diver swimming at a depth of 10m under the water observes that the size of his air bubbles increase in volume as they rise to the waters surface. which gas law does this relate to?

    asked by sheryl on November 6, 2015
  26. AP Chemistry

    2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g) When 0.400 mole of potassium reacts with excess water at STP, what is the volume of hydrogen gas produced? the answer is 4.48 liters but I keep getting wrong numbers! please help! Thanks!

    asked by Andrew on October 2, 2008
  27. Geometry

    A rectangular prism has a base that is 5 cm by 7 cm and a height of 12 cm. If all dimensions are doubled, what happens to the volume? A. When the dimensions are doubled, the volume is twice the original volume. B. When the dimensions are doubled, the

    asked by anon on March 2, 2014
  28. Calculus

    You have a conical tank, vertex down, which is 12 feet across the top and 18 feet deep. If water flows in at a rate of 9 cubic feet per minute, find the exact rate of change when the water is 6 feet deep. You know the rate of dV/dt (inflow), and you can

    asked by Tezuka on April 5, 2007
  29. Calculus

    A tank contains 100 grams of a substance dissolved in a large amount of water. The tank is filtered in such a way that water drains from the tank, leaving the substance behind in the tank. Consider the volume of the dissolved substance to be negligible. At

    asked by jau on March 22, 2017
  30. physics

    A high diver of mass 50.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.10 s after her feet first touch the water, what average upward force did the water exert on her?

    asked by yeen on September 22, 2012
  31. Environmental Helpp!

    Why would a 1 L bottle of water cost $1.50 whereas 1 L of gasoline currently costs about 90 cents? Discuss our current consumption of bottled water with specific emphasis on its relatively cleanliness compared to tap water, where the water comes from, how

    asked by Please Help on October 29, 2009
  32. science

    which of the following would help decrease the human ecological footprint? A.using bottled water instead of tap water B.using public transportation instead of riding in a car C.buying books instead of borrowing from the library D.using hot water instead of

    asked by Marco on December 9, 2013
  33. Physics--Newtons Second Law

    A high diver of mass 60.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 1.80 s after her feet first touch the water, what average upward force did the water exert on her?

    asked by Anonymous on March 5, 2012
  34. Chemistry

    1. Mass of flask, boiling chips, foil cap and unknown after cooling reaction 83.350g 2.Mass of flask, boiling chips,and foil cap. 82.657 3. water bath temperature C is 95.0 C 4. Barometric pressure inches of Hg 30.09 5. Accepted molar mass of unknown is

    asked by Anonymous on June 14, 2010
  35. Chemistry

    Mass of flask, boiling chips, foil cap and unknown after cooling reaction 83.350g 2.Mass of flask, boiling chips,and foil cap. 82.657 3. water bath temperature C is 95.0 C 4. Barometric pressure inches of Hg 30.09 5. Accepted molar mass of unknown is

    asked by Anonymous on June 14, 2010
  36. Physics

    By how much does the H20 pressure exceed atmospheric pressure at 3 meters below the surface of a pool with fresh H20. I don't know what equation to use. You have to figure the weight of a column of water of some height h, and horizontal area A. Weight= mg=

    asked by Kristina on March 29, 2007
  37. science

    Imagine that you fill a bucket to the top with water and then place the bucket outside in freezing weather. Which of the following describes what will happen when the water in the bucket freezes? A. The level of the water and the bucket itself will not be

    asked by Batman on February 28, 2013
  38. Chemistry

    A 5 mL sample of 50% (m/v) acetic acid (Hc2H3O2) solution is added to water to give a final volume of 25 mL....what is the final concentration?

    asked by Curlyqty on May 9, 2011
  39. chemistry

    how many grams of NaC1 would you dissolve in water to make a total volume of 500ml of solution to produce a 0.5 soution of Nac1?

    asked by Anonymous on August 31, 2011
  40. phy

    A scuba diver and her gear displace a volume of 71.0 L and have a total mass of 64.0 kg. (a) What is the buoyant force on the diver in sea water?

    asked by mas on November 4, 2010
  41. physics

    A boulder in a river has weight of 65N. It displaces a volume of water with a weight of 10N. Which is the net force on this rock? 55 N down 65 N down 75 N up 75 N down

    asked by Carter on April 17, 2012
  42. Chemistry

    Calculate the density of 150g of a 25% by wieght solution of sodium chloride dissolved in water and the volume of solution is 145ml.

    asked by Elaine on January 24, 2012
  43. Chem 121

    A solution is made by dissolving 0.35 mole of LiI in enough water to give a final volume of 260.0 mL. What is the molarity of the solution?

    asked by Barbara on July 26, 2011
  44. alegebra

    a stone is thrown into a cylindrical water tank 2 feet in diameter, causing it to rise 1.5 inches. what is the volume of the stone?

    asked by Rachael on January 15, 2009
  45. physics

    three spheres have the same volume and all float in water. Spheres A, B, and C have masses of 25g, 30g, and 35g. Which sphere floats the highest.

    asked by mike on June 25, 2010
  46. chem

    If ice were to be placed in a container at a temperature of -2 oC, with a water vapor pressure of 2 torr, you would see a decrease in the volume of solid ice over time.

    asked by dan on September 7, 2010
  47. Chemistry

    what is the molarity of a solution prepared by dissolving 222 g of sodium carbonate in enough water to make a solution volume of 3250 mL's?

    asked by Heather on July 10, 2010
  48. Chemistry

    An aqueous solution of volume 7 dm3 is obtained by dissolving 5.5 kg of C12H22O11 in enough water. express the concentration in mol/L and mol/Kg

    asked by Susan on May 10, 2012
  49. pharmacy calculations

    If 500gm of dextrose are dissolved in 600ml of water, with the final volume being 1000ml, what is the percentage strength of the dextrose in the solution?

    asked by Vicki on February 2, 2012
  50. Science

    A drop of oil of volume 10^10m spread out on water to make a circular film of radius 10^1m. What is the thickness of the film

    asked by Ali on October 26, 2017
  51. chemistry

    A solution is made by dissolving 0.10 mole of Na2SO4 in water to a final volume of 1.00 L. What is the molar concentration of Na+ ions in the solution?

    asked by Dolores Ramirez on April 5, 2013
  52. Chemistry

    An aqueous solution of volume 7 dm3 is obtained by dissolving 5.5 kg of C12H22O11 in enough water. express the concentration in mol/L and mol/Kg

    asked by Susan on May 13, 2012
  53. chemistry

    200 ml of oxygen is collected over water at 18 degree Celsius and standard pressure, what will the volume of the dry oxygen be at STP?

    asked by jessica on June 15, 2013
  54. science

    A steel block has a volume of 0.08m3 and a density of 7,840kg/m3 what is the force of gravity acting on the block(the weight in water?

    asked by Anonymous on January 31, 2014
  55. CHEMISTRY!!

    A student determined the calorimeter constant of the calorimeter. The student added 50.00 mL of cold water to 50.00 mK of heated , distilled water in a styrofoam cup. The initial temp of the cold water was 21,00C and the hot water, 29.15C. The maximum temp

    asked by Sydney on March 3, 2010
  56. Gr 11 Chemistry-Dilutions

    The cafeteria decides to save money by using concentrated acetic acid (CH3COOH at 17.5 mol/L) and diluting it with water toproduce vinegar (5.00% m/v aceticacid). a) What is the concentration of vinegar in mol/L?b) What volume of vinegar can the cafeteria

    asked by Anonymous on December 17, 2017
  57. Chemistry

    The cafeteria decides to save money by using concentrated acetic acid (CH3COOH at 17.5 mol/L) and diluting it with water toproduce vinegar (5.00% m/v aceticacid). a) What is the concentration of vinegar in mol/L?b) What volume of vinegar can the cafeteria

    asked by Anonymous on December 17, 2017
  58. Calculus AB

    What is the maximum volume in cubic inches of an open box to be made from a 16-inch by 30-inch piece of cardboard by cutting out squares of equal sides from the four corners and bending up the sides? Your work must include a statement of the function and

    asked by Vikram on January 11, 2016
  59. Chemistry

    A solution is prepared by adding 47.3 mL of concentrated hydrochloric acid and 16.3 mL of concentrated nitric acid to 300 mL of water. More water is added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution. [Hint:

    asked by Andrew on May 22, 2012
  60. Chemistry

    A solution is prepared by adding 50.3 mL of concentrated hydrochloric acid and 16.6 mL of concentrated nitric acid to 300 mL of water. More water is added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution. [Hint:

    asked by Andre on February 29, 2012
  61. Science

    A family is planning to build a raised planting area using a blend of peat moss, mulch , and a rich organic soil in which to grow the plants. They have been told first to place on the ground a layer of material that will allow for a proper drainage each

    asked by Mydogbear on May 13, 2017
  62. Chemistry

    A 7.65 g sample of potassium chlorate,KClO3, was heated to decompose all the oxygen. It was found that 2.25 L of oxygen was collected over water at 25.00degreesC and 1.00 atm of pressure. The vapor pressure of water at that temperature is 23.8 mm Hg. How

    asked by Smushy on December 16, 2014
  63. physics

    I had asked a question.why when solid body with greater density than water is when dropped from floating boat water level rises? the answer has been given that as the solid body is more dense than water displaces less fluid as compared to when it was a

    asked by zoha on October 2, 2014
  64. Chemistry

    You put a rock weighing 45g into a graduated cylinder. Before you put the rock in the graduated cylinder, the volume of water in the cylinder is 10mL. After you put the rock in the graduated cylinder, the volume rises to 25mL. What is the density of this

    asked by Lysa on February 21, 2017
  65. thermodynamics

    equal to 1/4 th of the heat rejected to the sink. the efficiency of the engine is

    asked by Anonymous on February 2, 2013
  66. math

    A 6 CYLINDERHAS CYLINDERS WITH A RADIUS OF 2.22" AND A HT. OF 3.25", WHAT IS ENGINE SIZE OF THIS CAR?

    asked by DOROTHY on January 26, 2015
  67. math 104

    A rocket engine, 2.44 cross product 10−5 watts/cm2

    asked by Anonymous on December 7, 2014
  68. physics

    how long does it take a 19kW steam engine to do 6.8x10^7 J of work?

    asked by yo on March 1, 2010
  69. Physics

    What is the power output of an engine the does 60,000J of work in 10s?

    asked by Alina on December 20, 2010
  70. science

    What is the maximum amount of work that can be done in 15 seconds by an engine working at 30 kw?

    asked by Tionge on February 9, 2016
  71. physics

    how much work is done by an engine using 105 watts of power in 3.2 seconds?

    asked by Jason on April 12, 2011
  72. physics

    How long does it take a 25 kW steam engine to do 5.6 × 10^7J of work? Answer in units of s

    asked by stacy on January 6, 2012
  73. Science

    gasline burns in a car engine is a phyical change?

    asked by Halei on October 23, 2008
  74. Chemistry

    A sample of oxygen gas is collected by displacing water from an inverted bottle as shown in the diagram below. The volume of O2(g) collected is 400.0ml at 25 degree Celsius. The atmospheric pressure is 680 torr and the vapor pressure of water at 25 degree

    asked by K on February 3, 2011
  75. Math

    A pyramid is inscribed in a cube whose volume is 52pi cm^3. The volume of a sphere is equal tpo the volume of this pyramid. Find the volume of a second cube whose edge is equal to the radius of the sphere.

    asked by Eli on May 30, 2011
  76. Algebra!!

    1.a swimming pool has a radius of 10 feet and a height of 4 feet. What is the volume? 2.What is the volume of a soup can with a radius of 4cm and a height of 16cm? 3.What is the volume of a triangular prism with a length of 10cm a width of 15cm and a

    asked by Renee on March 31, 2012
  77. Geometry

    Given a soda can with a volume of 21 and a diameter of 6, what is the volume of a cone that fits perfectly inside the soda can? (Hint: only enter numerals in the answer blank). 7 because volume of a cylinder is pi r^2 h, and a cone is 1/3 pi r^2 h, which

    asked by Jessie on February 23, 2016
  78. Chemistry

    What volume (mL) of 0.20 M HCl needs to be added to 1.23 L of 0.10 M acetic acid to reduce the percent ionization to 1.00%? Assume the volume of HCl added is negligible compared to the volume of the whole solution, and that the small x approximation is

    asked by Molly on March 3, 2015
  79. Engineering

    Determine the minimimum depth of a water reservoir that will provide a flow rate of 1200 gpm in a 4 inch diameter horizontal pipe that opens to the atmosphere You ought to consider Bernoulli's equation for this, it is in your text. You can model it as

    asked by matt on September 10, 2006
  80. calculus

    A cylinder is generated by rotating a rectangle with perimeter 12 in. about one of its sides.? Express the volume of the cylinder as a function of x. Find the approximate value of x that maximizes the volume. Then give the approximate maximum volume.

    asked by riri on October 20, 2012
  81. Probability

    Suppose that we have three engines, which we turn on at time 0. Each engine will eventually fail, and we model each engine's lifetime as exponentially distributed with parameter λ. The lifetimes of different engines are independent. One of the engines

    asked by Anonymous on December 3, 2018
  82. PreCal

    A square sheet of cardboard 18 inches is made into an open box (there is no top), by cutting squares of equal size out of each corner and folding up the sides. Find the dimensions of the box with the maximun volume. Volume= base(width)height but base + 2H

    asked by Chau on November 6, 2006
  83. Physics

    1. Which of these physical situations describes an inversely proportional relationship? (Points : 1) The volume always decreases as the pressure increases. The volume always increases as the pressure increases. The pressure vs. volume graph is a straight

    asked by Deborah on October 17, 2012
  84. Algebra

    The volume in cubic feet of a Cd holder can be expressed as V(x)=-x^3-x^2+6x, the depth is 2-x , factor the polynomial to find linear expression for the height and the width. - Do I just factor the -x^3-x^2+6x? It because I know the volume is LWH, so don't

    asked by Shadow on February 8, 2012
  85. Chemistry

    A driving bell is a container open at the bottom. As the bell descends, the water level inside changes so that the pressure inside equals the pressure outside. Intially the volume of air is 8.58m^3 at 1.020 atm and 20 degrees C. What is the volume at 1.584

    asked by Lauren on October 23, 2007
  86. Math CALCULUS HELP PLEASE

    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 amount remaining in the lungs even after the deepest exhalation (i.e. the minimum amount of air

    asked by Brad on January 20, 2016
  87. Chemistry

    Please help! I don’t know where to start and I need step by step on how to solve: A gaseous mixture inside a rigid steel vessel contains 75% CO2(g) and 25% H2O (g) by volume at 175 degrees Celcius and 225 kPa. The mixture is then cooled to 0 degrees

    asked by Jacqueline on April 27, 2018
  88. chemistry

    An empty beaker weighs 39.17 g. a) When completely filled with water, the beaker and its contents have a total mass of 406.25 g. What volume does the beaker hold? Use d =1.00 g/mL as the density of water. for A i got 367.08 but I don't know for this b) How

    asked by Jennifer on March 7, 2017
  89. Geometry-Help PLZ

    Each of 6 cubes has a volume of 64 cubic units. If the figure is reduced in size such that the volume of each new cube is 1/8 the volume of the original, what is the surface area of the 6 cubes after the decrease? I came up with 96 sq units Is this

    asked by Mary on May 25, 2011
  90. Math

    Please help me with some good websites for the followung question. what industry is affected by the economy,such as the airline, automobile, home building, technological or gasoline?

    asked by Kim on April 5, 2008
  91. physics

    Determine the stopping distances for an automobile going a constant initial speed of 97km/h and human reaction time of 0.50s , for an acceleration a=−6.5m/s2

    asked by Shan on August 30, 2013
  92. math

    An automobile rental angency charges $170 for 5 days for a certain model car. What is the unit price in dollars per day? why is it 59/3gal

    asked by angel on September 17, 2014
  93. Economics

    How will a new law mandating an increase in required levels of automobile insurance affect the equilibrium price and quantity in the market for new automobiles?

    asked by Nickey on October 18, 2007
  94. physics

    An automobile manufacturer claims that its product will travel 1.2 km in 27 s, starting from rest. What is the magnitude of the constant ac- celeration required to do this? Answer in units of m/s2.

    asked by Anonymous on November 18, 2010
  95. Math

    An automobile of mass 2000 kg moving at 30 m/s suddenly stopped with a constant braking force of 10000 N. How far does the car travel before stopping?

    asked by Desiree on October 19, 2017
  96. physics

    What net force would actually be necessary to stop an automobile of mass 880 traveling initially at a speed of 52.0 in a distance equal to the diameter of a dime, which is 1.8 ?

    asked by hydro on March 17, 2010
  97. Physics

    A high diver of mass 68.2 kg jumps off a board 10.4 m above the water. The acceleration of gravity is 9.8 m/s2 . If his downward motion is stopped 3.58 s after he enters the water, what average upward force did the water exert on him? I already calculated

    asked by Khan on December 5, 2012
  98. chemistry

    What volume of distilled water should be added to 500ml of a solution of sulphuric acid to 90% by weight, density 1.81 g.mL-1, to obtain a 10 Molar solution?

    asked by Shania on September 4, 2017
  99. math

    A water tank is 12m high.it has a a rectangular base, and the length is 7m more than the width. if the volume is 1728m3, find the dimensions of the tank

    asked by kledi on February 6, 2014
  100. Physcis

    a black of mass 92 kg and volume 0.031 lies at the bottom of the sea how much force is needed to lift it ? take 1.03*10^3 kg/m as the density of sea water

    asked by eman on September 7, 2013