1. science

    if an object covers a large enough area of the water's surface, it can float on the water because of the________of water particles

    asked by shon on October 15, 2012
  2. physics

    Calculate the freezing point of water at a depth of 10.0 cm below the surface of the water. The density of the water is 0.9998 g/cm3.

    asked by Joseph on October 30, 2016
  3. chemistry

    Calculate the freezing point of water at a depth of 10.0 cm below the surface of the water. The density of the water is 0.9998 g/cm3.

    asked by Joseph on October 30, 2016
  4. Chemistry

    75.0 claories of heat were added to 50.0 ml of water, the initial temperature of the water being 25.0 celcius. What is the final temp. of water?

    asked by Anonymous on October 10, 2011
  5. Chemistry Help Please

    Titration of a Sample of Household bleaches: The oxidizing agent in a household bleach is determined by placing 100 mL of distilled water in a 250 mL Erlenmeyer flask and adding 10 mL of the 10% (w/w) KI solution, swirling the contents of the flask to mix

    asked by Sara on October 22, 2008
  6. Chemistry

    Objectives To determine the molecular weight of a volatile liquid. Discussion [This laboratory exercise was adapted from one in Beran and Brady's Laboratory Manual for General Chemistry , John Wiley & Sons, 1982] The Dumas Method for determining the

    asked by Veronica on November 27, 2012
  7. Math

    The volume of a gas is inversely proportional to the pressure. If a pressure of 30 pounds per square inch corresponds to a volume of 48 cubic feet, what pressure is needed to produce a volume of 60 cubic feet?

    asked by Keonn'a on November 27, 2018
  8. pre calc

    the volume of a gas varies inversely as its pressure and directly as its temperature. A certian gas occupies a volume of 2.3L at a temp of 380 K and a pressure of 20 N/cm^2 find the volume when the temp is 342 K and the pressure is 10 N/cm^2

    asked by wally on November 25, 2014
  9. Science

    how the volume of air in a tank of compressed air would change if the volume of the tank doubled? My answer was: The volume of the air would increase and it would be more difficult to fit inside of the tank depending on if the tank was filled or not.

    asked by Steven on November 17, 2015
  10. Math

    The dimensions of a rectangular wading pool are shown in the diagram above. Which one of the expressions below represents the maximum volume (in cubic units) of water it can hold? 2 feet high. 3.5 feet across bottom and 5 feet long. Which answer is best 1.

    asked by Mydogbear on May 4, 2017
  11. physics

    An ideal gas with r(Gama) = 1.5 occupies a volume of 2.0 L. The gas expands isothermally to a volume of 3.0 L. Alternatively, the gas reaches the same final state by first adiabatically expanding to the final volume then heating isochorically to the final

    asked by sand on May 17, 2012
  12. physics

    An ideal gas with r(Gama) = 1.5 occupies a volume of 2.0 L. The gas expands isothermally to a volume of 3.0 L. Alternatively, the gas reaches the same final state by first adiabatically expanding to the final volume then heating isochorically to the final

    asked by sand on May 16, 2012
  13. physics

    An ideal gas with r(Gama) = 1.5 occupies a volume of 2.0 L. The gas expands isothermally to a volume of 3.0 L. Alternatively, the gas reaches the same final state by first adiabatically expanding to the final volume then heating isochorically to the final

    asked by sand on May 18, 2012
  14. MATH

    The table below represents the volume of a liquid sample as a function of its temperature: Temp (C) Volume (ml) x f(x) 11 95 16 100 21 105 26 110 The average rate of change of f(x) between x=11 to x=21 is _____ ml per C ((degrees)) and represents the rate

    asked by HELP PLEASE on November 16, 2014
  15. biology

    Which of the following statements is true? 1.Both unicellular and multicellular organisms are at risk of having too much water entering their cells if they are exposed to water containing no salts. 2.Only multicellular organisms have structures that enable

    asked by Cassie on October 10, 2013
  16. physics101

    Nd/Na = -V.g.hd(beta-beta1)/KT NdNa: No of particules(mole) V: Volume g: gravitational acceleration hd: distance beta: densities(mass/volume) k: Boltzman constant (joules/kelvin) T: absolute temperature(kelvin) volume = L3 gravitational acceleration L/T2

    asked by lamp on November 18, 2014
  17. physics

    Nd/Na = -V.g.hd(beta-beta1)/KT NdNa: No of particules(mole) V: Volume g: gravitational acceleration hd: distance beta: densities(mass/volume) k: Boltzman constant (joules/kelvin) T: absolute temperature(kelvin) volume = L3 gravitational acceleration L/T2

    asked by lamp on November 18, 2014
  18. chem

    Water (2330 g) is heated until it just begins to boil. If the water absorbs 5.53×105 J of heat in the process, what was the initial temperature of the water?

    asked by Anonymous on October 20, 2010
  19. Chemistry

    Identify the compound with the highest entropy. a. solid ice b. room temperature water c. gaseous water d. frozen water

    asked by Adryan on December 6, 2011
  20. science

    1.Describe how the hot water and the cold water moved when the divider was lifted. 2.Use your understanding of density to explain the motion of the water.

    asked by Misa on September 21, 2010
  21. Chem please help

    Which of the following would have the greatest entropy? A. Water placed in the refrigerator B. Water sitting out on the kitchen counter C. Water vapor D. An ice cube I think c what about you drbob222

    asked by Morgan on November 23, 2014
  22. CHEMISTRY

    IF 100.0G OF WATER AT 90'C IS ADDED TO 50.0G OF WATER AT 10'C, ESTIMATE THE FIBNAL TEMPATURE OF WATER. EXPLAIN YOUR REASONING. PLEASE HELP I DON'T GET IT AND I HAVE ANOTHER PROBLEM SIMILAR TO THIS

    asked by PERRIE on May 2, 2013
  23. Chemistry

    If there are 25 mg of water in a typical drop of water, how many drops of water would react completely with 2 mmol of phenylmagnesium bromide? How do I set up the problem?

    asked by Damon on November 9, 2014
  24. Chemistry

    Can someone check my answers? Thanks. 1.) If you were involved in an acid rain monitoring project with several other samplers, why would it be important that all of you collect your samples on the same day and do the alkalinity tests within 24 hours? Acid

    asked by Joe on March 21, 2007
  25. Chemistry

    I had to perform an experiment for rate of reaction. The point of the experiment was to show how changes in reactant concentration, temperature, and catalyst presence can affect the rate of a reaction. The reaction that we studied was H2O2 + 2I^- + 2H^+ ->

    asked by Hannah on February 25, 2012
  26. chemisrty

    as a system increases in volume it absorbs 52.5 j of energy in the form of heat form the surroundings. the piston is working against a pressure of 5.00 atm. The final volume of the system is 58,0 L. What is the initial volume of the system if the internal

    asked by Jay on November 16, 2010
  27. Chemistry-DrBob222

    What is the final temperature and physical state if water when 47.50 kJ of energy is added to 15.0 g of ice at -10.0 C? Helpful information: Cs (ice) = 2.1 J/g C Heat of fusion (water) = 6.02 kJ/mol Cs (water) = 4.184 J/g C Heat of vaporization (water) =

    asked by Nevaeh on March 12, 2016
  28. math

    the dimensions of trianguloar prism A andtriangular prism B are proportional. The volume of the Triangular Prism is 6,400 cubic feet. If the volume of Triangular prism B is 75% of the volume of Triangular Prism B. What is the volume of Trianguloar Prism B?

    asked by James Shotwell on January 4, 2013
  29. Physics

    A cylinder contains the helium gas with a volume of 0.1 m3 at a pressure of 220 kPa. The gas is compressed to a volume of 0.02 m3. The process is adiabatic and the specific heat ratio of the gas is 1.66. Determine (a) the pressure in the cylinder after

    asked by Dia on December 18, 2011
  30. Chemistry HELP!!

    Can you identify a metal if you know its density? Explain Do you think that determining the volumes of metal samples by measuring their dimensions and calculating would be more r less accurate than determining volumes by water displacement? Explain. Would

    asked by Dave on August 29, 2006
  31. science

    Concentrated sulfuric acid (18.4 molar H2SO4) has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar, the solution has a density of 1.38 grams per milliliter and can be used as an electrolyte in lead storage batteries for

    asked by raksha on October 24, 2007
  32. Physics

    A 343-kg boat is sailing 16.2° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 3.76 m/s. During this time, three forces act on the boat: a 30.3-N force directed 16.2° north of east (due to an

    asked by Natasha on February 9, 2012
  33. Chemistry

    Assume you begin with 60 g of water at 20 oC and 60 g of water at 80 oC. After adding the two portions of water into your calorimeter, you determine the temperature of the mixed portions of water to be 45 oC. What is the heat capacity of the calorimeter?

    asked by Alex on March 12, 2012
  34. Physic II

    A person tries to heat up her bath water by adding 5.0 L of water at 80 degrees celcious to 60 L of water at 30 degrees celcious. What is the final temperature of the water? Show work please !

    asked by hulune2 on April 7, 2014
  35. chemistry

    How many grams of water can be cooled from 35^\circ {\rm C} to 16^\circ {\rm C} by the evaporation of 57{\rm g} of water? (The heat of vaporization of water in this temperature range is 2.4 {\rm kJ}/{\rm g}. The specific heat of water is 4.18 {\rm J}/{\rm

    asked by Anonymous on April 4, 2013
  36. Math

    The charges on a monthly water bill came to $0.86 per cubic meter of water used, plus a service charge of $4.49. Last month Jeremy's water bill came to $69.85, how many cubic meters of water had he used?

    asked by Erica on January 25, 2013
  37. physics

    A rock is dropped from a bridge to the water below. It takes 2.4s to hit the water. Find the final speed of the rock when it hits the water. How high is the bridge above the water

    asked by tasha-please help#2 on January 17, 2012
  38. English

    I forgot to include these other sentences. Are the alternatives possible? Thank you very much. 1) Machinery was mainly driven (powered?) by water. 2) The new inventions in cloth-making took place because the was a rise in population and consequently an

    asked by Franco on October 12, 2010
  39. chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.8 of water upon warming from 25degree C to 50degree C . Assume that the water is initially saturated with nitrogen and

    asked by bf on January 24, 2010
  40. Maths

    Find the number of decibels of sound produced by a jet engine at a distance of 50 metres if the intensity is 10 watts per square metre.

    asked by Donna on February 15, 2014
  41. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine,2.44 cross 10^(−5)watts/cm2.

    asked by Tierra on May 12, 2013
  42. Managerial Economics

    Please explain the reasons why Harley Davidson cycle company would want copyrights on the word hog and for exclusive rights to its engine sound

    asked by Anonymous on August 27, 2009
  43. physics

    When a 1150 kg space rocket lifts off of ground. How many joules of energy has been provided by its engine during the time in which it achieves a speed of 180 m/s.

    asked by Zach on February 7, 2012
  44. math

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.37 cross 10−5 watts/cm2

    asked by neal on June 5, 2014
  45. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.67 cross 10−5watts/cm2

    asked by Anonymous on August 26, 2013
  46. ms.sue and SraJMcGin

    it isnt showing what you said. i put in the search engine education programs in wiscon sin for high school drop outs

    asked by scooby91320002 on May 31, 2009
  47. physics

    Spaceman Spiff's space box wights 60N. its engine exerts a +312N of force at lift-off. what is the acceleration when it lifts off

    asked by felipe on January 10, 2013
  48. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.42 cross 10−5 watts/cm2

    asked by Mary Ann on May 29, 2014
  49. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.42 cross 10−5 watts/cm2

    asked by Mary Ann on May 29, 2014
  50. Physics

    A car travelling at 30m/s overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine.[1hp=0.75]

    asked by Justin on September 2, 2018
  51. physics

    Assuming maximal power output, how long, in seconds, would it take a 1,535 kg car with a 128 hp engine to accelerate from 50 km/h to 102 km/h? (1 hp = 746 W)

    asked by Lydia on November 8, 2011
  52. algebra

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.54 cross 10−5 watts/cm2

    asked by samuel louijeune on February 8, 2014
  53. math

    Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.42 cross 10−5 watts/cm2

    asked by tasha on May 23, 2014
  54. physics

    An engine provides a 10kw of power to lift a heavy load at a constant velocity a distance 20m in 5s. what is the mass of the object being lifted?

    asked by Anonymous on April 7, 2011
  55. Chem

    I need help I don't get this 1. Since the gas in your graduated cylinder is a mixture of butane and water vapor, you must determine the partial pressure of the butane, Pbutane, alone. To do this, consult a reference and record the partial pressure of the

    asked by |-/ on March 6, 2017
  56. Algebra

    Chart with a month bill for water which is $35.00. Question is Lynne has a watering can that holds 16 cups of water, and she fills it half full. Then she waters her 15 plants so that each plant gets the same amount of water. How many cups of water will

    asked by Stephie on September 9, 2014
  57. Chemistry

    A student produced a volatile liquid experiment with the following results: Mass of flask, boiling water, foil cap, and unkown after cooling, g: 83.350 Mass of flask, boiling stone, and foil cap, g: 82.657 Water bath temperature: 95*C Barometric pressure:

    asked by Chelsea on October 27, 2011
  58. federal tax

    Carl bought a heavy-duty truck (5-year class recovery property) for his business service on April 30. The truck is not considered a passenger automobile for purposes of the listed property and luxury automobile limitations. The truck has a depreciable

    asked by bree on March 1, 2010
  59. Mat 116/algebra

    A cylinder has a radius of 5 in. If the volume of the cylinder is 250 ¦Ðr¡¼in¡½^3, what is the height of the cylinder? Volume cylinder is AreaBase*height where area of the base is PI*r^2 Volume=PI*r^2 * h solve for h.

    asked by Dee on May 13, 2007
  60. Physics

    The average coefficient of volume expansion for carbon tetrachloride is 5.81 10-4 (°C)-1. If a 43.0 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the temperature rises to

    asked by Jamie on April 27, 2011
  61. Maths

    A container in the shape of a right circular cone with vertex angle a right angle is partially filled with water. a) Suppose water is added at the rate of 3 cu.cm./sec. How fast is the water level rising when the height h = 2cm.? b) Suppose instead no

    asked by leone on August 9, 2012
  62. College Algebra

    A merchant blends tea that sells for $5.45 a pound with tea that sells for $2.45 a pound to produce 80 lb of a mixture that sells for $3.95 a pound. How many pounds of each type of tea does the merchant use in the blend? lb (at $5.45/lb) lb (at $2.45/lb)

    asked by Jrich on August 26, 2011
  63. Algebra

    A merchant blends tea that sells for $5.00 a pound with tea that sells for $3.00 a pound to produce 80 lb of a mixture that sells for $3.75 a pound. How many pounds of each type of tea does the merchant use in the blend?

    asked by Faisal on February 21, 2016
  64. CHEM

    A 3.5g sample of potassium chloride(KCl)is dissolved in 10mL of water.The resulting solution is the added to 60mL of a 0.5M CaCl2 soltion. Assuming that the volume are additive,calculate the molar concentration and %w/v of each ion present in final

    asked by RUBY on October 13, 2017
  65. Chemistry(Answer check)

    A 0.1052 g sample of copper metal is dissolved in 55 mL of concentrated HNO3 to form Cu2+ ions and then water is added to make a total volume of 208.5 mL. (Calculate the molarity of Cu2+.) 0.1052g*63.546/6.022e23 did I set it up right?

    asked by Ashley on June 21, 2013
  66. chemistry

    If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by sam on October 27, 2016
  67. chemistry

    A graduated cylinder contains 17.0 mL of water. What is the new water level after 31.6 g of silver metal with a density of 10.5 g/mL is submerged in the water

    asked by timmy on October 7, 2015
  68. science

    Infiltration is the process by which rainwater becomes; A. Saltwater B. River water C. Ground water D. Ocean water

    asked by someone on November 25, 2013
  69. chemistry-thermochemistry

    A student mixes 85.7 g of water at 68.0°C with 50.7 g of water at 24.5°C in an insulated flask. What is the final temperature of the combined water

    asked by james on October 5, 2008
  70. Chemistry

    A student mixes 85.1 g of water at 69.6°C with 58.1 g of water at 22.0°C in an insulated flask. What is the final temperature of the combined water?

    asked by John on February 9, 2013
  71. chemistry

    If you combine 360.0 mL of water at 25.00 °C and 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by anon on October 28, 2016
  72. Chemistry

    If you have 320.0 mL of water at 25.00 °C and add 110.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Ryan on October 18, 2011
  73. science

    Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?

    asked by Sandra on January 26, 2011
  74. Abby

    If you have 320.0 mL of water at 25.00 °C and add 140.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Chemistry on December 5, 2013
  75. math

    an aquarium holds 6 1/4 gallons of water. the water level has dropped to 4/5 of this amount. how much water should be filled?

    asked by veronica on October 20, 2010
  76. Chemistry

    the specific heat of water is 4.184 j/g °c. How many grams of water at 85 C would have to be added to raise 1.00 kg of water from 25.0 C to 50.0 C? Please help I am not sure of where to start!

    asked by Anonymous on November 10, 2012
  77. Chemistry

    If you have 290.0 mL of water at 25.00 °C and add 120.0 mL of water at 95.00 °C, what is the final temperature of the mixture? Use 1.00 g/mL as the density of water.

    asked by Harley on November 11, 2011
  78. math

    how much is 8 liters jug water he fills 9750 millimeters pitchers with water how much water is left?

    asked by rose on April 23, 2014
  79. physical chemisry

    Estimate the freezing point of 150 cm3 of water sweetened with 7.5g of sucrose (C12H11O22). (Kf for water is 1.86 K kg mol-1; density of water is 1gcm-3)

    asked by Anonymous on April 6, 2010
  80. Chm

    8.08g of KNO3 were required to saturate 25g of distilled water at 20oC. Calculate the solubility of the solute in a) g/dm^3 of water b) mol/dm^3 of water

    asked by Ife on June 10, 2011
  81. Chemistry

    What makes the strongest cation in water? Al Na Fe K Mg I know that the OH^- ions from water are enough for the Al(OH)3 and Fe(OH)3 precipitates to appear and we've been taught that K,Na compounds are soluble in water too. And Mg(OH)2 needs a higher OH^-

    asked by Josh on July 26, 2017
  82. Physics

    A puddle holds 150 g of water. If 0.50 g of water evaporates from the surface, what is the approximate temperature change of the remaining water? (Lv = 540 cal/g)

    asked by JJ on December 19, 2010
  83. PhysicsI

    A puddle holds 150 g of water. If 0.50 g of water evaporates from the surface, what is the approximate temperature change of the remaining water? (Lv = 540 cal/g)

    asked by Fred on July 24, 2014
  84. Physics Science

    Mary mixes 5.00 lb of water at 200°F with 7.00 lb of water at 65.0°F. Find the final temperature of the mixture. -Specific Heat of water is 1.00 BTU/lbs°F

    asked by Ben on November 5, 2014
  85. science help

    How would planting trees most affect the water cycle? decrease in evaporation increase in transpiration movement of water to new locations water pollution is it b

    asked by Oscar on November 9, 2015
  86. chemistry

    when a 0.4-g almond sample is burned the heat gained by the water is 7525.4 J and the temperature of the water increased from 24 C to 58 C what was the mass of the water in grams? a. 50 b. 100 c. 45 d. 52.9

    asked by shannon on May 10, 2010
  87. Biology Lab Banana DNA

    We did a DNA extraction lab of a banana. I was wondering, what exactly is the purpose of using mushed bananas, and how was water used as well (we used the water after using soap and salt, but I can't understand what the water did)? Thanks.

    asked by LC on April 1, 2008
  88. CHEMISTRY

    Suppose 1400 J of heat energy are put into a sample of liquid water at 23°C, and the final temperature of the water is 78°C. How many grams of water are present?

    asked by Sarah on April 16, 2012
  89. Physics - Method Of Mixtures

    Mary mixes 5.00 lb of water at 200°F with 7.00 lb of water at 65.0°F. Find the final temperature of the mixture. -Specific Heat of water is 1.00 BTU/lbs°F

    asked by Ben on November 5, 2014
  90. Math

    Explain what happens to the volume of a prism when its dimensions are tripled. Answer: Is the volume going to be 9 times larger

    asked by Helen on February 24, 2016
  91. chemistry( urgent)

    what do we assume about volume of the actual molecules themselves in a sample of gas, compared to the bulk volume overall?why?

    asked by alex on March 10, 2011
  92. chemistry

    A 1.00 L volume of 0.609 M HNO3 is condensed to a volume of 0.750 L, calculate the molarity (M) of H+ in the new solution

    asked by eng on March 28, 2010
  93. Geometry

    how do you find the volume and surface area of a square pyramid and sphere when you are given only a volume of 1200?

    asked by Nicky on May 15, 2008
  94. chemistry

    A sample of a gas in a ridge container at 30.0 c has a volume of 2.00L. If its temp increased to 40.0 C What will the new volume be?

    asked by levi on February 22, 2012
  95. chemistry

    a sample of air has a volume of 140.0 mL at 67 degrees C. At what temperature will its volume be 50.0 mL at constant pressure?

    asked by Jamal on May 18, 2010
  96. Pre Chem

    A gas occupies a volume of exactly 500 mL at STP. What volume would it occupy at exactly 70°C and 400 mm of pressure?

    asked by Anonymous on April 21, 2014
  97. Physics (one more)

    A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? Someone on here has already answered this but it was wrong!

    asked by Kaitlyn on June 22, 2012
  98. math

    if the height is 3cm and the base of the area is 4cm 2 what is the volume? and is the lil 3 the sign for volume?

    asked by Anonymous on March 20, 2012
  99. Chemistry

    A sample of gas has a volume of 6.20 L at 23 degrees celsius at a pressure of 1.90 atm. What is its volume at STP?

    asked by ASAP!! on April 9, 2014
  100. Chem

    A sample of gas has a volume of 8.00 L at 20.0 degrees celcius and 700. torr. What will be it's volume at STP?

    asked by Jeni on November 10, 2010