1. science

    Which of these statements about saltwater is correct? Saltwater freezes at a lower temperature Saltwater freezes at a higher temperature

    asked by Anonymous on May 1, 2014
  2. Science

    Which of these statements about saltwater is correct? a. Saltwater freezes at a lowers temperature? b. Saltwater freezes at a higher temperature c. saltwater does not freeze at any temperature d. saltwater freezing point depends on the temperate of ocean

    asked by Hannah on February 24, 2014
  3. Science PLEASE PLEASE HELP

    Which of these statements about saltwater is correct? Saltwater freezes at a lower temperature Saltwater freezes at a higher temperature Saltwater does not freeze at any temperature Saltwaters freezing point depends on the temperature of the ocean

    asked by Sally on November 8, 2016
  4. science

    saltwater freezes at what temperature

    asked by jamie on February 11, 2019
  5. Science

    Water freezes at 0 Celisus. If a temperature drop is causing a glass of water to freeze, how would a thermometer in the water most likely change as the water freezes? A. The temperature would keep rising steadily. B. The temperature would keep falling

    asked by Anne on October 20, 2013
  6. Science

    Water on Earth is either freshwater or saltwater. What is the percent ratio of freshwater to percent saltwater on Earth? A) 1% freshwater : 99% saltwater B) 3% freshwater : 97% saltwater C) 30% freshwater : 70% saltwater D) 50% freshwater : 50% saltwater I

    asked by Sasha on March 30, 2017
  7. Physics

    A brick is completely submerged in SALTWATER (D = 1.03 kg/L). The brick experiences a buoyant force of 193 oz. What is the weight of the SALTWATER displaced by the brick?

    asked by Cameron on October 27, 2018
  8. physics II

    A certain material is in a room at 27°C. If the absolute temperature (K) of the material is tripled, its resistance doubles. (Water freezes at 273 K.) What is the value for alpha (a) the temperature coefficient of resistivity?

    asked by Alinkashia on July 28, 2010
  9. chemistry

    calculate the molecular weight of a substance which freezes forms a 7.00% by mass solution in water which freezes at -0.89°C.

    asked by iain on March 7, 2010
  10. science

    why organic compound freezes from bottom while water freezes from top???

    asked by manoj on July 31, 2010
  11. Science

    Question: The greatest expansion of water occurs when: isn't it when it turns to ice?? The other answers are at 4C it gains temperature or at 4C it loses temperature. In the winter the pipes can break because the water in them freezes that's why I thought

    asked by MIKE on October 24, 2012
  12. Math

    The question is: The freezing point of helium is -272 degrees celsius. The original temperature of a sample of helium is 3 degrees celsius. a.How much must the temperature change to ensure that helium freezes? -AND- b.Assume the temperature changed at a

    asked by Ali on September 22, 2008
  13. SCIENCE!

    the second worksheet of SCIENCE! for today performing an experiment read the following statements and then answer the questions. 1. a scientist wants to find out why sea water freezes at a lower temperature than fresh water. 2. the scientist goes to the

    asked by anon on August 29, 2015
  14. Chemistry

    An aqueous solution of NaCl freezes at -1.6ºC. At what temperature will it boil? Given that K(b) for water is 0.52 deg m^-1.

    asked by steph on April 17, 2013
  15. physcial science

    As water freezes, its temperature does what? a) increase b) decrease c) first increase, then decrease d) does not change The temperature of freezing water is 0o C. The temperature of the water will remain at zero C until all of the water has frozen;

    asked by dora on June 22, 2007
  16. 7th grade science hypothesis question

    please help me with this challenge question, as i don't quite understand it.: Yolanda makes this hypothesis: "If salt is added to water, then the water will boil at a lower temperature." She sets up and experiment to test her hypothesis, but discovers that

    asked by Beth on September 8, 2008
  17. science

    please help me with this challenge question, as i don't quite understand it.: Yolanda makes this hypothesis: "If salt is added to water, then the water will boil at a lower temperature." She sets up and experiment to test her hypothesis, but discovers that

    asked by Beth on September 8, 2008
  18. Science

    The Air temperature is -2 degrees Celsius (28 degrees Fahrenheit) . Which statement correctly describes what happens to snow at this temperature? A. Snow Starts to melt. B. Snow remains frozen C. Snow changes to steam D. Snow melts and then freezes again

    asked by Anonymouse on March 16, 2018
  19. Chemistry

    Confused on these, please explain or show work for the answer if you can. :) 1. What is the morality of a water solution that freezes at -0.633°C? 2. What is the freezing point of a solution that contains 1.99 g of a molecular solute of molar mass 58.5

    asked by Lauren on December 6, 2017
  20. Math evaluating expressions with rational numbers

    Liquid nitrogen freezes at -346 degrees F and boils -321 F. Janice gradually heats frozen nitrogen 1 1/2 degrees several times over an hour. 1)Define variables for the number of times Janice increases the temperature and the temperature of the liquid

    asked by Kyra on September 14, 2014
  21. Chemistry

    1. As the intermolecular forces between molecules increase in magnitude, do you expect each of the following to increase, decrease or remain the same? My answers: Viscosity: increase Boiling point: increase Vapor pressure: decrease Surface tension:

    asked by Student on February 13, 2016
  22. Chemistry

    1. As the intermolecular forces between molecules increase in magnitude, do you expect each of the following to increase, decrease or remain the same? My answers: Viscosity: increase Boiling point: increase Vapor pressure: decrease Surface tension:

    asked by Student on February 14, 2016
  23. Chemistry

    27. Amorphous solids have crystal structures.- F? 32. Pure, crystalline solids freeze and melt at the same temperature.- F 34. Water expands as it freezes.- T Thanks -MC

    asked by mysterychicken on October 26, 2010
  24. Physics

    A brick is completely submerged in SALTWATER (D = 1.03 kg/L). The brick experiences a buoyant force of 193 oz. What is the weight of the SALTWATER displaced by the brick? I believe the answer is 193 because, wt. of water displaced = buoyant force Let me

    asked by Cameron on October 28, 2018
  25. Physics

    A 0.260-kg piece of aluminum that has a temperature of -165 °C is added to 1.4 kg of water that has a temperature of 3.0 °C. At equilibrium the temperature is 0 °C. Ignoring the container and assuming that the heat exchanged with the surroundings is

    asked by Sara on November 17, 2006
  26. AP Chemistry

    1. The heat of solution of salta may either be endothermic or exothermic. What factors determine this? 2. As a solution freezes, why does the freezing temperature continue to decrease? 3. When the concentration of very dilute aqueous solutions are

    asked by anonymous on February 4, 2007
  27. chemistry

    C6H6 freezes at 5.5°C. At what temperature will a solution of 10 g of C4h10 in 200g of C6H6 freeze? The molal freezing point depression constant of C6H6 is 5.16°C/m?

    asked by iain on March 7, 2010
  28. Science

    1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. ***Mixtures have two or more substances

    asked by TTR+S<3 on January 29, 2014
  29. Chemistry

    Name the property that each change depends on. Then classify the property as either chemical or physical. a) You separate a mixture of gravel and road salt by adding water to it b) Carbon dioxide gas freezes at a temperature of -78C

    asked by Jill on September 8, 2014
  30. Science

    1. Which of the following is true about mixtures? (1 point) Mixtures consist of two or more substances chemically combined. Mixtures cannot be separated by physical means. Mixtures consist of only one kind of atom. Mixtures have two or more substances

    asked by Trover on January 25, 2016
  31. chemistry

    A sample of 10.00g of a solid unknown was dissolved in 25.00g of water. Assuming that pure water freezes at 0.0°C and the solution freezes at -5.58°C, what is the molal concentration of the solution? What is the molar mass of the solid? Show your

    asked by paula on January 24, 2015
  32. Chemistry

    You need to find the freezing point of a 1.50m aqueous NaCl solution. You calculate []Tf to be 1.86 degrees C/m x 3.00m or 5.86 degrees C. What is the temperature at which the solution freezes?

    asked by Kim on April 27, 2010
  33. math

    A new temperature scale has the freezing point of water at 50 degrees and the boiling point of water at 125 degrees. Normal body temperature is 37 degrees C and 98.6 degrees F. Water freezes at 0 degrees C and 32 degrees F and boils at 100 degrees C and

    asked by Joey on March 14, 2010
  34. Science.

    Frost wedging is a form of weathering caused by water seeping into the cracks of rocks. This type of weathering is common in regions that have very cold winters. How does frost wedging take place? A) This is a physical weathering process — when water

    asked by AyItsYoAnimeGurl on December 14, 2018
  35. chemistry

    why water expands when it freezes? Water expands when it freezes because it starts to bend. when all the water molecules are in this hexagonal structure, the same amount of water takes up more space than when the molecules are randomly arranged. For

    asked by Ciaria on March 11, 2015
  36. AP Chemistry

    Each increase in pressure of 100 atm decreases the melting point of water by 1.0 degrees C. Estimate the temperature at which liquid water freezes under a pressure of 400 atm. How do I approach this problem?

    asked by Thuy on October 27, 2010
  37. Physics

    Calculate how much pressure (due to the liquid) would be on a 83 kg person if they were 53 m deep in... a.)...freshwater. The density of freshwater is 1000 kg/m3. Express your answer in both pascals and atmospheres. 1 atm = 1.013×105 Pa. Pa atm

    asked by Cameron on October 21, 2018
  38. Science

    What is the difference between saltwater and freshwater?

    asked by Anonymous on September 19, 2016
  39. Environmental Science

    what is a freshwater or saltwater life zone?

    asked by Patricia on August 27, 2007
  40. Chemistry

    Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of water at -10 degrees celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol.

    asked by Linda on April 21, 2013
  41. Physics

    To help prevent frost damage, fruit growers sometimes protect their crop by spraying it with water when overnight temperatures are expected to go below the freezing mark. When the water turns to ice during the night, heat is released into the plants,

    asked by Anonymous on December 11, 2012
  42. ALGEBRA

    . Water freezes at 0◦ Celsius and 32◦ Fahrenheit and it boils at 100◦C and 212◦F. (a) Find a linear function F that expresses temperature in the Fahrenheit scale in terms of degrees Celsius. Use this function to convert 20◦C into Fahrenheit. (b)

    asked by UCHI on September 20, 2016
  43. Chemistry

    Calculate the joules of energy involved when 11 grams of water at 10.0 degrees Celsius cools and then freezes at 0.0 degrees Celsius. How many kilocalories are required to raise the temperature of 305 gtams silver from 30 degrees Celsius to 70 degrees

    asked by Palak on January 24, 2011
  44. science

    describe a freshwater or saltwater lifezone within or adjacent to the mojave desert?

    asked by kg on January 27, 2007
  45. geography

    calculate the freeboard of a 10-m thick iceberg in saltwater (seawater density of 1025 kg/ m^3)

    asked by Jackson on April 9, 2012
  46. science

    what would happen tp animals and plants in a saltwater ecosystem if it were flooded by fresh water?

    asked by Deja on January 20, 2009
  47. LA

    What are the differences between saltwater and freshwater fish? I have to write a compare and contrast essay

    asked by Beesly on January 23, 2019
  48. physics

    Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which can do the job.

    asked by sarah on November 28, 2010
  49. Calculus

    The celcius scale is devised so that 0 degrees celcius is the freezing point of water ( at 1 atmosphere of pressure) and 100 degrees celcius is the boiling point of water ( at 1 atmosphere of pressure) . If you are more familiar with the Fahrenheit scale,

    asked by Jack on September 11, 2010
  50. science

    Explain what would happen to the animals and plants in a saltwater ecosystem if it were flooded by fresh water?

    asked by Deja on January 20, 2009
  51. Physics???

    When the air temperature is below 0 C, the water at the surface of a lake freezes to form a sheet of ice. If the upper surface of an ice sheet 24.2 cm thick is at -10.7 C and the bottom surface is at 0.00 C, calculate the time it will take to add 1.80 mm

    asked by Chels on December 4, 2007
  52. Science

    Which of the following represents a heterogeneous mixture? 1)saltwater 2)air 3)bleach and water 4)chicken noodle soup I think #3 Thank you.

    asked by Jamie on September 25, 2017
  53. chemistry this is confusing to me please help

    1. List at least three things that your body strives to keep constant. Think about what aspects of your body overall, of one body organ, or of your blood stay nearly unchanged all the time. 2. Describe one way in which each of the items you listed in Part

    asked by princess on March 9, 2012
  54. Physics QUIZ

    Rising air cools as a result of a decrease in barometric pressure with altitude. (Lapse Rate) True/False? When an inflatable life jacket is inflated with a compressed air cylinder the air inside the now inflated life jacket is much colder than it was prior

    asked by ROB on December 9, 2006
  55. Algebra

    Stella is recording temperatures every day for 5 days. On the first day, Stella recorded a temperature of 0 degrees Farenheit. A. On the second day, the temperature was 3 degrees Fahrenheit above the temperature on the first day. What was the temperature

    asked by Ms. Stephie on September 18, 2014
  56. 3 grade math

    1- at 12 noon, leslie recorded the temperature as 56F. the temperature had increased by 8F from 10 A.M. the temperature at 8 A.M. was 2F warmer than it was at 10 A.M. what was the temperature at 8 A.M? MY Son write the answer is - 62F 2- the temperature at

    asked by dk on February 29, 2012
  57. water cycle

    what does water freezes into?

    asked by Anonymous on April 19, 2010
  58. CHEM

    Calculate ΔSfus and ΔSvap for HF. Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I already calculated ΔSfus as 24.103 J/k*mol and ΔSvap as 86.07 J/K*mol....These are correct (I checked them already). I need help

    asked by Srah on March 16, 2012
  59. CHEMISTRY

    Calculate ΔSfus and ΔSvap for HF. Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I already calculated ΔSfus as 24.103 J/k*mol and ΔSvap as 86.07 J/K*mol....These are correct (I checked them already). I need help

    asked by Brian on March 14, 2012
  60. Check my answers?

    A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for

    asked by Selena on November 15, 2013
  61. Earth space science, check answers?

    A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for

    asked by Selena on November 15, 2013
  62. Chemistry

    Identify which of the following changes is exothermic. a) liquid water boils to steam b) liquid water freezes to give ice c) ice melts to give liquid water d) liquid water increases in temperature from 35 C to 45 C

    asked by Anon on March 11, 2017
  63. social studies

    What geographic features lies east of the Andes Mountains? 1) saltwater grasses 2)active volcanos 3)llanos grasslands 4)mangrove swamps I think 3 Thanks

    asked by JAMIE on March 31, 2017
  64. Astrophysics

    Star Power and Temperature Star A and Star B Consider two stars that are the same size (they have the same diameter), but have different surface temperatures. Let’s say Star A’s temperature is 3000 K and Star B’s temperature is 4500 K. Let’s look

    asked by Lisa on October 9, 2012
  65. Chemistry

    You are asked to prepare a temperature bath that freezes at -25 degrees C, using only water and ammonium sulfate. a. How many grams of ammonium sulfate would you need to prepare this bath if you start with 500 grams of water? b. What would the boiling

    asked by Robin on November 14, 2012
  66. Chemistry

    How much energy is released when 44.5 of water freezes?

    asked by Delia on September 15, 2010
  67. chemistry

    How much energy is released when 48.5 g of water freezes?

    asked by re on September 6, 2009
  68. physics

    Why does water freezing not violate the second law of thermodynamics? (Hint: Think in terms of a system) The entropy of the water decreases when it freezes and goes into a more ordered crystaline state. However, heat is released to the environment in the

    asked by anonymous on February 19, 2007
  69. Physics

    Refrigerator Suppose that you want to freeze 1.2 kg of water for a party, and only have 10 minutes to do it. Relying on nothing but your keen physical abilities, a dixie cup, duct tape and a piece of string, you manage to build a refrigerator unit which

    asked by BG on November 28, 2010
  70. Science

    An echo ping is heard by a weapons control officer, onboard a destroyer, 2.0 seconds after a sound pulse is initiated in saltwater. What is the depth of the target object?

    asked by Rico on March 31, 2011
  71. physics

    Is it true that hot water freezes fast?

    asked by Jim on September 10, 2010
  72. Chem

    I have a concentration of saltwater (NaCI) in that there was 23 g of salt dissolved in .025 L of water. How many atoms were dissolved? Is this how you set it up??? .39 x(6.022x10^23)

    asked by Maria on September 22, 2014
  73. Science

    Which of the following is a pure substance? Choose all that apply. Choose 2. A)Fruit juice? B)nickel? C)saltwater? D)rust? (Fe2O3) I think it is A and C

    asked by boooooooooooyyyyyyy on September 13, 2017
  74. chemistry

    f you have 150 milliliters of water and it freezes, how many grams of ice do you have?

    asked by Kelsei-Natalie on January 27, 2011
  75. Honors chemistry

    How much heat (in kcal) is released when 62.2g of water at 0 degreesC freezes?

    asked by Hayden on April 16, 2014
  76. chemistry

    How much energy is released when 2.55kg of diethyl ether freezes?

    asked by janny on May 4, 2010
  77. chemistry

    What is the boiling point of an aqueous solution that freezes at -6.7 degress C. Please help.

    asked by swtnblk on November 5, 2011
  78. physical science

    a certain amount of water freezes and the resulting weight of the ice is

    asked by lora on June 28, 2012
  79. Chemisty

    250g of water containing sucrose freezes at -3.5C. What is the molality of the solution?

    asked by Jared on February 24, 2013
  80. chemistry

    f you have 150 milliliters of water and it freezes, how many grams of ice do you have?

    asked by Kelsei-Natalie on January 27, 2011
  81. CHEMISTRY

    What concentration of aqueous CaCl2 solution freezes at -10.2ºC?

    asked by Anonymous on November 23, 2010
  82. biology

    Saltwater is a _____ environment for a cell because the concentration of salt is greater outside the cell than inside it. A. hypertonic B. hypotonic C. isotonic D. dissolved

    asked by Lilly on October 11, 2017
  83. Chemistry

    What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees C?

    asked by Arya on February 3, 2014
  84. Chemistry II

    What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees C?

    asked by Chrystal on February 3, 2014
  85. Chemistry

    What concentration of aqueous NaOH solution freezes at negative 3.2 degrees celsius ?

    asked by Mikayla on June 17, 2012
  86. Chemistry

    Calculate the heat released when 25.0 grams of water freezes at 0 degrees celsius.

    asked by Completely Lost on December 28, 2008
  87. Biology

    Are saltwater gills different from freshwater gills? Please explain to me

    asked by Rueangsit on February 22, 2012
  88. Chemistry

    People have proposed towing icebergs to arid parts of the earth as a way to deliver freshwater. Explain why icebergs do not contain salts although they are formed by the freezing of ocean water (i.e saltwater)

    asked by Lauren on February 4, 2008
  89. Chemistry

    Find the entropy change of the universe when 2 mol of water freezes at -10 degrees celsius.

    asked by Linda on April 21, 2013
  90. Chemistry

    What is the molal concentration of an aqueous calcium chloride solution that freezes at -2.43 degrees Celsius?

    asked by Brooke on April 30, 2010
  91. Chemistry

    Will increasing the temperature of H20 before dissolving Ca(IO3)2 affect how much Ca(IO3)2 is dissolved? I think this has something to do temperature and Le Chatelier's Principle and equilibrium. So, would more be dissolved at a higher temperature than at

    asked by Minuet on February 6, 2017
  92. Math

    A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to

    asked by Alex on January 11, 2015
  93. Math

    A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to

    asked by Alex on January 6, 2015
  94. Math

    A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to

    asked by Alex on January 12, 2015
  95. 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
  96. Math

    1)At 1 p.m., Lin records an outside temperature of –14.8°F. At 3 p.m... she records the outside temperature and notices the temperature had increased by 22.6 degrees. What was the temperature that she recorded at 3 p.m.? ( no multiple choice) *my answer

    asked by Anonymous on September 16, 2014
  97. Algebra

    When Jonell checked the temperature in the morning, he saw that it was -4F. Late that afternoon, the temperature was 15F. Select the equation that represents this situation. -4+x=15;x=The number of degrees the temperature rose -4+x=15;x=The current

    asked by Katy on August 27, 2018
  98. Temperature(Math)

    At 5 o'clock in the morning, the temperature at the top of the race course was -13o. By 10:00 A.M., it was +12o. How much had the temperature risen? Answer: 25o The temperature rose from -12o to +23o by noon. How much did the temperature change? Answer:

    asked by Andrew on January 26, 2012
  99. Math (Ms. Sue! Anyone!)

    1)At 1 p.m., Lin records an outside temperature of –14.8°F. At 3 p.m... she records the outside temperature and notices the temperature had increased by 22.6 degrees. What was the temperature that she recorded at 3 p.m.? ( no multiple choice) *confused

    asked by Anonymous on September 15, 2014
  100. math

    1)At 1 p.m., Lin records an outside temperature of –14.8°F. At 3 p.m... she records the outside temperature and notices the temperature had increased by 22.6 degrees. What was the temperature that she recorded at 3 p.m.? ( no multiple choice) *confused

    asked by Anonymous on September 15, 2014