In which of the following phase transitions is energy released? liquid to solid solid to gas liquid to gas solid to liquid please help

36,320 results
  1. science

    Rank the phases of matter from the one with the least kinetic energy to the greatest kinetic energy for the particles in the substance.(1 point) Least gas ↓ solid Greatest liquid Least solid ↓ gas Greatest liquid Least gas ↓ liquid Greatest solid

  2. Science

    what list shows the property of matter in the order from the greatest average kinetic energy to the least average kinetic energy per particle A Solid, liquid, gas B gas, liquid, soild C Solid, liquid, gas D Liquid, solid, gas

  3. Science

    Which statement is correct about the inner core and mantle of the Earth? (1 point) A.The mantle is entirely liquid, while the inner core in entirely solid. B.The mantle is both solid and liquid, while the inner core in entirely liquid. C.The mantle is

  4. chemistry

    What is the balanced formula for Solid iron 3 oxide reacts with hydrogen gas to form solid iron and liquid water?

  5. science

    Of the three properties of color, hardness, and reflectivity, which property or properties describe how a material interacts with light?(1 point) reflectivity only reflectivity only color, hardness, and reflectivity color, hardness, and reflectivity

  6. science

    Which phases does water go through if you use distillation to separate it from dissolved sugar? A)from a liquid to a solid, and back to a liquid B)from a liquid to a solid, and then to a gas C)from a liquid to a gas, and back to a liquid D)from a solid to

  7. Science CBA Test

    In terms of particles, what is the difference between a liquid and a solid? A) a liquid has more thermal energy than a solid B) A solid has more thermal energy than a liquid C) Both solids and liquids have the same amount of thermal energy

  8. science --- pls check my work!!!

    hi, pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) solid*** liquid gas molecule 2. Why is a gas able to flow? (1 point) Its particles have melted and can move around.Its particles have high viscosity and can move

  9. chemistry

    What is true about kinetic energy and the mobility of solid, liquid, and gas particles? The average kinetic energy of the particles decreases as the particles go from a liquid state to a gas state because gas particles do not interact with each other. The

  10. science

    In which of the following phase transitions is energy released? liquid to solid solid to gas liquid to gas solid to liquid please help

  11. Chemistry

    Which of the following reactions is exothermic? 1. Na(s) --> Na(g) 2. Na(g) --> Na+ + e- 3. Cl2(g) --> 2Cl(g) 4. Cl(g) + e- --> Cl-1 My guess is 4, but I'm not sure Here is what you do. For 1, do we think it will take energy to change Na as a solid to Na

  12. chemistry

    Write the balanced equation for the hydration of CuSO4. Indicate the physical states using the abbreviations (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) to indicate the aqueous phase. Indicate appropriate charges on negative and

  13. science(pls help :D)

    Particles have enough energy to break free from each other and can move around freely. What kind of substance is described? A:solid B:liquid C:gas D:Molecule

  14. Chemistry

    When the solid and liquid phases are in equilibrium, which phase, solid or liquid, contains the most amount of energy (kenetic energy is the same)? Also, what is the difference between the melting and freezing of a substance?

  15. Chemistry

    which phase change is endothermic ? (1)gas-->solid (2)gas-->liquid (3)liquid-->solid (4)liquid-->gas

  16. Science

    1: Use the table to answer the question. Student Name | Potential Energy Rating (lowest to highest) ------------------------------------------------------------------------------------- Henry | gas, liquid, solid

  17. physics

    This graph in the figure (Figure 1) shows how the temperature of an initially solid sample changes as time goes by when it is placed above a flame that delivers a constant heating power (that is, a fixed amount of energy input in the form of heat each

  18. chem

    HOw much energy is required to heat 36.0g H2O from a liquid at 65C to a gas at 115C? The following physical data may be uselful. Hvap=40.7kJ/mol C liquid=4.18 C gas=2.01 C solid= 2.09 T melting=0 C T boiling=100 C The answers about 87.7 kJ However I'm not

  19. Science

    What occurs when a substance melts? 1) It changes from solid to liquid, and heat is absorbed. 2) It changes from solid to liquid, and heat is released. 3) It changes from liquid to solid, and heat is absorbed. 4) It changes from liquid to solid, and heat

  20. I need help

    Which of the following models would best represent the inner and outer core of Earth, based on the physical characteristics of each layer? A. A metal ball (solid) suspended (floating in the middle) in oil (liquid) B. Jello (red semi-solid) on top of a

  21. science

    What takes place when heat energy is added to a liquid? A) The particles will increase in speed/temperature, and will eventually reach a point where they can change phases to a gas. B) The particles will increase in speed/temperature and eventually will

  22. science

    1. The ability of an apple to change color when exposed to air is a ____. (1 point)physical property chemical property physical change chemical change 2. Which of the following is NOT a possible sign of a physical change? (1 point)a change in appearance a

  23. science

    The diagram below represents a phase change. Which of the following best describes what is happening in the diagram? A. A liquid is changing into a gas because pressure in the system is increasing. B. A gas is changing into a liquid because thermal energy

  24. Chemistry

    What can be said about a substance with a triple point above 1atm 1) The liquid state of the substance cannot exist. 2) The gaseous state at 1 atm pressure cannot be condensed to the solid at the triple point temperature. 3) The melting point of the solid

  25. Chemistry

    What changes of state are involved in this use of ethyl chloride? Select all that apply. Select all that apply. 1-liquid to gas 2-liquid to solid 3-gas to solid 4-liquid to solid 5-solid to liquid 6-solid to gas

  26. Chemistry

    1. gas to liquid 2. liquid to gas 3. solid to gas 4. solid to liquid 5. gas to solid 6. liquid to solid Please label the reactions above into the groups: ΔH=+, ΔS=+ ΔH=+, ΔS=- ΔH=-, ΔS=+ ΔH=-, Δs=-

  27. Science

    7. Which of the following changes gives no evidence that a chemical reaction has taken place? A cube of solid forms a puddle of liquid. A certain liquid is added to a solid, and bubbles of gas form. Two liquids are mixed, and a precipitate forms. Heating a

  28. College Chemistry

    A 32.85-{\rm g} sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 46.00 mL. The solid and toluene together weigh 58.56 g. The density of toluene

  29. Chemistry Honors

    Use the diagram below to answer the following question. What will be water's phase of matter at a temperature of 74°C and a pressure of 4.4 mm? A. mostly liquid B. mostly solid C. solid, liquid, or gas D. mostly gaseous Answer: D

  30. Chemistry

    Construct a cooling curve (looks the same as a heating curve) for a substance with a molar mass of 200 that has a gas phase specific heat capacity of 2.9J/g K, a boiling point of 525 K,a liquid phase specific heat capacity of 3.24 J/g K, a freezing point

  31. Physical Science

    1. which of the following should be classified as a suspension? A. soda** B. sand in water C. glass D. milk 2. Which of the following is an of example of a chemical property? A. density B. flammability C. hardness** D. melting point 3. Which state of

  32. Chemistry

    a change in pressure would have the greatest effect on the solubility of a A. solid in a liquid B. gas in a liquid C.liquid in a liquid D.liquid in a solid in an aqueous solution of potassium chloride, the solute is A. Cl B. KCl C. H20 D. K B for the

  33. 12 chem

    Q. When 300ml of Ticl4(gas), at 48 degrees Celcius and a pressure of 105.3 kPa, is reactes with 0.4320 g of magnesium, 0.4016 g of titanium is produces. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction.

  34. chemistry

    As the temperature of a gaseous substance is decreased at constant pressure, it will undergo a series of physical changes. Which is the correct sequence of physical states that will be encountered? a.Liquid, solid, gas b.Gas, solid, liquid c.Solid, liquid,

  35. CHECK my answers Physical science

    1. which of the following should be classified as a suspension? A. soda** B. sand in water C. glass D. milk 2. Which of the following is an of example of a chemical property? A. density B. flammability C. hardness** D. melting point 3. Which state of

  36. Phase diagram

    Question: A solid substance has a vapor pressure of 800 mm Hg at its melting point (80 degrees C). Describe how the solid behaves as temperature is raised from room temperature to 80 C while the atmospheric pressure is held constant at 760 mm Hg. I think

  37. College Physics

    Dry Ice. At standard atmospheric pressure, the solid form of carbon dioxide called “dry ice” undergoes a phase change not to a liquid but straight to a gas. This process is called sublimation, and like other phase transitions heat energy is required.

  38. IPC

    What is the change of phase from a solid to a gas? I know, liquid to gas is evaporation. So what if it skips the liquid part? Help?

  39. science

    If the inner core reaches temperatures exceeding 6000c, in what phase/state of matter would these matters exist? A. gas; the temperature is so great that the atoms vaporize B. solid; the pressure is so great that the atoms are forced together C. liquid;

  40. help on a question

    I needed help on a physical science question. When the molecules in a body move with increased speed, it's possible that the body will change from a... A) gas to a liquid B) gas to a solid C) liquid to a solid D) liquid to a gas PLEASE HELP ME!! If the

  41. Science

    Which of the following models would best represent the inner and outer core of Earth, based on the physical characteristics of each layer? A metal ball (solid) suspended (floating in the middle) in oil (liquid) Jello (red semi-solid) on top of a cracker

  42. chemistry

    (a) The phase diagram of the binary system, neodymium-scandium (Nd-Sc) is given below. There are two polymorphs in the solid state: α which is hexagonal close packed (HCP) and β which is body-centered cubic (BCC). Identify all phases present at points 1,

  43. Science 8R - help

    Homework - Look around your house and give an example of each phase of matter phase of matter is gas, liquid, and solid????? right???

  44. Science

    1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement

  45. chemistry

    What is the conjugate acid base in this equation: h2so4+h20---Hso4^-+h3o^+ 2:) which phase of matter can act as a solvent. A.gas B.solid C.liquid D.all the above

  46. chemistry

    Examine the scenario. A soda factory dissolves carbon dioxide (CO2) into water (H2O) as part of its manufacturing process. Which answer choice correctly categorizes the solution the soda factory is creating? liquid-gas gas-liquid liquid-liquid solid-liquid

  47. Science

    Please Check my Work:pls check my work asap! 1. A ___ has a definite shape and a definite volume. (1 point) 1. solid (My Choice) 2. liquid 3. gas 4. molecule 2. Why is a gas able to flow? (1 point) 1. Its particles have melted and can move around. 2. Its

  48. chemistry

    which of the following steps in the formation of KCI releases energy? A.K{solid} -> K{gas} B.K {GAS} -> K+ {GAS} + e- C.C1 {GAS} -> C1- {GAS} D.C1 {GAS} + e- -> C1 - {GAS} E. K+ {GAS} + C1- {GAS} -> KC1 {SOILD} A. A B. C C. B AND A D. D AND E I will be

  49. Chemistry

    Is liquid-liquid extraction or solid-phase extraction a better approach to process very large amounts of water?

  50. chemistry grade 12 science

    Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction -

  51. Chemistry

    What is true for water? A) In a phase diagram the solid-liquid coexistance line has a negative slope. B) In a phase diagram the solid-liquid coexistance line has a positive slope. C) The solid is more dense than the liquid. D) The solid is less dense than

  52. Physics

    A solid is completely submerged in a particular liquid and floats at a constant level.when the temperature of the liquid in the solid is raised, the liquid expands more than the solid. will this make the solid rise upward remain floating or sink explained

  53. sci.

    How do you rank water in terms of density (solid liquid and gas)? (from least to greatest). I think it would be gas, solid, and liquid, but I just wanted to confirm this thanks

  54. chemistry

    which characteristics of solid, a liquid, and a gas are exhibited by each of the following substances? how would you classify each substance? A. a bowl of pudding will be solid and B. a bucketful of sand wiil be solid

  55. AP Chemistry

    Consider a 50.4 g sample of H2O(g) at 115°C. What phase or phases are present when 156 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J/g·°C; liquid, 4.2 J/g·°C; steam, 2.0 J/g·°C, ÄHvap = 40.7 kJ/mol, ÄHfus = 6.02

  56. Biology (Please Help!)

    When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of

  57. Biology

    When we spin around in one place and stop, we feel as though we are still moving. This feeling is caused by continued Select one: A. transmission of nerve impulses from cochlea to auditory nerve B. movement of fluid against cochlea C. vibrations of

  58. Science plz

    Which of the following models would best represent the inner and outer core of Earth, based on the physical characteristics of each layer? A. A metal ball (solid) suspended (floating in the middle) in oil (liquid) B. Jello (red semi-solid) on top of a

  59. Some Chemistry Questions

    I got three questions. If you were making a tool used to handle live electrical wires, which class of materials would you most likely use? ***Semimetals Metalloids Nonmetals Metals Which of the following changes gives no evidence that a chemical reaction

  60. Chemistry

    Can you show me the process that you need to take to balance this basic redox reaction using the ion electron method? Tl2O3(solid) + NH2OH(liquid) --> TlOH(solid) + N2(gas) + H2O(liquid)

  61. Chemistry

    Given the following information about xenon normal boiling point = -108 degrees C normal melting point = -112 degrees C triple point = -121 degrees C at 281 mmHg critical point = -16.6 degrees C at 58 atm a) Construct an appropriate phase diagram for xenon

  62. science

    what are the arrangement and motions of molecules of substances in the solid phase, liquid phase, and gaseous phase?

  63. chemistry

    Some physical properties of water are shown below: melting point 0.0°C boiling point 100.0°C specific heat solid 2.05 J/g·°C specfic heat liquid 4.184 J/g·°C specific heat gas 2.02 J/g·°C ΔH° fusion 6.02 kJ/mol ΔH° vaporization 40.7 kJ/mol 80.0

  64. Chemistry

    When comparing the boiling points of two compounds,one is a gas and the other is a liquid,is there anything like the liquid will have a lower boiling point than the solid? The molecular mass of the liquid is lower than the solid and they have the same type

  65. Science

    When does H2O absorb heat without changing temperature? a)When it is ice (in its solid phase) b)When it is melting c)When it is water (in its liquid phase) d)When it is boiling c)When it is steam (in its vapor phase) My Answer: B, D

  66. Chemistry

    which produces the greatest entropy increase? melting the solid heating the solid heating the liquid heating the gas vaporizing the liquid is it melting the solid?

  67. chemistry

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

  68. Chemistry

    (a) The phase diagram of the binary system, neodymium-scandium ( Nd-Sc ) is given below. There are two polymorphs in the solid state: alpha which is hexagonal close packed (HCP) and beta which is body-centered cubic (BCC). Identify all phases present at

  69. chemistry

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

  70. Chemistry

    Which method increases the surface of a solid, allowing it to dissolve faster? A)changing the state of the solid B)adding gas to the solid C)heating the solid D)reducing the size of the solid ****Please help!!!!******* I think the answer is C but i am not

  71. Science

    Please check my answers (at the bottom) with these questions. 1. An apple quickly changes color when exposed to air. This demonstrates a ________. (1 point) physical property chemical property physical change all of the above 2. When a chunk of dry ice is

  72. chemistry

    Kc = [Na+][Cl-]/[NaCl(s)] The above equation contains the concentration of NaCl in solid NaCl. This concentration is related to the density of solid NaCl and its molar mass. Since the density of NaCl or of any pure solid or pure liquid does not vary with

  73. chemistry

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

  74. Chemistry

    5. On the basis of a solubility curve for KNO3 what type of substance would you expect KNO3 to be? Choices: solid liquid gas It is impossible to tell. I don't want the answer. All I want to know is, can you tell whether something is a liquid/solid/gas just

  75. Chemistry

    Phase diagrams- Explain how the density of the solid and liquid phase would compare.

  76. Chemistry

    A cube of solid reactant with sides of 1.00 cm² is submerged in a liquid and reacts to form a gas product at an initial rate of 20 mL/s. The solid-liquid interface is 6.0cm² of surface area. If you sliced this cube (like a block of cheese) into 10

  77. science 2

    6. When aqueous solutions of table salt and silver nitrate are mixed, a white solid forms. This solid is ____. (1 point)soluble a precipitate an alloy a solute 7. Stainless steel is an example of a ____ solution. (1 point)liquid-solid solid-liquid

  78. chemistry

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

  79. eighth grade math

    at temperaturesof 100 degrees celsius or higher, water changes to steam (a gas).At temperatures of 0 degrees celsius or lower water changes to ice (a solid) . in between these extremes, water is a liquid. draw number lines showing the tempertures at which

  80. Science

    1- When a solid like carbon dioxide changes directly into a gas without becoming a liquid its a____________. 2-what are the states of matter in order, from the greatest thermal energy to the lest thermal energy__________, ____________,and ___________. 3-

  81. Chemistry

    I am having trouble balancing the following equation using the Ion-Electron Method. Se(solid) + HNO3(aqueous) ----> SeO2(solid) + NO(gas) + H2O(liquid) Can you explain the steps that you have to take to solve it?

  82. Organic Chemistry

    Hello! I was looking for some advice on my organic chemistry lab. We were supposed to separate and identify a solid mixed into a liquid. I found and have confirmed my liquid is acetone by distilling it out of the solid. The solid then turned into a whitish

  83. chemistry

    Which phase of ionic compounds are good electrical conductors because the ions are free to carry electrical current? A. Solid B. Liquid C. Gas D. Crystalline I say B

  84. Chemistry

    i have no idea how to set this problem up! please help! A 22.19-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.0 mL. The solid and

  85. Physics

    A mass M of solid metal at temperature T is put into 3.0kg of water which is initially at 90◦C. The metal and water are placed in an insulated container. The specific heat for water is 4186 J kg K . The metal has a melting point of 60◦C. The latent

  86. science

    name one example each of a solid, liquid and a gas. arrange them in the decreasing order or the kinetic energy possessed by the particles in them

  87. physics

    Jacob found a piece of a broken glass bottle. He picked it up and made these observations about it: 1. No color (clear) 2. Makes scratches on wood 3. Has a bumpy surface 4. Broke when I dropped it He thinks the glass is a solid and most of his observations

  88. physics

    Jacob found a piece of a broken glass bottle. He picked it up and made these observations about it: 1. No color (clear) 2. Makes scratches on wood 3. Has a bumpy surface 4. Broke when I dropped it He thinks the glass is a solid and most of his observations

  89. CHEMISTRY

    Consider a 58.4 g sample of H2O(g) at 125°C. What phase or phases are present when -162 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J g-1 °C-1; liquid, 4.2 J g-1 °C-1; steam, 2.0 J g-1 °C-1, ΔHvap = 40.7 kJ/mol, ΔHfus

  90. Chemistry

    Shown below is a rough sketch of the unary phase diagram (pressure vs. temperature) for carbon dioxide , dry ice. Note the diagram is not drawn to scale and contains breaks in the axes to signify this. Using the diagram, answer the following questions: (a)

  91. Physics

    A solid hass of 400g in air and partly immersed in a certain liquid it has a mass of 320kg .given that the relative density of the liquid is 0.80. Calculate the volume of the solid immersed in the liquid.

  92. Chemistry

    Spontaneity of Solid Phase Change Two crystalline phases of white phosphorus are known. Both contain P4 molecules, but the molecules are packed together in different ways. The α phase of the solid (P4; density≅1.82 g/cm3) is always obtained when molten

  93. Physics

    How much energy is released by 10 kg of liquid silver at 961°C as it cools to solid silver at 20°C?

  94. Science

    I need help filling this blank. The difference between a "cool" solid and a "hot" solid is that the particles vibrate __________ in the cool solid. Would "freely" fit the blank? The difference between a solid and a liquid at the same temperature is that

  95. Science

    In a(n) ___, the particles form a regular, repeating pattern. Answerlist: viscous liquid melting liquid amorphous solid or crystalline solid

  96. Chemistry

    Calculate the heat energy released when 19.6 of liquid mercury at 25.00 C is converted to solid mercury at its melting point

  97. CHM

    Heat of fusion (¦¤Hfus) is used for calculations involving a phase change between solid and liquid, with no temperature change. For H2O, ¦¤Hfus=6.02 kJ/mol. Specific heat capacity (C) is used for calculations that involve a temperature change, but no

  98. Science

    Can you please help me figure out why evaporation is a cooling process and why becoming a solid is a heating process? evaporation absorbs heat from the environment, thus "cooling" the environment. becoming solid is a heating process as heat is moved from

  99. Chemistry

    which method increase the surface of a solid, allowing it to dissolve faster? A)changing the state of the solid B)adding has to the solid C)heading the solid D)reducing the size of the solid

  100. chemistry grade 12

    Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction -

Pages

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20