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Phase Changes
Page 4
Questions (372)
What mass (in grams) of steam at 100°C must be mixed with 340 g of ice at its melting point, in a thermally insulated
1 answer
asked by
chirayu
676 views
Calculate the energy that must be removed to convert substance X from a gas at 116°C to a solid -44.6°C. Assume X has a molar
2 answers
asked by
Rachelle
1,308 views
How many joules of heat are required to melt 40kg of ice at 0 degrees celsious?
3 answers
asked by
Jordan
516 views
My teacher provided info about a worksheet of problems.
Special Heat of water: 4.184 Special Heat of Steam: 2.09 Special Heat of
2 answers
asked by
Meg
523 views
I asked a question earlier about a thermometer in a can containing a substance that is being heated.Temperature remains the same
2 answers
asked by
Courtney
534 views
why does the temperature of boiling water remain the same as long as the boiling continues?
Because it is a pure compound
2 answers
asked by
jan
844 views
why does the dry ice form clouds of white vapor, especially when you blow on it? what is the vapor composed of?
The vapor is
1 answer
asked by
janis
1,168 views
If you increase the pressure, what phase changes are likely to occur?
1 answer
asked by
Daniel
18 views
Why is it a physical change to freeze water?(1 point)
Responses Heat is released during the process. Heat is released during the
1 answer
asked anonymously
45 views
Which of the following phase changes involves a gas turning into a liquid?
a. Condensation b. Boiling c. Sublimation d. Freezing
1 answer
asked by
person
79 views
How many grams of ice could be melted by the energy obtained as 18.0 grams of steam is condensed at 100.0 degrees celcius and
3 answers
asked by
PLEASE
4,218 views
at 20 C the vapor pressure of dry ice is 56.5 atm. if 32 g of dry ice is placed in an evacuated .25 l chamber at a constant
3 answers
asked by
david
2,906 views
Ethanol (C2H5OH) melts at -114 oC and boils at 78 oC. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of
3 answers
asked by
RPatel
2,118 views
The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to a liquid at -161°C. Water
3 answers
asked by
Anonymous
2,047 views
Knowing that delta Hvap for water is 40.7 kJ/mol, calculate Pvap of water at 46 C
4 answers
asked by
Help
1,859 views
When ice at 0°C melts to liquid water at 0°C, it absorbs 0.334 kJ of heat per gram. Suppose the heat needed to melt 30.7 g of
3 answers
asked by
Lance
1,649 views
The normal melting point of H2O is 273.15 K, and deltaH fusion is 6010 J/mol. Calculate the change in the normal melting point
6 answers
asked by
Jason
1,583 views
15)Which of the following shows the correct sequence of what happens to the water molecules in an ice cube when it is removed
4 answers
asked by
#FreeGucci
1,553 views
what is the delta u when 1.00mol of liquid water vaporizes @ 100C? The heat of the vaporization, delta h, of water @ 100C is
4 answers
asked by
yesenia
1,503 views
How much energy (in kilojoules) is released when 12.3g of steam at 121.5degree C is condensed to give liquid water at 64.5
4 answers
asked by
Lauren
1,481 views
How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes?
The normal boiling point is 1357 K, and heat
4 answers
asked by
Andrew
1,450 views
which is true about evaporation and condensation
1 answer
asked anonymously
14 views
What total energy must be absorbed (from the environment) to change 1.00kg of ice at -30.0°C on a lake surface in February to
3 answers
asked by
J.M.
1,350 views
Calculate the entropy change accompanying conversion of 1 mole of ice at 273 K and 1 atm pressure into steam at 373 K and 1 atm
2 answers
asked by
Mahesh
1,338 views
how much heat is required to completely vapporize 2.3 grams of ice starting at -50 degrees Celsius? (the specific heat of ice is
2 answers
asked by
Anonymous
1,284 views
A copper Calorimeter of mass 150g,was half-filled with water of mass 300g and a temperature of 0°C.5g of ice of mass 0°C was
3 answers
asked by
tony
1,231 views
At the melting point of benzene, the DH of fusion is 9.95 kJ/mol and the DS of
fusion is 35.7 J/K.mol. What is the temperature at
2 answers
asked by
Ashley
1,204 views
confused about this one.
2 samples of water of equal volume are put into dishes and kept at room temp for several days. the water
1 answer
asked by
david
1,134 views
why is it a physical change to freeze water?
a. The new and original substances are different. b. Only a phase change occurs. c.
1 answer
asked anonymously
38 views
Which of the following phase changes involves a gas turning into a liquid?
a Condensation b Boiling c Sublimation d Freezing
1 answer
asked anonymously
72 views
An ice cube tray full of water is put into a freezer. Which energy change occurs in the particles in the water as it undergoes a
1 answer
asked by
Uncle moe last name lester
58 views
A solution containing 80g of NaNO3 in 75g of H2O at 50 degrees celsius is cooled to 20 degrees celsius, how many grams of solid
1 answer
asked by
Boo Boo
1,091 views
Steam of mass 11.0 g at 100°C is added to 114.8 g of ice at 0.00°C. Find the final temperature of the system.
3 answers
asked by
Joseph
1,072 views
If the time taken to melt 10g of ice at 0 degree Celsius is 1 minute, how long will it take to vaporize 10g of water at 100
3 answers
asked by
Da S
1,052 views
Which of the following procedures increases the average kinetic energy of the molecules in a beaker of water.
1. heating water
2 answers
asked by
Wanda
1,049 views
What is the amount of work produced when 1.0 g of H2O (l) is boiled at atmospheric pressure? Assume the liquid has no volume.
2 answers
asked by
Karen
967 views
1- When a solid like carbon dioxide changes directly into a gas without becoming a liquid its a____________.
2-what are the
2 answers
asked by
Jennifer
967 views
The molecules water (H2O) and methane (CH4) have similar masses, but methane changes from a gas to liquid at -161 degrees C.
2 answers
asked by
Jack
973 views
How much energy is released when 48.5 g of water freezes?
2 answers
asked by
re
945 views
The boiling point of an aqueous solution is 102.35 °C. What is the freezing point? Constants can be found here.
4 answers
asked by
Heather
965 views
An ice cube of mass 10g at -10C is added to the beaker containing 150mL of water at 88.5C. Assuming no heat is lost to the
2 answers
asked by
Bill
947 views
Why was sublimation performed under reduced pressure?
1 answer
asked by
Vivian
914 views
Which of the following is an example of a chemical change (change in chemical composition) that involves starting with a liquid
3 answers
asked by
k
891 views
If a solution were to change its composition during freezing how do you think this would change the cooling curve.
1 answer
asked by
Chrissy
887 views
Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to Earth again as
2 answers
asked by
w
897 views
Why during melting, particles gain energy and vibrate more, until they are able to overcome the forces that hold them in their
2 answers
asked by
StuartKess
839 views
Thermal Energy Quick Check
2 of 42 of 4 Items Question Use the graph and diagram to answer the question. The vertical axis is
1 answer
asked by
#Dogmama
83 views
when water kept at zero degree celcius it become ice.similarly what happens when ethanol kept at zero degree celcius?
2 answers
asked by
mohan
808 views
What mass (in grams) of steam at 100°C must be mixed with 341 g of ice at its melting point, in a thermally insulated
2 answers
asked by
tim
828 views
What is the final temperature and state of water when 8.50 kJ of energy is added to 10.0 g of ice at 0 degree Celsius.
Helpful
2 answers
asked by
Neveah
839 views
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Parent Categories (33)
Changes in Matter
Changes of State
Chemical changes
Chemical Reactions
Chemistry
Energy
Energy Changes
Energy Transfer
Entropy
Heat and Energy Transfer.
Heat and Temperature
Heat and Thermodynamics
Heat energy calculations
Heat Transfer
Matter
Matter and States of Matter
Phases of Matter
Physical Changes
Physical Chemistry
Physical Processes
Physical Properties
Physical Science
Physical Sciences
Physics
Physics / Thermodynamics
Properties of Matter
Solid State Physics
Solutions
States of Matter
Thermal Energy
Thermodynamics
Transformations
Water Cycle