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Phase Changes
Page 5
Questions (372)
Ice at -10degrees celcius and steam at 130 degrees celcius are brought together at atmospheric pressure in a perfectly insulated
1 answer
asked by
Elifolet
915 views
How much energy (in kilojoules) is released when 15.2g of steam at 114.5∘C is condensed to give liquid water at 63.5∘C? The
3 answers
asked by
David
783 views
How long would it take for 1.50mol of water at 100.0 degrees to be converted completely into steam if heat were added at a
2 answers
asked by
sam
791 views
how many gram of ice at 0 c can be melted by the heat released when one gram of steam condense to water at 100 c
check my answer
4 answers
asked by
Mohanad
736 views
Show the equation that 100g of 100C steam will completely melt 800g of 0C ice.
1 answer
asked by
Kay
744 views
A student had 50.0 grams of frozen alcohol and placed it in a beaker on a hot plate. The
student noted that for the first two
3 answers
asked by
Sam
727 views
How many KJ are released when 75.0g of steam at 100 degree C condenses cools to 0 degree C and freezes at 0 degree C?
I set it up
1 answer
asked by
Sue
730 views
Popcorn kernels pop independently (i.e. unimolecularly). For one brand at constant temperature, 15 kernels pop in 10 seconds
1 answer
asked by
Lizzie
746 views
How many KJ are released when 75.0g of steam at 100 degree C condenses cools to 0 degree C and freezes at 0 degree C?
I set it up
1 answer
asked by
Sue
728 views
How much energy is released when 44.5 of water freezes?
2 answers
asked by
Delia
695 views
which of the following equations shows a chemical change?
A ) c2h5oh(l)>c2h5oh(g) B ) c3h8+5o2>3co2+4h2o C ) h2o(s)>h2o(g) D )
1 answer
asked by
haven
52 views
Use appropriate chemical principles to explain why water droplets form on the outside of a beaker containing an ice bath.
I was
2 answers
asked by
Anonymous
688 views
Yes or No: Does the internal energy of the substance decrease while a gas condenses to a liquid
1 answer
asked anonymously
39 views
what are the phases of all the reactants and products in the reaction 2Al + Fe2O3--->2Fe + Al2O3?
3 answers
asked by
bethany
629 views
How much energy is required to change a 40 g ice cube from ice at -40°C to steam at 100°C?
2 answers
asked by
Erica--help!
649 views
Which of the following statements is false ?
a) S is negative when water condenses at 100oC b) Ssurroundings is positive
1 answer
asked by
Mi
654 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
Bella
51 views
How much heat energy is needed to change 0.25kg of water at 100°C to steam at 100°C? Show your work.
Please don't give me the
2 answers
asked by
Mark
639 views
the diagram above shows the heating curve for the process of ice to liquid to gas. Rachel put a bottle of soda in the freezer
3 answers
asked by
Anonymous
625 views
How much heat is gained or lost when 200 grams of ice melts?
2 answers
asked by
John
631 views
A 0.75–L bottle is cleaned, dried, and closed in a room where the air is 22oC and 44% relative humidity (that is, the water
1 answer
asked by
xavier
633 views
given the following info for water molar heat of specific heat capacity of liquid water 4.18 j/g degrees calculate the total
2 answers
asked by
jules
639 views
A cylinder with a piston contains 0.3 kg of water at 100 degrees C. What is the change in internal energy of the water when it
1 answer
asked by
Chip
608 views
What mass (in grams) of steam at 100°C must be mixed with 446 g of ice at its melting point, in a thermally insulated
1 answer
asked by
safc
621 views
How much steam at 100 degree centigrade will just melt 3200g of rice at -10 degree centigrade ? ( S.H.C of rice = 0.5 cal/g
2 answers
asked by
paresh
612 views
Assume that the pressure is one atmosphere and determine the heat in joules required to produce 3.23 kg of water vapor at 100.0
2 answers
asked by
Help
585 views
If 10.00 g of water are introduced into an evacuated flask of volume 2.500 L at 65 degreed celcius, calculate the mass of water
2 answers
asked by
Amber
596 views
The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.80 g of
2 answers
asked by
Eric
586 views
The heat of fusion of water is 335 J/g, the heat of vaporization of water is 2.26 kJ/g, and the specific heat of water is 4.184
2 answers
asked by
Dakota
580 views
what is the entropy change that occurs when 500g of water ice melts at 0 degrees celsius and 1 atm. the heat of fusin for water
2 answers
asked by
steven
585 views
How long would it take for 1.50 of water at 100.0 to be converted completely into steam if heat were added at a constant rate of
2 answers
asked by
Anonymous
566 views
Hello,
If I add water to a solid, how do i represent it in a equation with phases? for example the NaNO3 was the solid in this
5 answers
asked by
Sherlique
564 views
the mass of the water is 131 kg and its initial temperature is 24.2°C, how much energy must the water transfer to its
2 answers
asked by
kb
571 views
you wish to combine two samples, one sample contains is solid water at 0 degree celsius.The other sample contains liquid water
2 answers
asked by
treasa
563 views
Why do pure solvents show a level of horizontal curve as solidification occurs, but the curve for the solution sloped downward
3 answers
asked by
Tanimura
533 views
what is the change in heat when 23.5g water vapor at 100C condenses to liquid 18.50C
2 answers
asked by
dj
554 views
We calculated that 30.0 grams of ice initially at -10.0 Celsius and it requires 23.1 kj of energy to bring it all the way to a
2 answers
asked by
mai
530 views
The specific temperature at which a substance changes from a liquid to a gas is an example of a?
3 answers
asked by
lalt
511 views
what entropy changes occur whin a substance melts?
2 answers
asked by
harold
494 views
Water with a mass of 1000kg leaves a hose at 20oC and is converted by the heat from the fire into steam at 300oC. List the steps
2 answers
asked by
Water Q-7
513 views
Which statement explains why a rubber band analogy is not a perfect comparison for bonds in a substance when considering phase
1 answer
asked anonymously
25 views
Is there a correlation between temperature change with the changes on the molecular level? And what is it?
(talking about changes
3 answers
asked by
Kara
497 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
1 answer
asked by
Meg
513 views
Energy must be transferred into or out of a system in order to cause phase change.In addition changes in the energy can be
2 answers
asked by
treasa
488 views
How many calories would be needed to convert 8.0g of ice at 0C to steam at 100C?
1 answer
asked by
Amber
494 views
Mass of ice is 0.015 kg and that of water is 0.05 kg. Both are at 0°C. Find the final mass of ice and water.
2 answers
asked by
Debarati
447 views
3. Liquefied air (assuming it is only O2 and N2) is kept in a container where pressure and temperature can be controlled.
a. What
1 answer
asked by
haha
466 views
f the ΔH of fusion for aluminum is 10.9 kJ/mol and the ΔH of vaporization is 284 kJ/mol, then what is the change in entropy
1 answer
asked by
Jason
464 views
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
3 answers
asked by
dan
469 views
is this statement true?
More heat is needed for vaporization of a liquid compared with melting a solid of the same substance.
1 answer
asked by
laura
467 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