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Heat Transfer
Page 3
Questions (5,066)
Calculate the total heat content of 10 kg of ice at -23°C. (Hint: absolute zero is -273°C.)
Be mindful of significant figure
5 answers
asked by
Kathryn
1,303 views
The temperature of a 12.58g sample of calcium carbonate increases from 23.6degrees celcius to 38.2 degrees celcius. If the heat
5 answers
asked by
Tommy
3,881 views
A 6.75-g sample of gold (specific heat capacity = 0.130 J/g °C) is heated using 55.8 J of energy. If the original temperature
5 answers
asked by
dave
3,727 views
How much heat is given up when 20 g of steam at 100 deg C is condensed and cooled to 20 deg.C?
4 answers
asked by
Mary
3,596 views
a metal spoon is placed in one of two indentical cups of hot coffee. Which cup will be cooler after a few minutes?
6 answers
asked by
rosie
7,353 views
In a household radiator, 1000 g of steam at 100 C condenses. How much heat is released?
4 answers
asked by
G
3,195 views
What will be the equilibrium temperature when a 245-g block of copper at 285„aC is placed in a 145-g aluminum calorimeter cup
4 answers
asked by
lisa
3,097 views
A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be
placed into a bath of hot water. After this
4 answers
asked by
Eric
2,123 views
how many joules are required to heat a frozen can of juice (360 grams) from -5C (the temperature of an overcooled refrigerator
4 answers
asked by
Kelly
2,581 views
if the specifc heat of iron = 0.46J/g C,how much heat is needed to warm 50g of iron from 20C to 100C
-- I do not know how to make
4 answers
asked by
sam
5,837 views
A cube of ice is take from the freezer at -8.5C and placed in a 95g calorimeter aluminum cup containing 310g of water at 20degC.
4 answers
asked by
Mark
2,532 views
A physicist converted 2 kg of water at 37 degrees celcius to steam at 100 degrees celcius. Assuming no heat is lost, calculate
4 answers
asked by
i need help
2,007 views
1LB of ice at 20 deg f exerts its force downward. after the ice has absorbed 200 BTU's what direction will the force be exerted?
5 answers
asked by
Gilbert
1,658 views
A 1.80-cm-thick wood floor covers a 4.0 m times 5.5 m room. The subfloor on which the flooring sits is at a temperature of
4 answers
asked by
Ana
3,045 views
The question is:
A small block of ice at 0oC is subjected to 10 g of 100oC steam and melts completely. Show that the mass of the
5 answers
asked by
Mary
2,661 views
How much heat in kilojoules is required to warm 10.0 g of ice, initially at -10.0 ∘C, to steam at 115 ∘C. The heat capacity
4 answers
asked by
Carolyn
3,891 views
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
4 answers
asked by
Selena
1,992 views
Two metal rods -- one copper the other aluminum -- are connected in series, as shown in the figure below. Note that each rod is
4 answers
asked by
jawn
1,563 views
Which scenario shows conduction?(1 point)
Responses Hot soup warms the bowl where it sits. Hot soup warms the bowl where it sits.
4 answers
asked by
kali
280 views
What mass of ice is needed to cool 60g of water from 43oC to 20oC
4 answers
asked by
sam
1,229 views
Consider the following reaction:
2Na + Cl2 2NaCl ΔH = -821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate
3 answers
asked by
Joseph
852 views
A two-liter pot of tea at 85°C has _____ than a one-liter pot of tea at 85°C.
more thermal energy more heat faster-moving
3 answers
asked by
me
356 views
A Styrofoam bucket of negligible mass contains 1.75 kg of water and 0.450 kg of ice. More ice, from a refrigerator at -15.0
3 answers
asked by
Marthin
1,215 views
1.10 g of glucose was completely burnt in a copper calorimeter. The temperature of the water
increased from 25.85 °C to 36.50
4 answers
asked by
Khairavi
2,402 views
Calculate the heat in kilojoules needed to vaporize 8.00kg of water at 100∘C.
3 answers
asked by
Jacqueline
1,747 views
An object is heated to 90 degrees Celcius and is then allowed to cool in a room whose air temperature is 25 degrees celcius. If
4 answers
asked by
Hannah
1,145 views
a piece of metal of mass 50g heated to 100°c is dropped into 200g of water of 14°c in copper calorimeter weighing 80g and
3 answers
asked by
blessyn
659 views
.100 KG of an unknown metal at 94°C is placed in 100 g of water at 10°C the final temperature of the metal and water are at
4 answers
asked by
Michaela
743 views
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C
3 answers
asked by
RHS
995 views
give three examples of equipment used when heating objects
3 answers
asked by
dhruv
661 views
The temperature of piece of copper of mass 250g is raised to 100% and is then transferred to well lagged aluminum can mass 10g
4 answers
asked by
HUDSON
1,186 views
In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long,
3 answers
asked by
Eric
2,267 views
How much heat must be removed from a 200 g block of copper to lower its temperature from 302 oF to 68
oF? Specific heat of
3 answers
asked by
John
781 views
A jogger's internal energy changes because he performs 6.80 105 J of work and gives off 4.9 105 J of heat. However, to cause the
3 answers
asked by
Johnson
1,500 views
A piece of metal of mass 400g of specific heat capacity 500jkgk is place in an oven to attain a study temperature and transfer
3 answers
asked by
Hamosi
633 views
A solid object at 30°C is placed inside a container of liquid at 60°C.
What most likely will be observed? a The temperature of
3 answers
asked by
dv
121 views
A glass bottle full of mercury has 500g on being heated through 35 degree, 2.43g of mercury are expelled. calculate the mass of
3 answers
asked by
christiana
558 views
The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT/dt = -k(T - A), where T is the temperature of
5 answers
asked by
Erika
5,340 views
How much heat is required to raise the temperature of 25g of aluminum from 25.0 C to 100 C?
Convert this value to joules?
3 answers
asked by
Santiago
1,530 views
Work it out. How many joules of heat is given out when pieces of iron of mass 50g and specific heat capacity =460kgk cools from
6 answers
asked by
Peter
746 views
In an experiment, 23.0 g of ice at –25°C is converted into steam with a temperature of 124°C. How much heat is required for
2 answers
asked by
Stephen
604 views
A steam engine's boiler completely converts 155 kg of water to steam. This process involves the transfer of 3.5 x 10^8 J by
7 answers
asked by
Lindsay
2,032 views
A flask partially full of liquid water is heated to boiling and capped cold water is poured over the flask. The water boils even
3 answers
asked by
Noel
1,634 views
c= q/m*(delta)T
q= heat or energy, measured in joules (J) c= specific heat of the substance m= mass of substance (delta)T= change
3 answers
asked by
waffles
798 views
Which best describes the heat that arrives at Earth from the sun? (1 point)
A It arnves in the form of magnetism B It arrives in
1 answer
asked anonymously
35 views
W17.The pV-diagram of figure below shows a series of thermodynamic processes.
In process ab, 150J of heat is added to the system;
1 answer
asked by
Jeremiah latkuoth
46 views
Jeriah places two metal cubes in contact with each other. Energy and heat flow from cube A to cube B. What conclusion can be
1 answer
asked anonymously
23 views
In a building, air moves due to currents caused by temperature differences. Which statement best describes these currents?(1
1 answer
asked by
nuh uhh
21 views
A 15.7g block of an unknown metal is warmed to 53.2o C and plunged into an insulated beaker containing 32.5g of water initially
4 answers
asked by
Salma
991 views
calculate the amount of heat required to change 5 pounds of ice at 32 degrees to water 32 degrees
5 answers
asked by
miguel
4,700 views
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