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Thermodynamics
Page 6
Questions (11,677)
Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline
mixtures. Calculate the ΔH°rxn
4 answers
asked by
Anonymous
1,819 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
358 views
Convert the following to Kelvin temperature
a)148°c (b) _132°c ( c) 27°c
4 answers
asked by
Blessing
763 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
1,222 views
If 18oo cal:of heat is added to a system while system does work equivalent to 2800 cal:by expanding against its surroundings.
4 answers
asked by
ABC
876 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
2,411 views
A cylinder contains a gas with the pressure of 125kpa at a temp. of 200k. What is the temp. of the gas at a pressure of 100kpa?
4 answers
asked by
Mina
1,201 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
664 views
A 1.0-m thin rod of aluminum is laid end-to-end with a 1.0-m thin rod of steel. The rods
are initially at 25 oC. What is the
3 answers
asked by
catherine
749 views
How much energy is released to the environment by 50.0 grams of condensing water vapor? Hv = 40.7 kJ/mol
4 answers
asked by
Diego
428 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
1,188 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
787 views
How can I tell from a graph of temperature vs. time if a reaction is endothermic or exothermic?
3 answers
asked by
Christina
1,149 views
how many Kj of heat are evolved when 6g of pure carbon is completely burned? how many grams of carbon must be burned to furnish
3 answers
asked by
Shabana
1,339 views
Ammonia (NH3) boils at -33oC; at this temperature it has a density of 0.81 g/cm3. The enthalpy of formation of NH3(g) is
3 answers
asked by
Morgan
1,990 views
Given the enthalpies of formation for the following substances, determine ƒ´Hrxn for
Cl2(g) + C2H2Cl2(g) „_ C2H2Cl4(g)
3 answers
asked by
Stephen
681 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
123 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
562 views
Octane has a vapor pressure of 40 torr at 45.1 degrees Celsius and 400 torr at 104 degrees Celsius. What is its heat of
3 answers
asked by
Dayton
1,031 views
The heat of vaporization of liquid water at 373 K is 40.7 kJ/mol. The value of the enthalpy change when 2.00 g of steam
3 answers
asked by
Anonymous
2,497 views
In 1 to 2 sentences when thermal energy is applied to ice the ices tempature rises until 0 c and then stays the same for a
4 answers
asked by
Hi
362 views
Part A: Find the amount of heat that must be extracted from 1.5 kg of steam at 130 ∘C to convert it to ice at 0.0 ∘C.
Part B:
3 answers
asked by
micheal
626 views
The temperature outside marys school is 17°c at midday by midnight the temperature has fallen by 33 °c what is the temperature
4 answers
asked by
Rio
1,222 views
Reaction: 1/2N2 + 3/2H2 --> NH3
Delta H = -46Kj/mol 1) Find delta H n(NH3)formed=5 mol. M(NH3=8.5g) 2) Find delta H a)3 mol H2 +
4 answers
asked by
Christine
594 views
Calculate the change in internal energy of 2kg of water at 90 degree Celsius when it is changed to
3.30m3 of steam at 100oC . The
4 answers
asked by
christ
435 views
Which statement best describes heat?
1. Heat flows from hot to cold and is a form of thermal energy 2. Heat flows from cold to
3 answers
asked anonymously
364 views
The temperature of some water in a bottle can be measured with a/an
3 answers
asked anonymously
26 views
If 75 grams of ice at 0 degrees celsius were added to 1.5 Liters of water at 75 degrees celsius, what would be the final
1 answer
asked by
Anonymous
458 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
609 views
Calculate the standard reduction potential for the following reaction at 25 degrees Celsius
Ag(NH3)2^+(aq) +e^- ==> Ag(s) + 2
2 answers
asked by
Steve
819 views
When 40.0 mL of 1.00 M H2SO4 is added to 80.0 mL of 1.00 M NaOH at 20.00°C in a coffee cup calorimeter, the temperature of the
6 answers
asked by
kamal
2,285 views
Iron(III) oxide can be reduced by carbon monoxide.
Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) Use the following thermodynamic data at 298
3 answers
asked by
Bea
1,450 views
Strictly speaking, NO system can be completely closed - for example, hot liquid in the best thermos eventually cools down - but
4 answers
asked by
Student12
648 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
801 views
The enthalpy of solution of nitrous oxide (N2O) in water is -12 kJ/mol and its solubility at 20 oC and 1.00 atm is 0.121 g per
2 answers
asked by
Raoul
773 views
1.20 g of hydrogen gas is completely burned in the presence of excess oxygen gas in a bomb calorimeter producing water. The heat
3 answers
asked by
Tegan
673 views
Calculate the heat of formation of water from its constituent elements from the following information:
3 H2 (g) + O3 (g) → 3H2O
2 answers
asked by
blahblah
638 views
A reaction has ÄH = -378 kJ and ÄS = -37 J/K. Calculate ÄG at 25°C to confirm that the reaction is spontaneous.
in kJ
2 answers
asked by
maddy
629 views
To calculate the increase in entropy when ice at -10°C is converted into steam at 100°C
1 answer
asked anonymously
53 views
A brass of length 10m increases 100.5 m, when heated from 50 degree centigrade 100 degree centigrade calculate its linear
3 answers
asked by
Ziggy
48 views
Click on the "Energy" button at the bottom of this simulation. Add 4 pumps (200 particles) and start changing Temperature (first
1 answer
asked anonymously
48 views
Sample of gas has a volume of 500 degree celsius what volume will the gas occupy at 0 degrees Celsius when the pressure remains
1 answer
asked by
TOP ELLA
39 views
A metal plate is a 1 m square at 283 K. There is a hole of 600 mm in diameter in the The linear coefficient of expansion of the
1 answer
asked by
ADIVHAHO
50 views
A metal plate is a 1 m square at 283 K. There is a hole of 600 mm in diameter in the The linear coefficient of expansion of the
2 answers
asked by
ADIVHAHO
34 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
49 views
What is the best description of thermal energy?(1 point) Responses
Thermal energy is a measure of an object or substance’s
1 answer
asked by
.
25 views
Question
Thermal energy is the motion of particles in a substance at a given temperature. Substances absorb light energy from the
1 answer
asked anonymously
32 views
In a building,air moves due to currents caused by temperature differences.which statement best describes these currents?(1point)
1 answer
asked anonymously
29 views
What happens to some materials when the kinetic energy of their particles is decreased they contract they expand the conduct a
1 answer
asked anonymously
30 views
Area Temperature (ºC)
downstairs 22 upstairs 26 Which statement best explains the temperature difference? Warm air rises by
1 answer
asked by
sui
13 views
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