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Thermodynamics
Page 5
Questions (11,563)
A power plant has a power output of 1055 MW and operates with an efficiency of 33.0 percent. Excess energy is carried away as
4 answers
asked by
ricki
2,238 views
22.) The molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively, and the specific heat
4 answers
asked by
Adriana
3,647 views
How to calculate the amount of heat released when 15.0 g steam at 117°C is converted to ice at -10°C
4 answers
asked by
cristy anne jiemenez
491 views
What is the molar change in enthalpy when 100g of ice is heated from -72°C to -18.2°C?(cp=37.4 J/k•mol)
Would the answer be
4 answers
asked by
Lauren
1,129 views
a tank of helium gas used to inflate toy baloons is a pressure of 15.5 x 10 Pa and a temp of 293 k. The tank's volume is 0.020
4 answers
asked by
Rita
2,459 views
In which one of the following processes is ΔH = ΔE?
a. 2HI(g) → H2(g) + I2(g) at atmospheric pressure. b. Two moles of
4 answers
asked by
seth
6,501 views
A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118
4 answers
asked by
Layn
1,810 views
13.A student mixed 5.00 g (0.0594 mol) of solid cyclohexane, C6H12, (84.18 g mol–1) at its melting temperature of 6.6°C with
4 answers
asked by
Mack
2,065 views
Distinguish between real and apparent cubic expansivity of a liquid.A glass bottle full of Mercury has mass 500g an being heated
4 answers
asked by
Mamshep Joseph Ponmwa
1,785 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
2,397 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
656 views
Calculate the enthalpy change in kilojoules when 54.7g of MgCO3 decomposes according to the following equation:
MgCO3 (s) into
3 answers
asked by
Mandy
1,816 views
Calculate the standard entropy change for the reaction of calcium oxide with water to form calcium hydroxide: CaO(s) + H2O(ℓ)
3 answers
asked by
Anonymous
1,807 views
Calculate the quantity of heat gained or lost in the following change:
0.44 mol of water evaporates at 100 degrees Celsius - So
2 answers
asked by
Kid
1,353 views
The combustion of carbon monoxide is represented by the equation below:
CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value
4 answers
asked by
Nick
1,083 views
A
glass bottle full of mercury has a mass 500g. 35°C, 2.43g of mercury are expelled. Calculate the mass of f mercury remaining
3 answers
asked by
Ikk
850 views
A quantity of 85.0 mL of 0.900 M HCl is mixed with 85.0 mL of 0.900 M KOH in a constant-pressure calorimeter that has a heat
3 answers
asked by
Daniella
2,771 views
How can I tell from a graph of temperature vs. time if a reaction is endothermic or exothermic?
3 answers
asked by
Christina
1,136 views
What are the steps to solve this problem? "The enthalpies of combustion of glucose and ethanol are -2813kj/mol and -1369kj/mol,
3 answers
asked by
Julie
1,032 views
How much ice at 0 degrees celsius can be melted with 1kg of steam at 100 degrees celsius, assuming no loss of energy to the
3 answers
asked by
Mariya
844 views
The thermochemical equation for the combustion of hexane is shown below.
2 C6H14 (g) + 19 O2 (g) → 12 CO2 (g) + 14 H2O (g)
3 answers
asked by
Hunter
1,292 views
if a piece of aluminum with mass 3.99g and a temperature of 100C are dropped into 10cm^3 of water at 21C, what will be the final
3 answers
asked by
garrick
1,824 views
Calculate the heat of formation of propane if the heat of combustion is -2220kj/mol.The heat of formation of carbon (IV) Oxide
1 answer
asked by
Peter Omato
139 views
How much heat is necessary to change 345 g of ice at -11°C to water at 20°C
1 answer
asked by
kim
891 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
640 views
A glass bottle full of mercury has a mass of 50g. On being heated through 35 degree Celsius, 2.43g of mercury are expelled.
4 answers
asked by
ifeanyi
832 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
32 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
21 views
LEAD IS A SOFT, DENSE METAL WITH A SPECIFIC HEAT OF 0.028KCAL/KGC, A MELTING POINT OF 328.0C, AND A HEAT FUSION OF5.5KCAL/KG.
7 answers
asked by
Jessica
4,408 views
A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0. °C. What is the new
5 answers
asked by
Anonymous
13,297 views
When 1.0 mole of liquid Br2 is converted to Br2 vapour at 25.0oC and 1.0 atm pressure, 7.3 Kcal of heat is absorbed, and 0.59
5 answers
asked by
sam saad
1,099 views
What is the entropy change for the vaporization of 2.6 mol H2O(§¤) at 100◦C and 1 atm? dH= 40700 J/mol
Answer in units of J/K
4 answers
asked by
Samantha
3,110 views
The problem is: Calculate the standard free-energy change for the following reaction at 25 degrees Celsius.
2Au^+3(aq) + 3Cr(s)->
6 answers
asked by
Tiffany
14,240 views
The speed of sound in air (m/s) depends on temperature according to aprox expression of
v= 331.5 + 0.607 Tc Tc= temp in celcius
9 answers
asked by
~christina~
5,079 views
The density of a gas is 1.96 g L–1 at 1.00 atm and 0
°C. What is the density of this gas at 0.855 atm and 25.0 C?
5 answers
asked by
Anonymous
3,940 views
The standard enthalpies of formation of ions in aqueous solutions are obtained by arbitrarily assigning a value of zero to H
7 answers
asked by
Willy
8,146 views
Calculate ∆G0 for the following reaction.
4XY + 3Z2−→2Z3X2+ 2Y2 Substance ∆H0f S0kJ/mol J/mol·K XY 205.0 75.0 Y2 −82.0
5 answers
asked by
Gabriella
4,802 views
Potato flakes (moisture content = 75% wet basis) are being dried in a concurrent flow drier. The moisture content of the air
4 answers
asked by
MARIA
915 views
Which statement explains how heat causes materials to expand?
a. Higher temperatures increase the kinetic energy of the
4 answers
asked by
purple koala
190 views
Please show work
You decide to take a nice hot bath but discover that your thoughtless roommate has used up most of the hot
4 answers
asked by
Anonymous
2,707 views
The standard enthalpies of formation of gaseous propylene (C3H6) and propane (C3H8) are +20.4kJ/mol and -103.8 kJ/mol. Their
4 answers
asked by
Brigette
7,660 views
You are taking a road trip in a car without A/C. The temperture in the car is 93 degrees F. You buy a cold pop at a gas station.
4 answers
asked by
Anonymous
4,187 views
Why are open systems inappropriate for studying the conservation of mass?
Heat can escape from or enter the system. Matter may be
1 answer
asked by
no
177 views
What happens when thermal energy is applied to an ice cube? (1 point)
Its water molecules lose kinetic energy, so the ice cube
3 answers
asked by
Hlo
162 views
How many Btu's are required to change five pounds of ice at 20°F to water at 160°F?
a. 2,608 Btu’s b. 1,390 Btu’s c. 1,304
5 answers
asked by
Chris
8,555 views
A teacher opens a window on a cold day. Which statement explains why the room starts to feel cooler? (1 point)
a. The kinetic
5 answers
asked by
hate school
2,627 views
If the temperature at 7:00 am was - 7 °C and the temperature rose 8°C during morning, what was the temperature by noon?
7 answers
asked by
sunil
1,652 views
The temperature in your town is 31 degrees fahrenheit. The radio announcer says that the temperature will drop 15 degrees. what
52 answers
asked by
#HOMEWORK
9,772 views
A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases,
10 answers
asked by
Nic
5,192 views
1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C?
2. A 300 g piece of aluminum is
7 answers
asked by
Debra
5,797 views
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