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Thermodynamics
Page 6
Questions (11,562)
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
Calculate the standard entropy change for the dimerization of NO2: 2NO2(g)→N2O4(g)at 298 K, if
S◦ ∆H◦f J/K·mol �NO2(g)
4 answers
asked by
Gabriella
4,218 views
Can someone check my answer?
What is thermal energy?(1point) A. the measurement of energy in an object due to position,
6 answers
asked by
Jrjdbfh
953 views
for each pair of substances, circle the substance with more thermal energy and explain why? A0 500g of water at 35 degree C VS.
5 answers
asked by
faith
4,824 views
how many kilojoules are required to raise the temperature of a 150. g sample of silver from 25 °C to 135 °C? Silver has a
7 answers
asked by
Emi
5,112 views
A 50.0 mL solution of 1.2 M HCl at 24.1C is mixed with 50.0 mL of 1.3 M NaOH, also at 24.1C, in a coffee-cup calorimeter. After
5 answers
asked by
jesse
4,262 views
A heat pump is proposed that uses 50 degree F ground water to heat a house to 70 Degree F. The groundwater experiences a
4 answers
asked by
chris
2,020 views
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 kJ/mol*K and that the heat
5 answers
asked by
i'm stuck
3,469 views
What is the specific volume of a gas at 180psia & 90°F when its density is 0.0892 lb/cu ft at 14.7psia & 32°F. Calculate its
4 answers
asked by
Janus
2,040 views
If the pressure on the surface of water in the liquid state is 30 kpa, the water will boil at... 0, 30, 70, or 100 degrees c?
5 answers
asked by
lost
3,733 views
Which of the following conditions is always true at equilibrium? deltaG=0, Q=1, K=1, deltaG=deltaG(standard),
7 answers
asked by
Student
9,892 views
A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 90°F. What is its coefficient of
5 answers
asked by
Jesse
4,874 views
The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal
10 answers
asked by
matt
11,281 views
consider the following reaction at 298K
4Al(s)+3O2(g) yields 2Al2O3(s) delta H= -3351.4 Kj find delta S sys find delta S surr
6 answers
asked by
Jake
9,999 views
A sample of 1.00 mol H2O(g) is condensed isothermally and reversibly to liquid water at 100°C. The standard enthalpy of
5 answers
asked by
chemstudent
8,070 views
Under standard conditions (298 K and 1 atm), which statement is true?
a] diamond converts to graphite spontaneously b] graphite
6 answers
asked by
Katherine
12,795 views
The fluorocarbon compound C2Cl3F3 has a normal boiling point of 47.6 ∘C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are
5 answers
asked by
Tori
15,895 views
A gas absorbs 45 kJ of heat and does 29 kJ of work. Calculate the change in energy.
The answer is 16 kJ, but I don't understand
6 answers
asked by
Jake
7,817 views
3.) A 5.00 x 10^2 g block of metal absorbs 5016 joules of heat when its temperature changed from 20 degrees C to 30 degrees C.
5 answers
asked by
mhaidar9108
6,578 views
175g of water was heated fro 15 to 88 degrees C. how many kilocalories were absorbed by the water?
I got 94.5 kcal. Is this
5 answers
asked by
Jason
10,525 views
Approximately how many joules of heat are needed to raise the temperature of a 4.0-gram sample of water to 8.0C?
that is all of
5 answers
asked by
Caroline
6,257 views
The heat of solution of potassium acetate (KC2H3O2) in water is -15.3 kJ/mol.
If 18.8 g of KC2H3O2(s) is dissolved in 655 mL of
5 answers
asked by
Fiona
4,419 views
A cylinder within a piston expands from a volume of 1.00 L to a volume of 5.50 L against an external pressure of 4.50 atm.
Part A
5 answers
asked by
lea
1,398 views
The pressure and volume of an ideal monatomic gas change from A to B to C. From A to B, volume remains 0.400 and pressure rises
4 answers
asked by
Coffee
2,137 views
Calculate the linear expansivity of a brass of length 120m that assume a new length of 120.05m when heated through a temperature
12 answers
asked by
Living stone model college
4,338 views
When 0.250 mol of CH4(g) reacts with excess Cl2(g) at constant pressure according to the chemical equation shown below, 177 kJ
9 answers
asked by
Daqa
7,660 views
When one mole of C6H6 is burned, 3.27 MJ of heat is produced. When the heat from burning 7.47 g of C6H6 is added to 5.69 kg of
5 answers
asked by
Destany
5,318 views
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the
11 answers
asked by
jessie
3,430 views
Water with a mass of 0.500 kg at 15.0 degree C is mixed with 0.800 kg of water at 35.0 degree C. What is the final temperature
5 answers
asked by
christy
4,232 views
a chemical engineer placed 1.520 g of a hydorcarbon in the bomb of a calorimeter. The bomb was immersed in 2.550 L of water and
5 answers
asked by
Tori
5,209 views
The ?H of the reaction below is -575.13 kJ. Is this reaction spontaneous?
2ZnS + 3O2 + C ? 2SO2 + 2Zn + CO2 A. It is not because
5 answers
asked by
Morgan
1,946 views
The specific heat capacity (cp) of lead is 0.13 J/g °C. How much heat (in J) is required to raise the temperature of 15 grams
5 answers
asked by
GRACE
7,349 views
how much energy is required to change 40 g of ice at -10 C to steam at 110 C?
5 answers
asked by
Sam
6,646 views
If 35.0 g H2O at 22.7 °C is combined with 65.0 g H2O at 87.5 °C, what is the final temperature of the mixture? The specific
5 answers
asked by
gsdgsd
3,664 views
For the reaction below, the thermodynamic equilibrium constant is K = 2.30×10−4 at 25 °C.
NH4CO2NH2(s) ⟶ 2 NH3(g) + CO2(g)
5 answers
asked by
kevin
1,324 views
What pressure (in atmospheres) will be exerted by 1.3 moles of gas in a 13 litre flask at 22 degrees Celcius? (Gas constant (R)
4 answers
asked by
Anonymous
3,204 views
If 309 J of heat are removed from 10.0 g of ice (specific heat = 2.06 J/g
ºC) at -5.5 ºC, what is the final temperature of the
5 answers
asked by
S
1,508 views
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat
4 answers
asked by
ODU
6,054 views
1. A 500.0 g metal block absorbs 1.125 × 104 J of heat to raise its temperature by 50.0 K. What is the substance?
5 answers
asked by
Pat
3,003 views
A thimbleful of water at 100 deg C has a higher temp than a swimming pool full of water at 20 deg C, but the pool has more
4 answers
asked by
lala
2,539 views
Calculate DeltaS0 for the formation of 1 mol of HI(g) from its elements given the following information:
S0[H2(g)] = 131
5 answers
asked by
Taylor
4,025 views
What is the approximate ΔH in kJ for the following reaction as written:
2NH3(g) --> 3H2(g) + N2(g) Careful, what kind of bond
5 answers
asked by
Anonymous
1,587 views
How many Joules are needed to melt 1 gram of 0 deg C ice and turn it to water at room temperature of 23 deg C?
5 answers
asked by
Parvati
1,915 views
In each cycle of its operation, a heat engine expels 2400 J of energy and performs 1800 J of mechanical work.
(a) How much
4 answers
asked by
Theaaaa03
3,540 views
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
1,297 views
what should be the resistance of a heating coil which will be used to raise the temperature of 500 grams of water from 28
5 answers
asked by
Anonymous
1,782 views
Calculate the final centigrade temperature required to change 20 litres of gas at 120°C and 1 atmosphere to 25 litres at 2
9 answers
asked by
Busola
3,059 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
3,871 views
At standard temperature, a gas has a volume of 275mL. The temperature is then increased to 130. Celcius, and the pressure is
9 answers
asked by
Chopsticks
4,646 views
Given the thermochemical equation SO2(g) + ½ O2(g) ---> SO3 (g) DH = -99.1 kJ
calculate the enthalpy change (DH) when 89.6 g of
6 answers
asked by
noshi
2,378 views
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