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Thermodynamics
Page 4
Questions (11,685)
The temperature at midnight on a cold winter night is -2 degree Celsius 12 hours later the temperature increase by 9 degree
4 answers
asked by
Suryanshu Kumar Jena
1,525 views
Calculate the energy absorbed when 8.5g of ice is melted at 0 Celsius.
thank you
4 answers
asked by
happy
2,529 views
the molar heat of vaporization for water is 40.79 kJ/mol. How would you express this heat of vaporization in joules per gram.
5 answers
asked by
Sienna
3,043 views
Which is the best example of a thermal conductor?(1 point)
Responses plastic ice-cube tray copper plating on bottom of a skillet
5 answers
asked by
HAELP
644 views
If a gas in a closed container is pressurized from 12 atm to 25 atm and tis original temperature was 32 degrees C, what would
4 answers
asked by
Anonymous
1,352 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
2,046 views
At midnight, the temperature was -5°C. By noon, the temperature rose by 10°C. What was the temperature at noon?
5 answers
asked by
precy
1,766 views
At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a
4 answers
asked by
christ
915 views
Which one of the following reactions would you expect to have highest ΔS°?
Answer A. C2H2(g) + 5/2O2(g) → 2CO2(g) + H2O(g) B.
4 answers
asked by
Anonymous
7,217 views
a balloon with a volume of 1.375 L is released from earths surface at sea level. what will the balloon occuy at an altitude of
7 answers
asked by
amie
1,849 views
How many joules of heat are required to melt 60.5g of ice at 0 degrees C?
4 answers
asked by
Maci
1,275 views
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the
5 answers
asked by
Katherine
17,275 views
Calculate the work done in joules when 1.0 mole of water vaporizes at 1.0 atm and 100C. Assume that the volume of liquid water
5 answers
asked by
Monty
12,417 views
Complete the table relating the values of Δ𝐺∘ and 𝐾 .
Δ𝐺∘ K <0 =0 >0 K can be =1, <1, or >1
4 answers
asked by
Anonymous
11,906 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
4,889 views
Calculate ΔSfus and ΔSvap for HF.
Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I
6 answers
asked by
Srah
20,679 views
Calculate Delte G Knot for H20(g) + 1/2 O2 <-> H2O2(g) at 600. K, using the following data:
H2(g) + O2(g) <-> H2O2 (g) K = 2.3 X
5 answers
asked by
Summer
5,749 views
if some of water in calorimeter splash out when tranfering the metal block, will it affect the experiment result?
5 answers
asked by
jane
4,670 views
If 3000ft/3 of air crossing an evaporator coil and is cooled from 75F to 55F, what would be the volume of air,in ft/3, exiting
4 answers
asked by
Robert
7,070 views
A heat engine operating between 100 degree celcius and 700 degree celcius has an efficiency equal to 40% of the maximum
11 answers
asked by
MZAOEM
2,768 views
What is the entropy change associated with the chemical reaction that occurs when iron oxide is converted to its metal form?
Fe2O
7 answers
asked by
Morgan
3,535 views
A 2.00-kg block of ice is at STP (0¢XC, 1 atm) while it melts completely to water. What is its change in entropy? (For ice, Lf
7 answers
asked by
Shawn
2,831 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
5,327 views
Five kilograms of water at 40◦C is poured on a large block of ice at 0◦C. How much(in Kg) ice melts ?
Hf = 335 kJ/kg cw =
5 answers
asked by
hjjj
4,343 views
What is ΔH in the equation ΔG = ΔH - TΔS?
A. The change in specific heat between the products and the reactants B. The change
6 answers
asked by
Morgan
3,762 views
a considerable amount of heat is required for the decomposition of aluminum oxide.
2Al2O3-> 4Al(s)+ 3O2(g) change in heat= 3352KJ
5 answers
asked by
Skye
6,206 views
A balloonist is preparing to make a trip in a helium-filled balloon. The trip begins in early morning at a temperature of 15
5 answers
asked by
Amber
1,759 views
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the
4 answers
asked by
Lance
4,469 views
You wish to know the enthalpy change for the formation of liquid PCl3 from the elements shown below.
P4(s) + 6 Cl2(g)--> 4
4 answers
asked by
Kat
5,918 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
3,673 views
1. A 0.400 kg sample of aluminum (c = 9.20 x 102 J/kg°C) at 95.0 °C is dropped into a 0.550 kg pot of water which is at 18.0
5 answers
asked by
anonymous
2,684 views
A mass 20.0g of petrol was burnt in air. The heat produced was used to heat 2.5 litres of water. Given that the heat value of
5 answers
asked by
mary
1,180 views
The figure shows a cube of air at pressure 1.0 atm above a hot surface on Earth. Contact with the hot surface causes the volume
5 answers
asked by
Morgan
3,099 views
The standard enthalpy of combustion of C2H6O(l) is -1,367 kJ mol-1 at 298 K. What is the standard enthalpy of formation of
4 answers
asked by
abby
4,402 views
2H2+O2 -> 2H20 changeHrxn=-484 KJ
Which answer best describes the transfer heat that occurs when 1.30 mol of H2 reacts? 629 KJ
5 answers
asked by
Anonymous
18,492 views
Determine the specific heat of iron if 6.1 J of energy are needed to warm 1.50 g of iron from 20 degrees C to 29 degrees C
5 answers
asked by
Anonymous
2,214 views
A cylinder with a movable piston contains gas at a temperature of 27 degrees celsius, a volume of 1.50 meters cubed, and an
7 answers
asked by
Clay
4,198 views
What energy in kJ is required to break 4.24 mol of NH3 into atoms? As noted below, this information can be used to calculate ΔH
5 answers
asked by
Anonymous
1,252 views
A gas at 65 degrees Celsius occupies 4.22L. At what Celsius temperature will the volume 3.87L, assuming the same pressure?
-kay
7 answers
asked by
kLb
9,317 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
1,317 views
How much ice (in grams) would have to melt to lower the temperature of 355mL of water from 26∘C to 6∘C? (Assume the density
5 answers
asked by
Anonymous
6,951 views
Iron has a heat capacity of 0.45 J/g/◦C. If a
100 g sample of iron at an initial temperature of 50◦C absorbs 400 J of energy,
4 answers
asked by
Sammy
706 views
Calculate the molar entropy of vaporization for liquid hydrogen iodide at its boiling point -34.55 degrees celcius. HI(l) <=>
5 answers
asked by
Amy
1,860 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
2,388 views
Calculate the enthalpy change for the reactions
NO(g) + O(g) → NO2(g) from the following data: NO(g) + O3(g) → NO2(g) + O2(g)
6 answers
asked by
Chris
8,589 views
'Identify two factors that affect the change in entropy that occurs during the formation of an NaCl solution. State whether each
4 answers
asked by
SarahF275
1,564 views
use standard enthalpies of formation to calculate delta Hrxn for the following reaction. 2H2S(g)+3O2(g)-->2H2O(l)+2SO2(g)
4 answers
asked by
jen
3,864 views
The standard heat of combustion of eicosane, C20H42 (s), a typical component of candle wax, is -1.332 x 104 kJ/mol (consider
5 answers
asked by
Anonymous
4,683 views
What mass of ice at 0°C can be melted by the addition of 1670 joules of heat?
When the temperature is decreased on the following
5 answers
asked by
skye
2,953 views
2 H2S (g) + SO2 (g) <===> ƒnƒn3 S (s) + 2 H2O (g)
1) At 298 K, the standard enthalpy change, H¢X, for the reaction represented
4 answers
asked by
JJ
2,783 views
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