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Thermodynamics
Page 5
Questions (11,677)
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
2,213 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
4,193 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
9,316 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
1,315 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
705 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
3,887 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
1,563 views
A glass window with a mass of 20kg is heated to a temperature of 32C by the sun. How much thermal energy is released by the
7 answers
asked by
angelina
1,620 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
3,863 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
4,682 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
2,780 views
Given the thermodynamic data in the table below, calculate the equilibrium constant for the reaction:
2SO2(g)+O2--> 2SO3
4 answers
asked by
Sara
7,447 views
when the temperature of 4 dm3 of an ideal gas is increased from 200K to 400K and the pressure is halved, caculate the volume of
4 answers
asked by
POPPY
2,166 views
Please explain the answer.
Which statement about this reaction is correct? 2Fe(s)+3CO2(g)--->Fe2O3(s)+3CO(g) delta H = 26.6 kJ A.
5 answers
asked by
Anonymous
3,872 views
A certain reaction is spontaneous at 72˚C. if the enthalpy change for the reaction is 19Kj/mol, what is the minimum value of
5 answers
asked by
fatima
3,622 views
A quantity of monatomic ideal gas expands adiabatically from a volume of 2.0 liters to 6.0 liters. If the initial pressure is
4 answers
asked by
Alex
3,337 views
As an ionic solid dissolves in water, the temperature of the solution increases. What best describes the enthalpy and entropy of
4 answers
asked by
Cortney
3,822 views
In a household radiator, 1000 g of steam at 100 C condenses. How much heat is released?
4 answers
asked by
G
3,202 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
2,126 views
how many kilojoules of heat are absorbed when 1.00 L of water is heated from 18C to 85C? density of water is 1.0 g/ml
7 answers
asked by
Skye
3,954 views
Suppose the skin temperature of a naked person is 34°C when the person is standing inside a room whose temperature is 25°C.
4 answers
asked by
papito Urgent help needed
1,979 views
An aluminum block absorbs 1.0 x 104 J of energy from the Sun when its temperature increases by 5.0 °C. What is the mass of the
4 answers
asked by
emily
1,646 views
which is false?
Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done
4 answers
asked by
matt
1,146 views
if a glass of ice water is at equilibrium, what is its temperature?
4 answers
asked by
Anonymous
1,960 views
How much energy does it take to convert 0.800 kg ice at -20.°C to steam at 250.°C?
Specific heat capacities: ice, 2.1 J g-1
4 answers
asked by
Anonymous
2,765 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
2,536 views
I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you!
Okay, so the
4 answers
asked by
Demi
4,815 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
1,668 views
Use the Clausius-Clapeyron equation to calculate the temperature at which pure water would boil at a pressure of 367 torr. The
4 answers
asked by
Gabriella
983 views
An aqueous solution of NaCl freezes at -1.6ºC. At what temperature will it boil? Given that K(b) for water is 0.52 deg m^-1.
4 answers
asked by
steph
1,861 views
It takes 333.51 joules to melt exactly 1 gram of H2O. What is the molar heat of fusion for water, from this data?
4 answers
asked by
me
1,616 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
2,665 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
496 views
(1) MgCO3(s) ⟶ MgO(s) + CO2(g) ΔrH = 118.1 kJ mol−1
(2) Mg(s) + 12O2(g) ⟶ MgO(s) ΔfH =−601.7 kJ mol−1 What is the
5 answers
asked by
jhope
2,073 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
1,154 views
The air in the syringe is at a pressure of 2.0×105Pa. The piston is slowly moved into the
syringe, keeping the temperature
4 answers
asked by
rida
1,784 views
what is the activity of water at 11bar
and 298k
4 answers
asked by
Anonymous
1,958 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
1,566 views
Newton’s law of cooling states that for a cooling substance with initial temperature T0, the temperature T(t) after t minutes
4 answers
asked by
lynn
3,917 views
What mass of ice is needed to cool 60g of water from 43oC to 20oC
4 answers
asked by
sam
1,236 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
857 views
Calculate the rms speed of Br2 molecules at 23 °C and 1.00 atm. What is the rms speed of Br2 at 23 °C and 1.50 atm?
3 answers
asked by
Jimi
2,211 views
when measuring latent heat, why should your final temperture be the minimum temperature reached by the calorimeter?
3 answers
asked by
asasasas
790 views
1. What happens if our calorimeter is not properly insulated..what effect will it have on our calculated specific heat capacity
4 answers
asked by
Precious
3,541 views
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