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Thermodynamics
Page 9
Questions (11,562)
(a)Is the reaction exothermic or endothermic? Justify your answer using the data provided.
(b) A student makes the following
3 answers
asked by
-
43 views
Consider the decomposition of a metal oxide to its elements, where M represents a generic metal.
M203(s)---> 2M(s) + 3/2 O2(g)
10 answers
asked by
Kelsey
13,130 views
Constant-volume calorimeters are sometimes calibrated by running a combustion reaction of known ΔE and measuring the change in
4 answers
asked by
Kales
2,547 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
1,210 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
587 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
356 views
I think I'm doing this wrong
In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 degrees
2 answers
asked by
AP Physics B (chemistry bit)
1,290 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
813 views
for the evaporation of water during perspiration on a hot dry day
1.delta H is greater than zero and Tdelta S is equal to Delta H
1 answer
asked by
ok
936 views
In which case would the kinetic energy of particles be increasing? (1 point) Responses Metal is melted at 1,300°C. Metal is
1 answer
asked by
Kaesawn Johnson
126 views
If I contain 3 moles of gas in a container with a volume of 60 liters and at temperature of 400 K, what is the pressure inside
3 answers
asked by
kara
2,604 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
2,274 views
The equations for the heats of the formation of copper (I) oxide,Cu2O and copper(II) oxide,CuO are:
2Cu(s) +1/2 O2(g) CuO(s);
2 answers
asked by
felix
2,066 views
17 liters of a gas is at an initial temperature of 67 degrees C and a pressure of 88.89 atm, what will be the pressure of the
3 answers
asked by
Anonymous
1,648 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
1,446 views
Consider a beaker of water that has an initial temperature of 25 degree centigrade. when an ionic salt is dissolved in the
4 answers
asked by
Nene09
1,319 views
how many liters of CH4 measured at 23.4C and 768mmhg must be burned to provide the heat needed to vaporize 3.78L of water at
2 answers
asked by
lennie
897 views
A density glass bottle contains 44.25g of a liquid at 0(c) and 42.02 at 50(c). Calculate the real cubic expansivity of the
4 answers
asked by
Psychokiller
869 views
Use the table of temperatures from several areas to complete the statemen
Area Temperature (°C) x 22 y 18 z 18 Air will move
1 answer
asked anonymously
71 views
Explain why the potential energy increases when ice starts to melt and becomes liquid water
1 answer
asked anonymously
45 views
The transfer of heat energy by the circulation of warm air is called
A thermal convection. B thermal conduction. C cyclonic
1 answer
asked anonymously
106 views
What does temperature measure?(1 point)
Responses average kinetic energy of the particles in an object or substance average
1 answer
asked anonymously
67 views
Match the description to the best response.(5 points) Put responses in the correct input to answer the question. Select a
1 answer
asked by
lol
73 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
41 views
Click on the "Explore" at the bottom of the simulation. Add 2 pumps (100 particles) and click on width at the top. Start
1 answer
asked anonymously
46 views
Analyze the relationship between the dependent and independent variables in the table, showing the temperature of liquid in a
1 answer
asked by
School
60 views
How does a heater in one corner of a fish aquarium warm the whole aquarium?(1 point) Responses The heater warms the glass of the
11 answers
asked anonymously
51 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
46 views
What would happen to a substance at the theoretical temperature of 0 K?(1 point)
Responses The substance’s particles would
1 answer
asked anonymously
36 views
What would happen to a substance at the theoretical temperature of 0 K?(1 point)
Responses The substance would turn from liquid
1 answer
asked anonymously
43 views
Who's the table to answer the question number of cups of lemonade sold versus the temperature of the day Jeremiah had a lemonade
1 answer
asked anonymously
154 views
Which of these statements are true? Select all that apply. Heat flows from high temperature to low temperature. Heat flows from
1 answer
asked anonymously
14 views
At 32°C and 205 kpa gauge. The specific weight of a certain gas was 13.7 N/m³. Determine the gas constant of this gas.
7 answers
asked by
Aaron
6,200 views
the temperature 273.15 K is equivalent to:
6 answers
asked anonymously
96 views
an unknown substance with mass of 1.2 kg loses 32 kJ of thermal energy. which causes the temperature to drop from 364.0 k to
2 answers
asked anonymously
129 views
When a solution containing 8.00 g NaOH in 50.0 g of water at 25 °C is added to a solution of 8.00 g of HCl in 250.0 g of water
5 answers
asked by
Karla
4,109 views
The temperature 273.15k is equivalent too.
2 answers
asked anonymously
47 views
The red supergiant Betelgeuse has a surface temperature of 3600 K.
a) Using the fact that the Sun's surface temperature is about
5 answers
asked by
Tsambikos
3,773 views
an unknown substance with mass of 1.2kg loses 32 kJ of thermal energy. which causes the temperature to drop from 364.0 k to
2 answers
asked anonymously
132 views
A gas has a volume of 4.25 m3 at a temperature of 95.0°C and a pressure of 1.05 atm. What temperature will the gas have at a
4 answers
asked by
Science
2,405 views
A reaction is always non-spontaneous when
a. ∆H>0, ∆S>0 b. ∆H>0, ∆S<0 c. ∆H<0, ∆S<0 d. ∆H<0, ∆S>0 Gibb's Free
3 answers
asked by
cherry
1,015 views
an ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure.
7 answers
asked by
kate
2,254 views
Which of the following four processes are accompanied by an increase in entropy?
1. I2 (s) -> I2 (g) 2. 2 I (g) -> I2 (g) 3. 2
5 answers
asked by
Hannah
2,021 views
A substance is dissolved in water, and the temperature of the surroundings decreases. Is this process exothermic or endothermic?
3 answers
asked by
connexus
453 views
How many kJ of heat are released when 15.75 g of Ba reacts completely with oxygen to form BaO?
The enthalpy for the reaction
5 answers
asked by
Alizar Rodriguez
3,137 views
a sample of methane gas of mass 25g at 250k and 18.8atm expands isothermally until its pressure is 2.5atm. calculate the change
4 answers
asked by
sam
1,068 views
Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. A 250 mL sealed flask contains
6 answers
asked by
I NEED HELP!
3,736 views
Calculate the total energy required to evaporate completely 1kg of ice that is initially -10°c
2 answers
asked by
Iloti favour
165 views
The equation of ∆Tf and ∆Tb
2 answers
asked anonymously
84 views
Inspector Watkins is called to a murder scene. The body was found stuffed in a freezer where the temperature was 10F. The
2 answers
asked anonymously
168 views
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