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Thermodynamics
Page 10
Questions (11,683)
Which graph might show the temperature during a 24 hour period?
2 answers
asked anonymously
131 views
19. Explain how heat affects the speed of particles and the distances between particles.
2 answers
asked by
tka
85 views
10. Calorimeters are used to measure bond energy by providing
A. an open system, where matter and heat can be exchanged with the
2 answers
asked by
gin
114 views
1. Which of these is an example of an endothermic process or reaction?
A. freezing ice cubes B. boiling water C. light released
2 answers
asked anonymously
78 views
The balanced combustion of methane is shown below.
CH4(g) + O2(g) CO2(g) + H2O(g) ΔH = –890 kJ mol–1 Determine how much
2 answers
asked by
w
110 views
2 eggs cook in a frying pan, which is sitting over a gas burner.
Is thermal energy being transferred from the metal pan to the
2 answers
asked by
Useless
132 views
The internal energy ∆E of a system is -230 kJ. If the system released 300 kJ, How much work was done in the system? Based on
2 answers
asked by
ezile
143 views
How much of heat is needed to warm 500 g of water from 25 °C near to its boiling point of 99°C? The specific heat of capacity
2 answers
asked by
ezile
91 views
Calculate the root mean square velocity of the oxygen gas (O2) molecules at 77 °C. (R =8.314 Kg.m²/S².mol.K). (atomic mass of
2 answers
asked by
ezile
80 views
The table below shows some values for standard enthalpy changes of combustion. Use these values in the table below to calculate
2 answers
asked by
ezile
108 views
The table below shows some values for standard enthalpy changes of combustion. Use these values in the table below to calculate
2 answers
asked by
ezile
113 views
When 15.0 g of sodium nitrate (NaNO3) was dissolved in water in a bomb calorimeter, the temperature reduced from 25.00 °C to
2 answers
asked by
ezile
96 views
When a 7.50 g sample of solid NaOH dissolves in100.00 g of water in a coffee-cup calorimeter, the temperature rises from 21.6°C
2 answers
asked by
ezile
152 views
The pressure of a sample of an inert gas reduced significantly from 100 kPa to 30kPa. The temperature increases from 27degreeC
3 answers
asked by
ezile
137 views
In the combustion of carbon to form methane, the change in enthalpy is -652 kJ
C(g) + 4H(g) rightwards arrowCH4 (g) incrementH =
2 answers
asked by
ezile
107 views
Calculate the change in enthalpy, ΔH in joules (J) for the reaction below carried out at constant pressure of 11.1 atm at a
2 answers
asked by
ezile
83 views
Calculate the enthalpy change for the reaction: P4O6(s)+ 2O2(g) → P4H10(s)
Given the following enthalpies of reaction: P4 (s) +
2 answers
asked by
ezile
121 views
At 85 degrees celsius and 760 torr, what are the amount of substance in the liquid and vapour phase when heptane is equals to
4 answers
asked by
Lakydo Wepson
64 views
When would a cup of hot coffee left on the counter stop transferring heat?
a When it has gained all of the air's thermal energy b
2 answers
asked anonymously
98 views
Thermal energy will always transfer from the ________ object to the _________ object.
a coolest; hottest b solid; liquid c
2 answers
asked anonymously
53 views
what will happen if the annealing temperature is too or too low
2 answers
asked by
student
76 views
A cube of ice is taken from the freezer at -8.5°C and placed in a 15g aluminium calorimeter filled with 310g of water at room
2 answers
asked by
Godfrey
89 views
What is the best description of heat?(1 point)
Responses thermal energy thermal energy the transfer of potential energy from one
1 answer
asked by
Water
90 views
What happens when thermal energy is applied to water?(1 point)
Responses Its molecules gain kinetic energy. Its molecules gain
2 answers
asked by
Water
118 views
Question: A brass measuring is correct at 15 degree Celsius, the volume obtained when the length of an object measured with the
1 answer
asked by
Rukky Okome
87 views
What is the best description of heat?(1 point)
Responses the measure of the average kinetic energy of the particles in an object
1 answer
asked by
danilllllieeeeeeeeeeeeee
184 views
an endothermic and an exothermic process and explain one way to determine why it is classified that way
1 answer
asked anonymously
52 views
Which of these is an example of an endothermic process or reaction?
A. freezing ice cubes B. boiling water C. light released from
1 answer
asked anonymously
61 views
The surface of a heated metal object measures 120°C. It is dropped into a bucket filled with water measuring 10°C.
Which of the
2 answers
asked by
kali
177 views
Just before sunrise, the temperature in degrees Fahrenheit was 13 degrees below zero. By 10 a.m. the temperature had risen 19
2 answers
asked by
camillya
102 views
What will most likely be the effect on the number of coats in the coat check if the temperature decreases? (4 points)
Number of
4 answers
asked by
Joe Mamma
66 views
At what temperature did the water temperature heat up from 10am to 11am
1 answer
asked anonymously
46 views
A 1.30 L balloon is taken from room temperature (25*C) and placed into a freezer at -11.5*C.
What is its new volume?
1 answer
asked by
hi
40 views
A copper ball easily slides through a copper ring when it is cold but after there has been heated it does not fit through the
2 answers
asked by
Maxx
98 views
1.
What happens to the surface of a spaceship in direct sunlight in space? It gets very hot slowly. It gets very hot quickly. It
27 answers
asked by
TX2lover99
73 views
Write and inequality to represent the situation:
The temperature stayed above -15 Fahrenheit
1 answer
asked by
Hope
106 views
In order to measure the transfer of thermal energy from one temperature body to another, what device would be most useful?
a
1 answer
asked by
no name
72 views
there is an increase in temperature, then the _____________. (Select the best response to complete the statement)
a average
1 answer
asked by
no name
94 views
A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25
4 answers
asked by
love
1,645 views
1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam.
ANS = % 2.
6 answers
asked by
Danny
947 views
The rate that an object cools is directly proportional to the difference between its temperature ( in Kelvins) at that time and
4 answers
asked by
Erica
1,268 views
A 10m height cylinder with cross sectional area of 0.1 m2 has a massless piston at the bottom as shown in Figure Q2. Water is at
3 answers
asked by
Hao
767 views
Consider the combustion of propane. Delta H is -2221 kJ. Assume all heat is from combustion of propane. What mass of propane
4 answers
asked by
Victor
12,016 views
how much energy is required to raise temperature of 40 g of water by 20 degrees C? cw = 4.18 x 10 quipped J/ kg .C
2 answers
asked anonymously
66 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
2,724 views
what amount of energy in calories would it take to bring 20 grams of solid ice at negative twelve degrees celsius to liquid
2 answers
asked by
Patience
738 views
Which is the best description of what happens when thermal energy is removed from a substance
its particles gain kinetic energy
3 answers
asked by
I hate science
339 views
1. In a gas kept at a constant temperature, all molecules move with the same speed.
A. True B. False 2. A hot object has more
4 answers
asked by
sophie
2,086 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
7,669 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
4,199 views
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