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Thermodynamics
Page 7
Questions (11,651)
What mass of ice is needed to cool 60g of water from 43oC to 20oC
4 answers
asked by
sam
1,229 views
A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118
4 answers
asked by
Layn
1,819 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
852 views
A gas storage tank has a volume of 3.5*10^5 m^3 when the temperature is 27 degrees celcius and the pressure is 101 kPa. What is
4 answers
asked by
Alexandra
2,007 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
2,206 views
when measuring latent heat, why should your final temperture be the minimum temperature reached by the calorimeter?
3 answers
asked by
asasasas
788 views
calculate the final temperature of a 400g of water at 80 degree celsius if it is poured into a 100g pot at 30 degree celsius.
4 answers
asked by
Kaye
2,268 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
3,537 views
The sun radiates like a perfect blackbody with an emissivity of exactly 1.
(a) Calculate the surface temperature(K) of the sun,
3 answers
asked by
Alice
4,321 views
A two-liter pot of tea at 85°C has _____ than a one-liter pot of tea at 85°C.
more thermal energy more heat faster-moving
3 answers
asked by
me
356 views
Convert the following to Kelvin temperature
a)148°c (b) _132°c ( c) 27°c
4 answers
asked by
Blessing
757 views
A Styrofoam bucket of negligible mass contains 1.75 kg of water and 0.450 kg of ice. More ice, from a refrigerator at -15.0
3 answers
asked by
Marthin
1,215 views
If 18oo cal:of heat is added to a system while system does work equivalent to 2800 cal:by expanding against its surroundings.
4 answers
asked by
ABC
871 views
1.10 g of glucose was completely burnt in a copper calorimeter. The temperature of the water
increased from 25.85 °C to 36.50
4 answers
asked by
Khairavi
2,402 views
The heat of combustion of benzene, C6H6, is -41.74 kJ/g. Combustion of 3.65 of benzene causes a temperature rise of 4.41 C^o in
4 answers
asked by
Bobby
3,776 views
Calculate the heat in kilojoules needed to vaporize 8.00kg of water at 100∘C.
3 answers
asked by
Jacqueline
1,747 views
A cylinder contains a gas with the pressure of 125kpa at a temp. of 200k. What is the temp. of the gas at a pressure of 100kpa?
4 answers
asked by
Mina
1,199 views
a piece of metal of mass 50g heated to 100°c is dropped into 200g of water of 14°c in copper calorimeter weighing 80g and
3 answers
asked by
blessyn
659 views
20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear
3 answers
asked by
shirly
1,454 views
A 1.0-m thin rod of aluminum is laid end-to-end with a 1.0-m thin rod of steel. The rods
are initially at 25 oC. What is the
3 answers
asked by
catherine
742 views
A steel wire, 150 m long at 10°C, has a coefficient of linear expansion of 11 ´ 10-6/C°. Give its change in length as the
4 answers
asked by
Jesse
3,213 views
How much energy is released to the environment by 50.0 grams of condensing water vapor? Hv = 40.7 kJ/mol
4 answers
asked by
Diego
424 views
The temperature of piece of copper of mass 250g is raised to 100% and is then transferred to well lagged aluminum can mass 10g
4 answers
asked by
HUDSON
1,186 views
Calculate the standard entropy change for the reaction of calcium oxide with water to form calcium hydroxide: CaO(s) + H2O(ℓ)
3 answers
asked by
Anonymous
1,810 views
A piece of metal weighing 5.10g at a temperature of 48.6 degree Celsius was placed in a calorimeter in 20.00 mL of water at 22.1
3 answers
asked by
Mai
2,813 views
In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long,
3 answers
asked by
Eric
2,267 views
How much heat must be removed from a 200 g block of copper to lower its temperature from 302 oF to 68
oF? Specific heat of
3 answers
asked by
John
781 views
How can I tell from a graph of temperature vs. time if a reaction is endothermic or exothermic?
3 answers
asked by
Christina
1,143 views
What are the steps to solve this problem? "The enthalpies of combustion of glucose and ethanol are -2813kj/mol and -1369kj/mol,
3 answers
asked by
Julie
1,037 views
how many Kj of heat are evolved when 6g of pure carbon is completely burned? how many grams of carbon must be burned to furnish
3 answers
asked by
Shabana
1,331 views
Given the enthalpies of formation for the following substances, determine ƒ´Hrxn for
Cl2(g) + C2H2Cl2(g) „_ C2H2Cl4(g)
3 answers
asked by
Stephen
676 views
the temperature of the sun at its center is about 2.7x10^7 degrees fahrenheit what is this temperature written in decimal
25 answers
asked anonymously
367 views
A solid object at 30°C is placed inside a container of liquid at 60°C.
What most likely will be observed? a The temperature of
3 answers
asked by
dv
121 views
1. Which of the following explains why the bomb calorimeter exemplifies the First Law of Thermodynamics.
a. It requires the slow
3 answers
asked by
Tej
1,326 views
A glass bottle full of mercury has 500g on being heated through 35 degree, 2.43g of mercury are expelled. calculate the mass of
3 answers
asked by
christiana
558 views
The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT/dt = -k(T - A), where T is the temperature of
5 answers
asked by
Erika
5,340 views
How much heat is required to raise the temperature of 25g of aluminum from 25.0 C to 100 C?
Convert this value to joules?
3 answers
asked by
Santiago
1,530 views
A cylinder contains one liter of air at room temperature (300 K) and atmospheric pressure (10^5 N/m^2). At one end of the
2 answers
asked by
Jane
1,310 views
Work it out. How many joules of heat is given out when pieces of iron of mass 50g and specific heat capacity =460kgk cools from
6 answers
asked by
Peter
746 views
Octane has a vapor pressure of 40 torr at 45.1 degrees Celsius and 400 torr at 104 degrees Celsius. What is its heat of
3 answers
asked by
Dayton
1,022 views
Some Carnot engine has an efficiency 0.700. The hot reservoir temperature is 900K. This means that the temperature of the cold
4 answers
asked by
Daniel
956 views
Which statement correctly describes the relationship between thermal energy and particle movement?
As thermal energy increases,
3 answers
asked by
trippie
153 views
The heat of vaporization of liquid water at 373 K is 40.7 kJ/mol. The value of the enthalpy change when 2.00 g of steam
3 answers
asked by
Anonymous
2,494 views
(a)Is the reaction exothermic or endothermic? Justify your answer using the data provided.
(b) A student makes the following
3 answers
asked by
-
45 views
In 1 to 2 sentences when thermal energy is applied to ice the ices tempature rises until 0 c and then stays the same for a
4 answers
asked by
Hi
361 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
2,553 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
1,216 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
591 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
360 views
In an experiment, 23.0 g of ice at –25°C is converted into steam with a temperature of 124°C. How much heat is required for
2 answers
asked by
Stephen
604 views
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