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ikadub [295]
3 years ago
10

Calculate the entropy change in the surroundings associated with this reaction occurring at 25∘C. Express the entropy change to

three significant figures and include the appropriate units.
Chemistry
1 answer:
zhuklara [117]3 years ago
8 0

Answer:

That means that if you are calculating entropy change, you must multiply the enthalpy change value by 1000. So if, say, you have an enthalpy change of -92.2 kJ mol-1, the value you must put into the equation is -92200 J mol-1

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Specific Heat of Water = 4.186
yarga [219]

Answer:

Q = 2260.44 j

Explanation:

Given data:

Mass of ice = 18 g

Initial temperature = -10 °C

Final temperature = 20°C

Heat absorbed by ice  = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = Final temperature - initial temperature

ΔT = 20°C - (-10°C)

ΔT =  30°C

Specific heat of water = 2.00 j/g.°C

Q = 18 g × 4.186 j/g.°C × 30°C

Q = 2260.44 j

4 0
4 years ago
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A box has a length of 45 centimeters, a width of 7 centimeters, and a height of 15 centimeters. What is the volume? A sample of
andreev551 [17]

Answer:

Hey there!

The volume of the box would be 45(7)(15), or 4725 cm^3.

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Let me know if this helps :)

8 0
3 years ago
Explain why cis−1−chloro−2−methylcyclohexane undergoes E2 elimination much faster than its trans isomer.
ANEK [815]
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4 years ago
How many sulfur atoms are in H2SO4?
NemiM [27]

Answer: 1

Explanation:

6 0
3 years ago
In the United States, the average person receives the largest dose of radiation from what source?
rodikova [14]

According to the report of US Environmental Protection Agency, majority of large dose radiation exposure comes from natural background radiation sources particularly the radioactive gases radon and thoron. This two gases form when naturally occurring elements decay. However in the case of man-made sources, the largest dose comes from medical x-rays. 

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3 years ago
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