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GenaCL600 [577]
3 years ago
12

How is the kinetic energy of the particles that make up a substance different after is changes state

Chemistry
1 answer:
pav-90 [236]3 years ago
7 0
As an example, the kinetic energy of water increases as it goes from a solid to a gas. This is because the increase in the temperature of the water causes the particles of the water to move faster and faster. The kinetic energy of the water decreases as it goes from a gas to a solid. The decrease in temperature causes the particles of the water to slow down.
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What is the volume of an alka seltzer tablet
Delicious77 [7]

Answer:

Explanation:

Alka Seltzer tablet contains 325 mg of aspirin (acetylsalicylic acid), 1000 mg of citric acid, and 1916 mg of sodium bicarbonate. The acids originally contained in a tablet give only 17.4 mmol of H+, which is not enough to neutralize all of the sodium bicar- bonate (22.8 mmol).

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3 years ago
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__is a term that refers to the amount of space that a substance or an object takes up
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Volume perhaps ?

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The refrigerator has no room to cool the meat you've just cooked you should
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3 years ago
Which sentences describe decomposers in a food chain?
Elan Coil [88]

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hey are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic mattet.

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5 0
3 years ago
A 1.800-g sample of solid phenol (C6H5OH(s)) was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/?C. The temp
vichka [17]

Answer:

The balanced chemical equation:

C_6H_5OH(s)+7O_2(g)\rightarrow 6CO_2(g)+3H_2O(g)

Heat of combustion per gram of phenol is 32.454 kJ/g

Heat of combustion per gram of phenol is 3,050 kJ/mol

Explanation:

C_6H_5OH(s)+7O_2(g)\rightarrow 6CO_2(g)+3H_2O(g)

Heat capacity of calorimeter = C = 11.66 kJ/°C

Initial temperature of the calorimeter = T_1= 21.36^oC

Final temperature of the calorimeter = T_2= 26.37^oC

Heat absorbed by calorimeter = Q

Q=C\times \Delta T

Heat released during reaction = Q'

Q' = -Q ( law of conservation of energy)

Energy released on combustion of 1.800 grams of phenol = Q' = -(58.4166 kJ)

Heat of combustion per gram of phenol:

\frac{Q'}{1.800 g}=\frac{-58.4166 kJ}{1.800 g}=32.454 kJ/g

Molar mass of phenol = 94 g/mol

Heat of combustion per gram of phenol:

\frac{Q'}{\frac{1.800 g}{94 g/mol}}=\frac{-58.4166 kJ\times 94 g/mol}{1.800 g}=3,050 kJ/mol

3 0
3 years ago
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