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kaheart [24]
3 years ago
6

Which of these is an example of a chemical reaction that occurs at a very fast rate?

Chemistry
2 answers:
Aloiza [94]3 years ago
7 0
I believe the answer is an explosion
Sonbull [250]3 years ago
7 0

Answer: Option (c) is the correct answer.

Explanation:

A reaction which is able to occur in fraction of seconds or which is able to occur at an instant rate of time means that reaction is at a very fast rate.

Rusting of iron is not an immediate process as it occurs due to the humidity  present within the air an oxide layer develops on the surface of iron. This layer formation does not occur in an instant.

Photosynthesis is a process of formation of food by  the plants for themselves in the presence of air, sunlight, carbon dioxide and water.

Rotting wood also takes time and may occur over a period of month or more.

An explosion is an instantaneous process as it occurs within a fraction of seconds.

Thus, we can conclude that out of the given options an explosion is an example of a chemical reaction that occurs at a very fast rate.

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Predict: In each "Climate type" box, Highlight the condition you think will lead to the fastest weathering for the given weather
yanalaym [24]

Answer:

Frost Wedging - Hot and dry

Clay Formation - Cold and Wet

Dissolving - Cold, and dry

Explanation:

The frost wedging happen when the climatic condition is hot and dry. The dry weather compensates the heat and the rock wedging happens quickly. For clay formation the weather has to be cold and wet. The cold weather will make the sand indulge with rock particles resulting in the clay formation.

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Write the symbol for every chemical element that has atomic number greater than 55 and less than 140.8 u
patriot [66]
Answer on the picture

8 0
3 years ago
Helpppp pleaseee ill give brainliest
Studentka2010 [4]

Answer:

The answers are in the explanation.

Explanation:

The energy required to convert 10g of ice at -10°C to water vapor at 120°C is obtained per stages as follows:

Increasing temperature of ice from -10°C - 0°C:

Q = S*ΔT*m

Q is energy, S specific heat of ice = 2.06J/g°C, ΔT is change in temperature = 0°C - -10°C = 10°C and m is mass of ice = 10g

Q = 2.06J/g°C*10°C*10g

Q = 206J

Change from solid to liquid:

The heat of fusion of water is 333.55J/g. That means 1g of ice requires 333.55J to be converted in liquid. 10g requires:

Q = 333.55J/g*10g

Q = 3335.5J

Increasing temperature of liquid water from 0°C - 100°C:

Q = S*ΔT*m

Q is energy, S specific heat of ice = 4.18J/g°C, ΔT is change in temperature = 100°C - 0°C = 100°C and m is mass of water = 10g

Q = 4.18J/g°C*100°C*10g

Q = 4180J

Change from liquid to gas:

The heat of vaporization of water is 2260J/g. That means 1g of liquid water requires 2260J to be converted in gas. 10g requires:

Q = 2260J/g*10g

Q = 22600J

Increasing temperature of gas water from 100°C - 120°C:

Q = S*ΔT*m

Q is energy, S specific heat of gaseous water = 1.87J/g°C, ΔT is change in temperature = 20°C and m is mass of water = 10g

Q = 1.87J/g°C*20°C*10g

Q = 374J

Total Energy:

206J + 3335.5 J + 4180J + 22600J + 374J =

30695.5J =

30.7kJ

5 0
3 years ago
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