Answer:
The correct answer based on the criterion of whether the temperature increases or decreases.
Explanation:
If the ambient temperature increases when a reaction takes place, we can deduce that it is an exothermic reaction, since in this type of reaction the system gives heat to the environment, increasing the temperature.
On the other hand, if the ambient temperature decreases, we can deduce that we are in front of an endothermic reaction, since in this type of reaction the system absorbs heat from the environment so the temperature decreases.
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Answer: 0.1 meters
Explanation: move ten down a place value and u get .10 which is equal to 0.1 meters
Answer : The correct statement is:
The density of each piece is the same as that of the original block.
Explanation :
Intensive property : It is defined as a property of substance which does not change as the amount of substance changes.
Examples: Temperature, refractive index, density, hardness, etc.
According to question, if Ana has a block made of pure gold and she cuts this block into two equal pieces then the density of each piece is the same as that of the original block because density is an intensive property that does not changes until and unless material is changed.
That means density remains same as that of the original piece.
Hence, the correct statement is the density of each piece is the same as that of the original block.