The process of flask becoming cold is due to endothermic reaction.
Answer: Option B
<u>Explanation:</u>
So two kinds of heat transfer can be possible in any chemical reaction. If the sample is considered as system and the sample container is considered as the surrounding, then heat transfer can occur between them.
If the heat is transferred from the surrounding to the system , then it is an endothermic reaction. And in those cases, the sample holder will be becoming colder. This is because the heat from the surrounding that is the container will be utilized to complete the reaction.
While when there is transfer of heat from the system to surrounding , it will be exothermic reaction and the beaker will be getting hot in this process. So in the present case, the container is becoming cold because of occurrence of endothermic process.
Answer: MR²
is the the moment of inertia of a hoop of radius R and mass M with respect to an axis perpendicular to the hoop and passing through its center
Explanation:
Since in the hoop , all mass elements are situated at the same distance from the centre , the following expression for the moment of inertia can be written as follows.
I = ∫ r² dm
= R²∫ dm
MR²
where M is total mass and R is radius of the hoop .
Identifying the word that is described by each statements in the question is listed below:
- Evaporation
- Transpiration
- Hydrosphere
- Water Cycle
- Condensation
<h3>Meaning of Water </h3>
Water can be simply defined as any fluid or substance that is odurless, colorless and tasteless.
Water is a very important factor and substance that sustains life in humans and plants on earth.
Water tends to undergo different changes and processes in plant, animals and even as a substance on its own
In conclusion the above listed processes are all related to water.
Learn more about Water: brainly.com/question/1313076
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