If you're dealing with gases, some of them could escape the container. Or, if you're dealing with liquids, there could be some outside factors playing in. In general, you need a closed system to observe a reaction accurately.
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Nepal is a multilingual, multiethnic, multicultural and multi-religious nation. Unity in diversity is the defining characteristics of Nepali society. Mutual coexistence, tolerance and cooperation have guided the people in achieving social cohesion, peace and happiness.
Explanation:
Please mark as brainliest!
Answer:
The answers for the questions are in the picture.