Shubham Jha - Class 11 & 12
Law of conservation of mass given by
Anonymous Quiz
Lavoisier
Landolt
Antoine
Joseph proust
𓆩𓆪 ❥ ̶͢ ̶ͨ ̶ͧ ̶ͭ ̶ͤ❤⃝—͟͞͞Anamika rajput 𓆩♡𓆪🥀 ⃝💜 ̶𓆪 」, 

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