50ml of water are 20°©was mixed with 100ml of water at 90°,the density of water is about 1g\ml . determine de final temperature after mixing the sample of water

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explanation:

characterization of nanoparticles is a critical step in nanomaterial production as it provides information of dimension, morphology, surface charge, distribution and degree of surface functionalization.

answer; the above statement is (true);

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answer: collecting information/data

reason: the student is going around and asking people questions to collect data

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