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Hello guys, i need help to do this lab. I dont know how to do the calculations. In the experiment, I got an initial mass of zinc= 3.8 g. Final mass of zinc is 3.7 g.

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if only i had paid attention in school... sorry brah

add some classmates on skype or something, next time you can ask THEM instead of the NGU community

Yeah, you're better off calling a classmate.