heyitsmelly heyitsmelly

02-09-2021
Chemistry

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Mass and energy are conserved Question 11 options: A) only in chemical changes. B) always in physical changes and sometimes in chemical changes. C) only in physical changes. D) in chemical changes and physical changes.

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pramishas207 pramishas207

07-09-2021

Answer:

I think b always in physical changes and sometimes in chemical changes

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