Escientific law of conservation of mass states that the total amount of mass in an isolated system remains constant. this means that the atoms present before a reaction are still present at the end of a reaction, they are just rearranged to form new molecules and compounds. this is a scientific law because it

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

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