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OpenStudy (anonymous):

Scientific research has found many negative effects of common household materials. Which of the following elements was once used in paint but was found to be dangerous? argon (Ar) calcium (Ca) lead (Pb) mercury (Hg)

OpenStudy (aravindg):

lead

OpenStudy (anonymous):

lead was used as paint originally?? I didn't know that

OpenStudy (aravindg):

i am nt sure srry

OpenStudy (anonymous):

eh, its okay

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