identify metals |
Ad Posted: Friday, April 5, 2024
Ad Expires: Tuesday, June 4, 2024
User Information:
Posted by:
goldcaver9
User Location:
Ticonderoga, NY
All User Ads:
Status: Active
|
|
|
|
|
Ad Information:
Ad Description:
identify metals- penny in water=+, metal = -, voltmeter. gold = ~ 170 mv or less , alum = ~400 , silver = ~300 , zinc = ~600 , lead = ~500
|
|