Mexicans who have no Indian blood would still be classified as Hispanic, a race classification that is not genetically determined. Be careful though, lumping all Native Americans is one huge group is not being very respectful of them.
Lead wheel weights have been banned in the EU since July 2005, and Japan and Korea are phasing them out. Yet EPA has refused to enact a ban, instead relying on voluntary industry action.
The atomic weight is close to the number of protons and neutrons in the atom because electrons have very little mass. Lead, abbreviated Pb, is element number 82 with the corresponding atomic weight of 207.2. This is converted to grams using the constant 6.0221419828e+23. Thirty-six elements are heavier than lead, and ununoctium is the heaviest element. Learn more about Measurements