There are 8 total hydrogen (H) atoms.
Rubber.
Iron, copper, and graphite are minerals. Rubber is not a mineral.
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Nuetrons=neutral
protons =positive
electrons=negative
The number of atoms of phosphorus in copper (II) phosphate [Cu3 (PO4)2] is determined by multiplying first 9.20 by 2 since there are two phosphorus atoms in the compound and multiplying again with Avogadro's number. The answer is 1.108 x 10^25 atoms.