20 g O2 x 1 mol O2/32 g O = 0.625 mol O2
Just dived both numbers by two
Nickel is a pure substance
Rust is also a pure substance
Answer:
gahwidsuacsgsuacayau1joagavahiq8wtw8quavakiafabajozyavqhaigavayquata
Explanation:
vahaiqgahiavavqugafayqigqvsbjsiagwyeiwvvs
