How many moles are in #7.5*10^78# atoms of zinc?

1 Answer
Jan 22, 2016

Answer:

Hmm #(7.5xx10^(78) " zinc atoms")/(6.022xx10^23" zinc atoms "mol^-1)# #=# #??? mol#

Explanation:

So this approximately #10^55# #"moles"#. Given that world production of zinc was approx #1xx10^9# #g#, in 2015, approx., #10^7# moles, this amount probably represents more of the metal than exists on Earth, and possibly more than the entire amount of zinc present in the solar system. So this is not a serious question.