From 392 mg of `H_(2)SO_(4)`, `1.204 xx 10^(21)` molecules of `H_(2)SO_(4)` are removed. How many moles of `H_(2)SO_(4)` are lef

From 392 mg of `H_(2)SO_(4)`, `1.204 xx 10^(21)` molecules of `H_(2)SO_(4)` are removed. How many moles of `H_(2)SO_(4)` are left?
A. `2 xx 10^(-3)`
B. `1.2 xx 10^(-3)`
C. `4 xx 10^(-3)`
D. `1.5 xx 10^(-3)`

From 392 mg of `H_(2)SO_(4)`, `1.204 xx 10^(21)` molecules of `H_(2)SO_(4)` are removed. How many moles of `H_(2)SO_(4)` are left?

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