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Objective question (only one correct). ...

Objective question (only one correct).
I. Which of the following has least mass?
a. 1 mol of `S` b. `3 xx 10^(23)` atom of `C`
c. `2 g` atom of nitrogen d. `7.0 g of Ag`
ii. The simplest formula of a compound containing 50% of element `A` (atomic mass 10) and 50% of element `B` (atomic mass 20) is:
a. `AB` b. `A_(2) B` c. `A_(2) B_(3)` d. `AB_(3)`

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