Answer
$t=6.26\ s$
Work Step by Step
For a zero-order reaction:
$C-C_0=-kt$
Initial concentration: $0.16\ g\div17.03\ g/mol\div1.0\ L=0.0094\ mol/L$
$0-0.0094=-0.0015\times t\rightarrow t=6.26\ s$
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