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A chemist prepares a solution of zinc nitrate ( Z n ( N O 3 ) 2 ) by measuring out 2 . 9 1

A chemist prepares a solution of zinc nitrate

(Z n (N O_{3})_{2})

by measuring out

2.9 10^{2} m o l

of zinc nitrate into a

250 . m L

volumetric flask and filling the flask to the mark with water.

Calculate the concentration in mmo

\frac{l}{L}

of the chemist's zinc nitrate solution. Round your answer to

2

significant digits.

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