Answer
$$0.37 \space M$$
Work Step by Step
1. Using the equation: $M_1V_1 = M_2V_2$
$$\frac{M_1V_1}{V_2} = M_2$$
$$M_2 = \frac{( 4.8 \space M)( 3.5 \space L )}{ 45 \space L } = 0.37 \space M$$
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