One of the standard solutions used in preparing the Calibration curve in Figure 1 was a 88.5 mM Cr(NO3)3 solution. This solution was prepared by dissolving solid Cr(NO3)3 ∙ ∙9H2O hydrate in water. What mass of solid Cr(NO3)3 ∙ ∙9H2O would need to be dissolved in water to make a 0.566 L solution?

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