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The page below is a sample from the LabCE course Mathematic Calculations and Applications for the Histology Laboratory. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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The histotechnician in the previous question misread the concentration of sodium acetate she needs for her special stain.
She needs to prepare only 500 mL of 0.5M C2H3NaO2. How much solute does she need?
(Atomic weights: Na = 22.99; C = 12.01; H = 1; O = 16)

Please select the single best answer