A chemist must prepare 275. mL of 340. mM aqueous iron(III) bromide (FeBr,) working solution. He'll do this by pouring out some 0.621 M aqueous iron( bromide stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the iron(III) bromide stock solution that the chemist should pour out. Be sure your answer has the correct number of significa digits. mL

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A:

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Q: a) State the number of significant figures in the following examples: i) 17.4 x 104 mg ii) 0.00650…

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