prelab SKILLS test

prelab SKILLS test - How many grams(to the nearest 0.1 g of...

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How many grams (to the nearest 0.1 g) of Fe(NO 3 ) 3 ·9H 2 O are required to prepare 250.0 mL of a 0.221 M solution of Fe(NO 3 ) 3 ·9H 2 O? 22.3 What is the molarity (to three decimal places) of the resulting solution when 20.889 grams of Mn(ClO 4 ) 2 ·6H 2 O are added to 550.0 mL of water? .105 M How many milliliters (to two decimal places) of a 0.978 M H 2 SO 4 solution must be used to make 250.0 mL of a 0.192 M H 2 SO 4 solution? 49.08 mL If 8.53 mL of a 1.653 M KMnO 4 solution are diluted to a final volume of 75.0 mL, what is the resulting molarity (to 3 decimal places)? .188 M In the video entitled "Dissolving a Solid in a Volumetric Flask" under Solutions, Lindsey demonstrates a quantitative transfer. Select all of the following that are important to achieve a quantitative transfer when adding a solid to a volumetric flask. Gentle tapping on the paper funnel so that no solid is left clinging to it. Rinsing the weighing beaker with deionized water or the solvent being used and adding it to the volumetric flask. Rinsing the paper funnel with deionized water or the solvent being used into the volumetric flask. Making sure that no solid is spilled when pouring it from the weighing beaker through the paper funnel. Rinsing the weighing beaker with deionized water or the solvent being used and disposing of it in the waste bottle. After transferring all the solid from a weighing beaker into a volumetric flask, which of the following describes the step or steps to finish making the solution? Once the solid is dissolved, fill the volumetric flask almost to the etched line and finish adding solvent dropwise until the bottom of the meniscus is touching the etched line. Fill the volumetric flask all the way to the etched line, stopper it and invert a few times to ensure complete mixing and that the solid is dissolved. Once the solid is dissolved, fill the volumetric flask almost to the etched line and finish adding solvent dropwise until the top of the meniscus is touching the etched line.
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Fill the volumetric flask with a significant volume anywhere from about from half-way to where the neck narrows. Stopper the flask and invert a few times to ensure complete mixing and that
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prelab SKILLS test - How many grams(to the nearest 0.1 g of...

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