Pre-Lab - Molarity and Dilutions

What is the name of the glassware used in this lab to make the stock solution?

• volumetric flask

• erlenmeyer flask

• test tube

• graduated cylinder

What is the correct order for filling the volumetric flask?

• water, solid, food dye

• water, food dye, solid

• solid, food dye, water

How do  you calculate the grams of sugar used in this lab?

• Rearrange M=n/V for n (moles).  Then convert to grams using the molar mass of the solute.

• Since the lab states 0.0500 M, it is 0.0500 grams.

• Multiply the 0.0500 M by the molar mass of the solute.

• Rearrange M=n/V for n (moles).  Then convert to grams using the molar mass of the solvent.

What final volume will your dilute solutions be in the lab?

• 5.0 mL

• 50.0 mL

• It depends on the molarity of the dilutions.

• 10.0 mL