Answer to Question #282181 in Organic Chemistry for Nat

Question

POLYER LAB  Chemistry 30

1. Use a graduated cylinder (or teaspoon)* to add 10 mL of tap water to a Dixie Cup. With a pen, mark the level of the water on the outside of the cup. Add an additional 10 mL of water to the cup and mark the water level. Repeat 2 times until a total of 40 mL has been added to the cup. Now dump out all the water. 2. Measure 10 mL of tap water into the Dixie cup and add 3-4 drops of food coloring. 3. Using the markings on the Dixie cup, add ~10 mL of Elmer’s white glue directly to the cup and mix (stir rod

or spoon) gently until the mixture has a uniform consistency. 4. Use a graduated cylinder (or 1⁄2 cup measuring cup) to measure 125mL of tap water in a beaker (larger plastic

container). an electronic balance, weigh boat (or wax paper) and a scoopula (or teaspoon), add 8.7 grams of Borax to the water. This is your saturated (6.5%) sodium tetraborate solution. solid is dissolved.

Answer 1

Molecules contained in a liquid evaporate from the surface area. This means that the larger the surface area, the faster the rate of evaporation. Test this by putting water into two different containers.This means all the other factors that affect the rate of evaporation are identical.