8/3/2019 Lab1.3Example

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Leigh-Ann Kaup & Peter KimRegular ChemistryMs. Scholten1.3 Lab

PurposeThis lab is designed to determine which brand of paper towel is most absorbent.

Background InformationThis is where you write what you already know about paper towel and its

absorbency.

HypothesisI think Schnuck’s Paper Towel will be most absorbent because the name is

the most creative.

SafetyBe cautious while handling dihydrogen monoxide.

Materials-100 mL beaker with 80mL of water filled-3x5 cm samples of Viva, Sch nuck’s Ultra Tuff, and Schnuck’s Paper Towel -Stopwatch-Graduated Cylinder

Procedure1. Measure a 9x17 cm sample of each paper towel.2. Measure 80 mL of tap water in a graduated cylinder and pour the water

into an empty 100 mL beaker.3. Fully emerge one sample of paper towel into the beaker using crucible

tongs. Remove paper towel after 30 seconds and allow the sample to dripover the beaker for another 5 seconds.

4. Measure the amount of water left in the beaker, and subtract the amount from 80 mL.

Calculations

80 mL of water – amount of water left in the beaker = amount of water absorbed bya piece of paper towel

8/3/2019 Lab1.3Example

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Data TableVIVA

(in grams)Schnuck’s Paper Towel Schnuck’s Ultra Tuff

TrialOne

Initial amount of water in the beaker:80 mLWater left in thebeaker after:63 mLWater absorbed by apaper towel:80 mL – 63 mL = 17 mL

Initial amount of water inthe beaker: 80 mLWater left in the beakerafter:74 mLWater absorbed by apaper towel:80 mL – 74 mL = 6 mL

Initial amount of water in the beaker:80 mLWater left in thebeaker after:69 mLWater absorbed by apaper towel:80 mL – 69 mL = 11 mL

TrialTwo

Initial amount of water in the beaker:80 mLWater left in thebeaker after:68 mLWater absorbed by apaper towel:80 mL – 68 mL = 12 mL

Initial amount of water inthe beaker:80 mLWater left in the beakerafter:70 mLWater absorbed by apaper towel:80 mL – 70 mL = 10 mL

Initial amount of water in the beaker:80 mLWater left in thebeaker after:69 mLWater absorbed by apaper towel:80 mL – 69 mL = 11 mL

TrialThree

Initial amount of water in the beaker:80 mLWater left in thebeaker after:69 mLWater absorbed by apaper towel:80 mL – 69 mL = 11 mL

Initial amount of water inthe beaker:80 mLWater left in the beakerafter:73 mLWater absorbed by apaper towel:80 mL – 73 mL = 7 mL

Initial amount of water in the beaker:80 mLWater left in thebeaker after:74 mLWater absorbed by apaper towel:80 mL – 74 mL = 6 mL

ResultsDo the math here.

Write a sentence that summarizes which paper towel was most absorbent.

ConclusionThe results matched my hypothesis. Schnuck’s Paper Towel was the most absorbent. (Include data here) Possible errors in my experiment could have been#1 or in #2.