Chm151 lab 12

Jenna Nguyen CHM 151LL #13297 March 24, 2024 Lab 12: Gas Laws Propose : The main purpose of this lab was to distinguish between charles and boyles law through different types of experiments and materials. Materials: Materials needed for this lab are: - Gas law lab 12 supplies bag - Water - Cup - Freezer Procedures: There are 4 parts to this lab Part 1: - Obtain the plastic straw from the lab kit - Pinch the ends of each straw - Slowly twist the straw holding both sides in a circular motion - Have someone else flick the middle of the straw - Should hear a popping sound - Take a picture of popped straw Part 2: - Obtain the plastic syringe, 2 water balloons, and water - Blow up 1 balloon with air just small enough to fit inside the syringe without touching the walls - Put it in the syringe and put the plunger at the 40mL mark, push the plunger until you cant push anymore and record it. Make sure to cover the bottom with your finger so no air escapes - Then pull the plunger as far as you can and write down the number - Repeat with the a water filled balloon - Now fill the syringe with water to the 40mL mark with the air filled balloon inside and repeat the steps of pulling the plunger in and out and record the data. - Repeat with a water filled balloon and water to the 40mL mark in the syringe. Part 3: - Blow up a regular sized balloon - Get a piece of string and measure the circumference of it - Then place the balloon in the freezer for a couple of hours - Then get the string and measure the circumference of it Part 4: - Pour water into a glass cup to the brim - Put the dry notecard on top and make sure the card covers the whole top of the cup - Put your hand over the top of the cup with the notecard - Flip the cup upside down over the sink

Jenna Nguyen CHM 151LL #13297 March 24, 2024 - If water isn't leaking, move your hand away from the notecard - Restart if the card is not sticking to the cup when it is upside down. Data: Push in plunger Pull out the plunger Observations Air filled balloon with air filled syringe 15mL 48mL shriveled water filled balloon with air filled syringe 21mL 58mL Balloon expanded Air filled balloon with water filled syringe 37mL 44mL shriveled water filled balloon with water filled syringe 38mL 44mL Balloon expanded Photos: After