U7 PS CVA Airbag Lab Chemical Reactions

What is the first step mentioned in the experimental procedure for developing a model airbag?

• Measure the volume of the bag

• Put on safety goggles and an apron

• Calculate moles of CO2

• Use the balanced chemical equation

How is the volume of the bag measured in the experiment?

• By using a ruler to measure its dimensions

• By filling it with water and pouring it into a graduated cylinder

• By weighing the empty bag and then the filled bag

• By submerging it in water and measuring displacement

What is the calculated number of moles of CO2 needed for the model airbag, given a volume of 0.650 L, pressure of 1 atm, and temperature of 298K? (R = 0.0821 L·atm/(mol·K)) **The help sheet is attached. This is really difficult.

• 0.0133 mol

• 0.0266 mol

• 0.0532 mol

• 0.1330 mol

How many grams of sodium bicarbonate (NaHCO3) are needed if 0.0266 moles are required and its molar mass is 84.01 g/mol?

• 1.12 g

• 2.23 g

• 4.46 g

• 8.40 g

What four measurements are the students planning to record for each trial in their experiment?

• Mass of baking soda, volume of water, time to inflate, and circumference of the inflated bag.

• Mass of baking soda, volume of vinegar, time to inflate, and circumference of the inflated bag.

• Mass of vinegar, volume of baking soda, temperature, and circumference of the inflated bag.

• Mass of baking soda, volume of vinegar, temperature, and time to inflate.

What safety equipment are students instructed to wear before starting the experiment?

• Gloves and a lab coat.

• Safety goggles and an apron.

• Face shield and ear protection.

• Respirator and safety shoes.

Which scientific law are the students applying to calculate the amount of gas produced?

• Boyle's Law

• Charles's Law

• Ideal Gas Law

• Gay-Lussac's Law

What is the primary goal of the engineering design challenge presented in the video?

• To measure the density of different gases.

• To determine the reaction rate of baking soda and vinegar.

• To design and build a model of an airbag.

• To calculate the molar mass of carbon dioxide.