Gas laws

Each experiment yielded its own unique set of observations, calculations and results. The first experiment studied the relationship between volume and pressure, while keeping the amount of the gas sample and temperature constant. Table 1 shows the atmospheric pressure recorded during the experiment. Atmospheric Pressure (mm Hg) 644.0 mm Hg Table 1. Atmospheric pressure was recorded using barometer in lab next door. This atmospheric pressure is of the lab next door, and is not the atmospheric…

Third, we will investigate Charles Law. This will aid us to understand how different temperatures can affect a basketball. Fourth, we will search how the bounce of the ball relates to its air pressure. Next we will consider the Kinetic Theory of Gases. This theory can help us learn what the molecules themselves are doing inside the object (basketball). Finally, we will explore effusion. Although it branches off the Kinetic Theory of Gases, it explains how gas molecules are entering the…

Hobbytown Rocket V.S. Chemistry Rocket Research Paper A Rocket is a projectile that can operate on it's own without oxygen by the combustion of it's contents. Rockets are particularly interesting because it has transported mankind where they have never been before. That is why this project is on Rocketry, but with small scale rockets. The purpose of this project is to see if a homemade Chemistry Rocket, fuel made of baking soda and vinegar, can equal the endurance and/or the height of a…

Introduction Vapor pressure is the pressure of a vapor (gas) at equilibrium; equilibrium occurs when there is no net change between the amount of liquid and the amount of vapor because they balance each other. When the temperature of water becomes extremely low, as it does in this experiment, the rate of vaporization does not matter. The objective of this experiment is to determine the experimental heat of vaporization and compare it to the accepted heat of vaporization of water (40.7 kj/mol).…

Exercise 1 The abundance of nitrogen in the standard dry atmospheric composition is 781,000ppmv. The mass mixing ratio is the volume mixing ratio multiplied by the molecular mass of nitrogen all divided by the molecular mass of air. As the molecular mass of air, 28.8g, is higher than the molecular mass of nitrogen, 28g, the mass mixing ratio would be lower than the volume mixing ratio. a) m=F/a m=101300/9.8=10,336 An estimate of the total mass of a column of the atmosphere with a base…

vs. Volume and Boyle’s Law Pre-Lab Questions According to our modern understanding of the gas laws, there are four measurable properties (variables) of a gas. These variables are P (pressure), V (volume), T (temperature), and n (number of moles). In Boyle’s experiment, which two variables were held constant? Both the temperature (T) and the number of moles of gas (n) were held constant in Boyle’s experiment. Fill in the blanks to summarize the relationship among the gas properties in Boyle’s…

Introduction: Photosynthesis is the process used by plants, algae and some bacteria, to use the energy from the sunlight to transform carbon dioxide and water into glucose and oxygen. The equation for photosynthesis is: carbon dioxide + water light energy glucose + oxygen. Chloroplasts are an organelle found in the leaves of green plants and are essential in photosynthesis as they are responsible for producing the glucose and storing the energy. Photosynthesis is vital for all life on…

Procedure: Before beginning each experiment, remove all clutter from the workstation and read the directions for the experiments thoroughly. Part 1: Warm slightly more than 300 mL of water to approximately 70 degrees Celsius. Measure out 150 mL of water into the coffee cup calorimeter. Take the temperature of this water in the coffee cup calorimeter once it has reached a steady temperature. Then, add an ice cube approximately the size of a large marshmallow. Stir the ice and water and measure…

This reaction involves very intricate and steps that are critical to understanding the concept of equilibrium as a whole. First, an important concept to understand when describing any reaction is the idea of collision probability. When we examine gas molecules in a 1 cm3 container, there can be billions of collisions per second between neighboring molecules, and even then, maybe only one of these collisions result in a reaction. If any one collision occurs, the only way they will react to form a…

Ultrasonic interferometer Working principle An ultrasonic interferometer is a simple and direct device to determine the ultrasonic velocity in liquids with a high degree of accuracy. An ultrasonic interferometer is used to determine the accurate ultrasonic velocity in liquids. The principle used in the measurement of velocity is based on the accurate determination of the wavelength in the medium. The principle of ultrasonic interferometer for the measurement of velocity is determination of the…