Molar Mass Of Volatile Liquid Lab Report

The purpose of this experiment is to learn how use a variety of tools that will aid in the gathering of data. This data is then used to calculate different measurements including, volume and density. The experiment will also further understanding of measurement errors using the data collected.

Molar Mass is basically in grams per mole for example salt has a molar mass of 5.8g per mole. The mass of an element refers to 6.0221415x1023 molecules of the substance. Molar Mass helps us figure out how many grams per mole we need to do this project and it helps us know how much we need to put into the solution. If you don’t Find

To begin, we formulated a method in which each unknown substance and compound were compared to find their molar relationships. In the experiment we calculated the molar mass of every compound by determining the amount of moles per gram in each element using the periodic table and then added them together. We then

Using the direct weighing and weighing by difference methods to find weight and mass of chemicals and compounds.

The purpose of this lab is to identify the molecular mass of the volatile liquid. The molecular mass needs to be identified because it is a property that helps determine a substance. Since the substance is volatile, or easily evaporated, the liquid can be converted into gas. As the substance converts into gas, the ideal gas law, PV=nRT, can be used to calculate the the number of moles. Once, the number of moles is calculated, it is used in the molecular mass equation, which is, molecular mass = grams /mol. The grams of the gas is taken directly by measuring the substance, and the moles is taken indirectly through the calculations of the ideal gas law. The result of the calculations should be the molecular mass of the substance.

The purpose of this lab is to measure densities and understand how it can be used to identify unknown substances. Density is determined by a substance mass divided by its volume. It's possible to identify a substance by its density because density is an intensive property that does not change with the size of the substance.Density is also an intensive property , which depends on the type of matter not the amount. Density is also a qualitative observation which is descriptive info about a substance. In addition temperature can affect a substance's density, because it affects its mass and its volume.

The purpose of this experiment is to identify an unknown substance by measuring the density and boiling point. I will be able to conclude which substance is my own from a list of known options stating what its real boiling point and density is.

The purpose of this lab is to find the molar mass of mixed gases in a lighter, and to calculate the exact mixture of gases in the lighter. While collecting the volume of Butane gas in a lighter, the molar mass can also be determined. When attempting to find the molar mass, water displacement is the best method to use. This can be determined because the equal volumes of all gases contain equal number of particles, so long as they are measured at the same temperature and pressure. Ideal gas law is the chemistry involved with this experiment. The equations M=mRT/PV and PV=nRT can be seen throughout this experiment.

Purpose- The purpose of the experiment was to investigate the effect of mass and volume on the density of water.

By manipulating the ideal gas law (PV=nRT), we will be determining the molar mass of an unknown volatile liquid. Heating a flask filled with an unknown, easily evaporated liquid will allow for measurements that can be taken to work out the ideal gas equation. This lab will require knowledge of basic equations used in chemistry. Using these equations, such as density and number of moles(n), we can substitute different values into the ideal gas law to manipulate it.

64.9mL x 1L/1000 mL = 0.0649 liters We also had to convert Celsius into Kelvin so that we could plug the number into the equation. 21.0°C + 273 K = 294 K Lastly, we plugged in these numbers into the equation to solve for the molar mass of the gas. The equation is: Pressure x Volume = mass x constant x temperature Molar mass (736.6156)(0.0649) = (0.18)(62.4)(294) M Molar mass= 69.075

I did not copy this work from any others student(s), current students in lab, or old lab reports.

Procedure. For this experiment, the first task was to determine which equipment would be used to measure volume accurately. The choices were a 10.0 mL

m = the mass of water used, (1 ml of water = 1 g of water) - in grams (g)

The ideal gas law relates the four conditions that are used to describe a gas, which are pressure, volume, number of moles, and temperature, along with the gas constant, R. This law is represented in an equation, which equates pressure multiplied by volume with the number of moles times the gas constant and the temperature. It is represented in the equation, PV = nRT. “R” represents the gas constant, which replaces the need for a second sample of gas when solving for a variable. The value of the gas constant depends on its units, kPa or atm, which can either be 8.31 or .0821, respectively. With this formula, anything can be solved for, which makes finding any of the variables far easier. This includes the number of moles. When the mass collected of a substance is divided by the moles of that same substance, it equates the molar mass in grams per mol of that, which would prove to be very useful in this lab.