Question

In: Chemistry

Hello! We just had a lab where we took measurements of a water-ethanol mix with a...

Hello! We just had a lab where we took measurements of a water-ethanol mix with a densitometer and got volume of ethanol/(total volume of ethanol and water together) and I am stuck on how to convert that to mole fraction of ethanol? Thank you so much!

Solutions

Expert Solution

I have given the answer with the help of the given information. It may be better you will give a detail of the experiments that you have performed.

See the below:


Related Solutions

In lab, you will experiment with three solutions ‒ DI water, ethanol, and 4M CaCl2 ‒...
In lab, you will experiment with three solutions ‒ DI water, ethanol, and 4M CaCl2 ‒ to develop a method to separate 6 types of plastic. What ideas do you have about possible methods to separate the plastics using these solutions? How could you change the densities of the solutions that are provided? How could you group the types of plastics to work out a separation method? (The intent of this question is for you to generate ideas, and as...
for cellular respiration lab we had germinated peas and then we had germinated peas that we...
for cellular respiration lab we had germinated peas and then we had germinated peas that we boiled for five minutes. when you boil the peas do they become non-germinated? is CO2 produced in both germinating and non germinating peas?
Hello I'm stuck on my chemistry lab report. a. calculate the heat gained by the water...
Hello I'm stuck on my chemistry lab report. a. calculate the heat gained by the water in the calorimeter (qwater) after adding the aluminum. b. calculate the heat gained by the calorimeter (qcal) after adding aluminum. c. using results from questions a and b, calculate the heat lost by the aluminum (qmetal). d. calculate the specific heat capacity of aluminum in J/gk. e. determine percent error in the value of the heat capacity of aluminum by comparing it to its...
Internal Resistance of a battery lab I'm doing this lab where we have to find the...
Internal Resistance of a battery lab I'm doing this lab where we have to find the internal resistance of a charged and uncharged battery. We got our data by plotting a V vs I graph, and found the internal resistance of each battery using the slopes of the graphs. From my graphs, I can see that the internal resistance of the charged battery is higher than that of the uncharged one. Which makes sense. However, I'm having a hard time...
We conducted a lab in which we had to determine the molecular weight of a volatile...
We conducted a lab in which we had to determine the molecular weight of a volatile liquid. My professor wants us to explain why Graham's Law of Effusion works for this procedure? The experiment consisted of us heat up a test tube with a volatile liquid. The lid of the test tube was covered in tin foil with a pin hole to allow for the gas to escape. Please don't just define Graham's Law. Tell me why it works here.
In this lab, we will build a couple of classes, where one will be composed into...
In this lab, we will build a couple of classes, where one will be composed into the other. Work in pairs if you wish. Problem We saw Point.java in class last week. Do the following, one step at a time, making sure it works before you go on to the next step. Be sure to get help if you have any difficulties. You may use Point.java from last week or build a new one of your own. If you are...
Why do we boil water first, in the vinager analysis lab?
Why do we boil water first, in the vinager analysis lab?
We are doing a lab on Grignard Reactions, i'm just looking to verify the system by...
We are doing a lab on Grignard Reactions, i'm just looking to verify the system by which to find this information: Add about 2 mmol Mg powder, recording the mass to the nearest milligram. In this experiment, magnesium will be the limiting reactant because a 5% excess of bromobenzene will be used. Using your mass of Mg, determine the mass of bromobenzene to be used, being sure to calculate a 5% molar excess.
Heat of Vaporization Questions We did a lab where we placed a graduated cylinder upside down...
Heat of Vaporization Questions We did a lab where we placed a graduated cylinder upside down in a beaker to observe the air bubble and how it was affected by temperature. There are a few questions I need help with: 1. You have assumed the vapor pressure of water below 5 degrees Celsius to be negligible. How would the inclusion of its actual vapor pressure affect your results? 2. Assume the graph of ln(P) versus 1/T results in a curved...
We're doing a lab about Basic Oscilloscope Operation. We had a Lissajous Figures Activity and we...
We're doing a lab about Basic Oscilloscope Operation. We had a Lissajous Figures Activity and we need to generate the infinity pattern using the oscilloscope. Please help me with this question. Question 2: Generating images electronically has become a multibillion dollar industry since the advent of the television in 1920s and its subsequent mass adoption by consumers after the second world war. The oscilloscopes you have learned to use can be thought of as a primitive television. Watch the following...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT