Question

3mL of ethonal is added to a 125mL Erlenmeyer flask with a stopper Calculate the preasure...

3mL of ethonal is added to a 125mL Erlenmeyer flask with a stopper

Calculate the preasure of just the air in the flask. The volume and number of moles air stays constant. Please just show how to do one calculation so I can so the rest on my own. Please and thank you.

Temp(C).      Pressure

before 3mL ethonal

22.5.             103.05

after 3mL ethanol

22.5.             107.03

26.1.              110.05

28.7               111.96

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

To calculate just the air pressure, note that air pressure before adding ethanol - which 103.05

at different temperatures you can calculate it using the relationship, P1/T1 = P2/T2

and substracting the air pressure from the total pressure given after adding 3ml ethanol at different temperatures results the pressure of just ethanol, because of the relaltionship total pressure = sum of the partial pressure of the gases.

P air P ethanol
295.5 107.03 103.05 3.98
299.1 110.05 104.3054315 5.7445685
301.7 111.96 105.212132 6.747868
0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Can someone verify for me that I'm doing this correctly? For data analysis, part b: All...
Can someone verify for me that I'm doing this correctly? For data analysis, part b: All S2O32- is consumed at the end of the reaction. Therefore, the moles of S2O32- consumed can be calculated using the equation below. (moles S2O32-)consumed = Mstock x (Vstock) My instructor states "The stock sodium thiosulfate (S2O3) is 0.01M 0.01M x 0.010 L = 0.0001moles S2O3" So I did the rest of this accordingly (below), and it differs a lot from what's on this website....
Below is the background info for the lab assignment. The 4 blank boxes are the questions...
Below is the background info for the lab assignment. The 4 blank boxes are the questions I would like answers too. The end point for the fine titration was 35.90 mL in the burette when the solution turned bright green again. And the coarse titration I got 35.36mL as the end point. 35.9 mL is exact in case you need that info. Thanks! Background In this lab, we will determine the amount of alcohol (ethanol), C2H5OH, in a commercial vodka...
Chemical Reactions Types and Their Equations Making Heat with Chemical Reactions Have you ever wondered how...
Chemical Reactions Types and Their Equations Making Heat with Chemical Reactions Have you ever wondered how an instant heat pack works? A disposable heat pack works by a chemical reaction that combines iron in the package with oxygen from the air when the outer packaging is removed producing iron oxide. You have probably seen the product of this reaction in what is commonly called rust. The reaction releases heat, which allows the pack to reach a sufficient temperature that is...
do all five questions Question 1 20 pts Ignoring the effects of air resistance, if a...
do all five questions Question 1 20 pts Ignoring the effects of air resistance, if a ball falls freely toward the ground, its total mechanical energy Group of answer choices increases remains the same not enough information decreases Flag this Question Question 2 20 pts A child jumps off a wall from an initial height of 16.4 m and lands on a trampoline. Before the child springs back up into the air the trampoline compresses 1.8 meters. The spring constant...
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary...
Please answer the following Case analysis questions 1-How is New Balance performing compared to its primary rivals? How will the acquisition of Reebok by Adidas impact the structure of the athletic shoe industry? Is this likely to be favorable or unfavorable for New Balance? 2- What issues does New Balance management need to address? 3-What recommendations would you make to New Balance Management? What does New Balance need to do to continue to be successful? Should management continue to invest...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT