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How salty does the sea have to be to make an egg float?
Posted: Fri Nov 27, 2015 8:36 pm
by AprilBaby03
I am confused on how to find the absolute salt concentration. I have not done chemistry yet. Can you please reply ASAP? Thank you
Re: How salty does the sea have to be to make an egg float?
Posted: Fri Nov 27, 2015 10:09 pm
by AprilBaby03
I read some of the other post and figured out how to find the absolute salt concentration. Now I'm just wondering if I'm supposed to add more solution to cup 2 for the dilution and then add 25% tap water.
Re: How salty does the sea have to be to make an egg float?
Posted: Mon Nov 30, 2015 3:22 pm
by trystanloustau
Hi. Sounds like a fun project! In step 4, add 3/4 cup of water to cup #2 and then add 3/4 cup of the sock solution. You add 3/4 cup of water to the remaining cups as well, but not straight stock solution. Instead, after you have mixed the stock solution and the water in cup 2, take 3/4 of the whole thing and mix it in the water in cup 3 to create a less concentrated solution. Then, take 3/4 of the newly made solution in cup three and mix it with the water in cup 4.
Good luck!
Trystan
Re: How salty does the sea have to be to make an egg float?
Posted: Mon Nov 30, 2015 5:15 pm
by AprilBaby03
Thank you!!
Re: How salty does the sea have to be to make an egg float?
Posted: Fri Dec 18, 2015 6:57 am
by ZacharyThomas
hey guys thank you for your time in advance i just want to know if this is a good idea but instead have 5 cup and put in 25 gram of salt except cup 5 which you put 50 grams.
Re: How salty does the sea have to be to make an egg float?
Posted: Sun Dec 20, 2015 5:44 pm
by PharmaMan
Hi Zachary,
If you use only 25g of salt for the stock solution, it may be too low to perform the experiment. Additionally, cup 5 should still serve as the negative control (plain tap water). This is a necessary control to which you will compare the rest of your experimental conditions.
Let us know if you have further questions.
Pharma