Physics, asked by Cathenna, 1 year ago

Plz. help me!

Q. 10 drops of oleic acid solution of concentration 1/400 cm³ per cm³ of alcohol, are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid, if the radius of each drop is 1.4 mm.

JinKazama1: Recheck your unit of concentration

JinKazama1: Is answer 9.15 * 10^(-8) cm thickness

JinKazama1: ????

Cathenna: No, the answer is 9.15*10^(-9)m

JinKazama1: yes I got that

Cathenna: And the values of the question are correct.

JinKazama1: yep I seen know

Answers

Answered by JinKazama1

Final Answer : 9.15 * 10^(-7) cm = 9.15 * 10^(-9) m

Steps :

I am doing all calculations in centimetre.

See this question has lot of calculation so better use Calculator.

For Calculation see pic.

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Nikki57: Thanks a lot Brother!!!

JinKazama1: My Pleasure :)

JinKazama1: @Cathenna Please use Calculator, I myself used it

Cathenna: Thank you!

JinKazama1: Hope, you understand my poor writing

Cathenna: Yes, I understood your handwriting. ☺️☺️☺️

Cathenna: Can you help me in some more questions please!

JinKazama1: Sure, I will see till afternoon

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Plz. help me!Q. 10 drops of oleic acid solution of concentration 1/400 cm³ per cm³ of alcohol, are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid, if the radius of each drop is 1.4 mm.

Answers

Plz. help me!

Q. 10 drops of oleic acid solution of concentration 1/400 cm³ per cm³ of alcohol, are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid, if the radius of each drop is 1.4 mm.