A1.75-cm diameter naphthalene mothball is suspended in an air stream at 280 k, 1.0 atm, and constant velocity of 1.4 m/s. solid naphthalene exerts a vapor pressure of 2.8 pa at 280 k. consequently, the naphthalene very slowly sublimes into the passing air stream, with the rate limited by convective mass transfer. the density of solid naphthalene is 1.14 g/cm3, and the molecular weight is 128 g/mole. a. what is the initial evaporation rate of naphthalene mothball? b. how long will it take for the mothball to shrink to half of its original diameter? remember: as the mothball shrinks, its diameter is decreasing, which in turn affects the reynolds and sherwood numbers.
Solved
Show answers
More tips
- H Health and Medicine When can it be said that a person has a normal pulse?...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
Answers on questions: Chemistry
- H History Did Hitler kill himself or did he flee to Argentina? ...
- M Mathematics What is the sum of the arithmetic series: s10 = -20, d = 4, a1 =?...
- E English What are two conflicts ponyboy faces in the outsiders? a.ponyboy does not understand his schoolwork, and he does not get along with his brother sodapop. b.ponyboy does...
- S Social Studies The congressional term of a representative is? a. 3 years b. 2 years c. 4 years d. 6 years...
- C Computers and Technology Describe the need for a security or computer incident response team policy definition that addresses the delegation of authority to the CIRT response team members during...
Ответ:
See explanation
Explanation:
11/5 represents the mass number and the number of protons that boron has. 11 means that the total mass number, or the combined number of protons and neutrons is 11, while the 5 represents the number of protons. This means that the isotope must have 11-5=6 neutrons. Hope this helps!