Aspherical vessel has internal radius r, and a wall of thickness b and thermal conductivity k pluid at temperature t, is stored in its interior, while its external side is in contact with cold air of temperature t. find the temperature distribution within the wall, as well as the energy that mus be offered to the internal fluid to keep its temperature constant.

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

Calculate the number of moles of ethane in 100 grams

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.