tag:blogger.com,1999:blog-12261589.post112250825920784729..comments2020-01-16T15:36:27.729-05:00Comments on The Culture of Chemistry: Sink or swim?Michellehttp://www.blogger.com/profile/12617476463347663364noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-12261589.post-1123095610893200592005-08-03T15:00:00.000-04:002005-08-03T15:00:00.000-04:00I like the quantitative analysis!I like the quantitative analysis!Michellehttps://www.blogger.com/profile/12617476463347663364noreply@blogger.comtag:blogger.com,1999:blog-12261589.post-1122745018243394912005-07-30T13:36:00.000-04:002005-07-30T13:36:00.000-04:00This is interesting.In retrospect, it is predictab...This is interesting.<BR/><BR/>In retrospect, it is predictable that soda with a sweetener many times sweeter than sucrose should float. But, post-predictions don't count, do they?<BR/><BR/>The ordinary soda can I just measured was approximately 12 cm high and had a diameter of 6.6 cm. Assuming that it is a perfect cylinder (in reality it is not) and ignoring the thickness of the can, its volume is approximately 410 cm3. The label gives the volume of soda inside as 355 ml.<BR/><BR/>Therefore, a full can of soda will float if [355 g + weight of can] =< 410 g. [I don't have an empty can to weigh.] If we add to that about 40 g of sucrose (ignoring the weights of flavors and CO2), but subtract the weight of water that sucrose is displacing so that the total volume stays 355 ml, we will have the total weight of a can of ordinary soda, which is probably slightly higher than 410 g. Thus, such a can will sink.<BR/><BR/>On the other hand, because aspartame is much sweeter than sucrose, there is probably very little of it is used and once again ignoring the weights of flavors and CO2, I will guess that the weight of a can of diet soda is probably close to [355 g + weight of can]. Therefore, it will swim.<BR/><BR/>Hey, I should have posted this on my own blog!AYDIN Ă–RSTANhttps://www.blogger.com/profile/09891160904748206385noreply@blogger.com