{"id":11039,"date":"2015-06-17T21:57:52","date_gmt":"2015-06-17T21:57:52","guid":{"rendered":"http:\/\/www.oracletutoring.ca\/blog\/?p=11039"},"modified":"2017-09-07T17:55:45","modified_gmt":"2017-09-07T17:55:45","slug":"pysical-chemistry-evaporation-rate","status":"publish","type":"post","link":"https:\/\/www.oracletutoring.ca\/blog\/pysical-chemistry-evaporation-rate\/","title":{"rendered":"Physical chemistry: evaporation rate"},"content":{"rendered":"

The tutor’s casual observation leads to a discussion about evaporation.<\/h1>\n

Last Saturday, my children and I had a water fight in the back yard. We filled two buckets (one for each side) from which to replenish our water guns.<\/p>\n

Looking outside today, I noticed the water in one of the buckets has lost about 2cm depth. Its diameter is 24cm (radius=12cm). What about a quick calculation of the rate the water is evaporating?<\/p>\n

First, we find the volume that has evaporated. It’s a cylindrical shaped column of height 2cm:<\/p>\n

V = \u03a0r2<\/sup>h = \u03a0(12)2<\/sup>(2)= 905cm3<\/sup> = 905mL<\/p>\n

The density of water is 1g\/mL. Therefore,<\/p>\n

905mL=905g<\/p>\n

It’s been about three hours short of four days since the water fight. Let’s call it<\/p>\n

4×24-3=93h<\/p>\n

The evaporation rate per hour is<\/p>\n

905g\/93h=9.73g\/h or 9.73mL\/h<\/p>\n

For any circular water surface in this context, the general formula for the evaporation rate is<\/p>\n

9.73g\/(hourx122<\/sup>) x R2<\/sup>=0.0676g\/hour x R2<\/sup>, R=surface radius in cm<\/p>\n

BTW: the average temp, day and night, has been around 16\u00b0C since the bucket was filled:)<\/p>\n

Jack of Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.<\/p>\n","protected":false},"excerpt":{"rendered":"

The tutor’s casual observation leads to a discussion about evaporation. Last Saturday, my children and I had a water fight in the back yard. We filled two buckets (one for each side) from which to replenish our water guns. Looking …<\/p>\n

Physical chemistry: evaporation rate<\/span> Read More »<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,7,10],"tags":[880],"class_list":["post-11039","post","type-post","status-publish","format-standard","hentry","category-chemistry","category-physics","category-sciences","tag-evaporation-rate-of-a-surface-of-water"],"_links":{"self":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/11039","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/comments?post=11039"}],"version-history":[{"count":26,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/11039\/revisions"}],"predecessor-version":[{"id":23441,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/posts\/11039\/revisions\/23441"}],"wp:attachment":[{"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/media?parent=11039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/categories?post=11039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oracletutoring.ca\/blog\/wp-json\/wp\/v2\/tags?post=11039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}