Tweets

Luann ChristensenLee @stardiverr But then you have the % yield issue. It’s pretty low for students decomposing carbonates, I’ve found. 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience That's the problem I proposed...if measuring gas, it uses ideal gas, which is what he's trying to test. 6 years 3 months ago Reply Retweet Favorite
Luann ChristensenLee @stardiverr If they’re measuring the gas, then will still need to use ideal gas law. Measure the other product. 6 years 3 months ago Reply Retweet Favorite
Luann ChristensenLee @stardiverr Collect using water displacement and adjust for water vapor pressure? 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience (cont from previous tweet) but I'm not convinced that is valid either. (Mass of air in the 'empty' flask?) 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience That's my worry. Student tried measuring flask with gas produced (e.g. CO2) after massing 'empty' and used mass to find n. 6 years 3 months ago Reply Retweet Favorite
Luann ChristensenLee @stardiverr Indirect measurements from chemical reactions? Stoich of non-gaseous products, then theoretical yield? Not very valid... 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Thanks! I thought of that...but wondered about assumptions: 100%yield, gas produced fills volume completely (no air). 6 years 3 months ago Reply Retweet Favorite
Kristin Gregory @KristinGregory7 Perhaps use the stoichiometry of a decomp rxn that produces a gas to find n & work backwards 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Excited, as I have a student filming a reaction for an independent project. Life is good. http://t.co/IFgkS9Fhf8 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience The basis for the question: Student wants to verify/examine ideal gas law. 6 years 3 months ago Reply Retweet Favorite
Lowell Thomson @ThomsonScience Any thoughts on how to find n for a gas without using Ideal Gas Law? 6 years 3 months ago Reply Retweet Favorite
Erica Posthuma @eposthuma Friday night with writing Q's http://t.co/Ylax9D7lTx 6 years 3 months ago Reply Retweet Favorite
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Lowell Thomson @ThomsonScience Ah...alright. What about 'important reactions' such as Haber Process and how they changed the world? 6 years 3 months ago Reply Retweet Favorite