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Recent Posts by BRYAN

Fri Dec 21, 2018 7:48 PM in Stoichiometry Resources
Drop me a line after the weekend and I’ll send you an activity that has students doing stoichiometry without knowing they’re learning. All while roasting marshmallows for s’mores. Best, Bryan Smith Anchorage

Tue Sep 12, 2017 10:10 AM in Elephant Toothpaste
Jesus, I find much less expensive 30% H2O2 at a local store that sells water purification systems. The concentration is key since the reaction is exothermic enough to auto-accelerate. Be sure you test it with small amounts first, because those higher concentrations of H2O2 present additional hazards. Best, Bryan=

Tue Mar 21, 2017 5:54 PM in Planet Protection Chemistry Labs?
Kyle, would you be interested in measuring the CO2 concentration in the air? I’ve worked up a gravimetric method that traps the CO2 in diluted sodium hydroxide, then precipitate with barium chloride. In addition to the chemicals, the only at all unusual equipment is a small air pump (like you’d find in a small fish tank) per group. Rolling this lab into a conversation/seminar on global energy s...