Chemistry Learning Center 230 Davenport Hall Chemistry TAs available from 9 am – 5pm Mondays – Fridays. Chemistry 202 TAs in the CLC: Mondays: 11am-1pm, 3pm-5pm Wednesdays: 3pm-5pm Thursdays: 3pm-5pm

Lon-Capa 1st HW assignment due Friday, 9/2, 5 pm. It is open now. 1st Quiz due Sunday, 9/4 by 10 pm. It will open today at 5 pm. 30 minutes once started. 2 attempts per problem.

For Friday Continue working on Lon-Capa. Start Chapter 5. See me or email me if there are any questions or concerns.

At This Point… Finished Chapter 4 (reading and text homework). Watched Chapter 4 video (and all Chapter 3 videos). Finished most Lon-Capa homework. Ready for Chapter 5.

James Scholar Opportunity REACT (Reaching and Education America's Chemists of Tomorrow) is an outreach program that goes to elementary schools to teach students chemistry. September 6th, 7th, or the 8th at 7pm in room 112 Transportation Building. For questions please email the REACT student president Angela Hyon at thereactprogram@gmail.com

Concentration of Vinegar? Knowing that vinegar is an aqueous solution that is 5.00% acetic acid [HC2H3O2(aq)] by mass and has a density of 1.01 g/mL, determine the concentration of vinegar in terms of molarity.

NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g) How Much Vinegar? NaHCO3(s) + HC2H3O2(aq) → NaC2H3O2 (aq) + H2O(l) + CO2(g) We have 10.5 g of baking soda. Knowing that vinegar is 0.841M acetic acid, determine the minimum volume of vinegar required for a complete reaction. [~149 mL]

Clicker Question How much water must be added to 250.0 mL of a 0.1000M NaCl solution to make a 0.0800M solution of NaCl? A) 42.1 mL B) 62.5 mL C) 180.0 mL D) 312.5 mL E) 412.5 mL

Clicker Question You mix 100.0 mL of 0.100M lead(II) nitrate with 150.0 mL of 0.100M sodium chloride. Determine the concentration of Pb2+ in the final mixture. A) 0.0100M B) 0.0250M C) 0.100M D) 0.150M E) 0 M