Unformatted text preview: impurities by weight. What mass of lead is contained in 75 grams of this ore? 7. Adipic acid (MW 146.1 g/mol) is used to make synthetic fabrics. It only contains C, O and H. Combustion of a 1.6380g sample gives 2.960g of CO 2 and 1.010g of H 2 O. What is the empirical and molecular formula for adipic acid? 8. Timolol is used to reduce the need for heart bypass surgery. Its composition is 47.2% C, 6.44% H, 13.0% N, 25.9% O and 7.43% S. The mass of 0.0100 mol of timolol is 4.32g. What is the empirical and molecular formula? 9. A solution is 25% (m/v) NaOH. What volume of water is needed to dissolve 16.23g of NaOH to obtain this concentration? 10. What is the concentration (in % v/v) if 1.5 mL of acetic acid is dissolved in 30.0 mL of water?...
View Full Document
This note was uploaded on 02/22/2011 for the course CS 1112 taught by Professor Dr.d during the Fall '11 term at McMaster University.
- Fall '11