7) Which of the following 100.0g samples contains the greatest number of atoms? [3] A. Potassium B. Iodine C. Cobalt D. Silver 1) Which of the following is a qualitative method? A. Gravimetric measurements B. Spectroscopic methods C. Titrimetric method D. Precipitation method 2) Which of the following represents the limit of detection (LOD)? [2] A. A B. B C. C D. BC 3) What is the pH of a 0.03MNaOH solution? A. 1.52 B. 12.48 C. 0.04 D. 0.08 4) The OHconcentration in a 1.0103MBa(OH)2 solution is A. 0.50103M B. 1.0103M C. 2.0103M D. 1.0102M 5) The answer to the calculation 87.83.00.080065 should have how n significant figures? A. 3 B. 6 C. 2 D. 4 6) Identify the conjugate Base of H2CO3. A. H2O B. HCO3 C. CO32 D. CO2 7) 15ml of 0.1MHCl is titrated with 0.2MNaOH. Calculate the pH after the addition of 5ml of titrant [2] A. 4 B. 3 C. 1.6 D. 12.4 8) According to Acid-Base theories, which one of the below is a Base [1] A. Electron pain acceptor B. Proton donor C. Proton acceptor D. All of the above