CHEM 108 ASSESSMENT LIBERTY UNI 2026/2027

1. Express the following numbers in scientific notation: a. 5,969 = 5.969 x 10^3 b. 0.000703 = 7.03 x 10^-4 c. 15 µM (give answer in M) = 0.000015 = 1.5 x 10^-5 M d. 375 nM (give answer in M) = 0.000000375 = 3.75 x 10^-7 M e. 6.008 x 105 L = 600,800 L f. 9.075 x 10-4 mL = 0.0009075 Ml 2. Define: mole, molar mass & molecule Mole: The amount of substance that contains as many particles as there are in exactly 12.g of 12C. (6.02 x 1023) Molar mass: the mass in gram of I mole of atom/molecules. Molecule: an aggregation of 2 or more atoms that are bonded together in a definite arrangement 3. x/2 + 16 = 20 8 4. How many grams of Zn are in 0.365 moles of Zn? 0.365moles(65.4g/mole) = 23.9g