Exam (elaborations) CHEM 108 PRACTICE FINAL EXAM ANSWERS- PORTAGE LEARNING PRACTICE EXAM Using the following information, complete the two conversions shown below, showing all work: 1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts 1 mile = 5280 feet 1

Exam (elaborations) CHEM 108 PRACTICE FINAL EXAM ANSWERS- PORTAGE LEARNING PRACTICE EXAM Using the following information, complete the two conversions shown below, showing all work: 1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts 1 mile = 5280 feet 1 ton = 2000 pounds 1 quart = 2 pints kilo (= 1000) milli (= 1/1000) centi (= 1/100) deci (= 1/10) 25.6 mg = ? grams 25. 6 mg x 1 g / 1000 mg = 0.0256 grams 1.5 gal = ? qts 1.5 gal x 4 qts / 1 gal = 6.0 qts Write the formula for each of the following 3 chemical compounds explaining the answer with appropriate charges and/or prefixes and/or suffixes. Titanium (IV) hydroxide Titanium (IV) hydroxide - Ti+4, OH-1 = Ti(OH)4 Hydrobromic acid Hydrobromic acid - hydro = binary acid of H + Br-1 = HBr Dichlorine heptoxide Dichlorine heptoxide - ide = binary, two Cl, 7 O = Cl2O7 Show the calculation of the empirical formula for each compound whose elemental composition is shown below. 27.60% Mn, 24.17% S, 48.23% O 27.60% Mn / 54.94 = 0.5024 / 0.5024 = 1 x 2 = 2 24.17% S / 32.07 = 0.7536 / 0.5024 = 1.5 x 2 = 3