Sn2NCf-Homework 1

# Sn2NCf-Homework 1 - fernandez(jf23742 Homework 1...

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fernandez (jf23742) – Homework 1 – Brodbelt – (53765) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. This homework is due September 10 at 11:00 pm. 001 10.0 points What is the symbol for the element copper? 1. Cr 2. Co 3. Cp 4. Cu 002 10.0 points A factor of 1 . 0 × 10 - 9 corresponds to the prefix 1. milli. 2. pico. 3. micro. 4. nano. 003 10.0 points Express 0.0103240 in scientific notation. 1. 1 . 03240 × 10 - 3 2. 1 . 03240 × 10 - 2 3. 1 . 0324 × 10 - 1 4. 1 . 0324 × 10 - 2 5. 1 . 0324 × 10 - 3 6. 1 . 03240 × 10 2 004 10.0 points What is the proper solution to the following equation? (150 + 2 . 5 + 36 . 75) ÷ (6 . 60 + 0 . 173) = 1. 27.942 2. 28 3. 27.9418 4. 27.94 5. 30 6. 27.94183 7. 27.9 005 10.0 points How many kg are in 10.0 mg? 1. 1 . 00 × 10 - 7 kg 2. 1 . 00 × 10 - 3 kg 3. 1 . 00 × 10 - 6 kg 4. 1 . 00 × 10 - 5 kg 5. 1 . 00 × 10 - 4 kg 006 10.0 points How many cubic inches (in 3 ) are in a 55.1 liter aquarium? 1. 162 in 3 2. 3360 in 3 3. 18,700 in 3 4. 129 in 3 5. 23.3 in 3 007 10.0 points Calculate the density of methanol (CH 3 OH) if you know that there are 4.2 moles of methanol in 5.67 L.

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