What coefficient is placed in front of O 2 to complete the...

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CHEM 1307 Fall 2019 Midterm Exam #1 MULTIPLE CHOICE. Select the one choice that best completes the statement or answers the question. 1) What coefficient is placed in front of O 2 to complete the balancing of the following equation? C 5 H 8 (l) + ? O 2 (g) 5CO 2 (g) + 4H 2 O (g) A) 3 B) 1 C) 7 D) 5 E) 9
2) How many moles of water, H 2 O, are present in 75.0 g H 2 O?
3) How many mm 3 are in 16.7 cm 3 ? 3 3 3 3 3
4) What is the correct answer for the calculation of a volume (in mL) with measured numbers (20.000 + 8.58) 16. × 8.02 ?
5) The element in this list with chemical properties similar to magnesium is ________. A) carbon B) chlorine C) boron D) sodium E) strontium
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6) The measurement 0.0270 m, expressed in scientific notation and with the proper number of significant figures is: m m

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