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The Density of Ethanol Varies Slightly with Temperature, as Shown

Question 31

Multiple Choice

The density of ethanol varies slightly with temperature, as shown in the table below. The density of ethanol varies slightly with temperature, as shown in the table below. Based on this data, how many molecules of ethanol are contained in 30 mL of ethanol at 8 °C?  (Note: The molar mass of ethanol is 46.08 g/mol.) A) 8.6 × 10<sup>−25</sup> molecules B) 3.1 × 10<sup>23</sup> molecules C) 4.9 × 10<sup>23</sup> molecules D) 6.7 × 10<sup>26</sup> molecules Based on this data, how many molecules of ethanol are contained in 30 mL of ethanol at 8 °C?  (Note: The molar mass of ethanol is 46.08 g/mol.)


A) 8.6 × 10−25 molecules
B) 3.1 × 1023 molecules
C) 4.9 × 1023 molecules
D) 6.7 × 1026 molecules

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