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------------------------------------------------ Ethanol has a density of 0.789 g/mL. What volume of ethanol (rounded to one decimal place) must be poured into a graduated cylinder to equal 30.3 g?

A. 38.5 mL
B. 38.4 mL
C. 38.6 mL
D. 38.3 mL

Answer :

Final answer:

To find the volume of ethanol equal to 30.3g, we make use of the density formula which in this case becomes Volume=Mass/Density. Substituting the given values, we get Volume = 30.3g / 0.789g/mL = 38.4mL.

Explanation:

The query is based on the concept of density which is defined as mass per unit volume. To determine the volume of ethanol that equates to 30.3g, the density equation needs to be rearranged to solve for volume. So, the formula used will be Volume = Mass / Density. Therefore, substituting the given values into the equation gives Volume = 30.3g / 0.789 g/mL. Solving the above equation yields 38.4 mL. Thus, the volume of ethanol that equals 30.3g is38.4 mL.

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