High School

The density of ethanol, a colorless liquid commonly known as grain alcohol, is 0.798 g/mL.

Calculate the mass of 37.4 mL of the liquid in grams. Ensure your answer has the correct number of significant digits.

Answer :

The density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 mL/g.

To calculate the mass of 37.4 mL of the liquid in grams

we will have to use the following formula:

Mass = Volume × Density or m = V × d

where,

m = mass

V = volume of the liquid in mL

d = density of the liquid in g/mL

Given the volume of the liquid is 37.4 mL and its density is 0.798 g/mL.

Mass = Volume × Density

= 37.4 mL × 0.798 g/mL

= 29.8272 g (approx)

We can round this answer to 30 g with the correct number of significant digits (two).

Hence, the mass of 37.4 mL of the liquid in grams is 30 g.

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