Question

post lab quiz - determining the density of a solid and liquid
started: sep 16 at 2:49pm
quiz instructions
10 multiple choice questions (mcqs). duration 25 minutes. two attempts (highest quiz score will be graded)
question 7
how can you determine the mass of a liquid without knowing its density?
measure the liquid with calipers.
add the liquid to a known volume of another liquid and measure the change in volume.
centrifuge the liquid.
precisely fill a tared volumetric flask with liquid and record the mass.

Explanation:

Calipers are for measuring length - not mass of liquid. Adding to another liquid gives volume change not mass. Centrifuging separates components by density, not for mass - measurement. A tared volumetric flask (flask with known mass) filled with liquid and then mass - measured gives the liquid's mass as the difference between the filled and empty flask masses.

Answer:

Precisely fill a tared volumetric flask with liquid and record the mass.