Someone is doing simple experiment \"Making of A Simple Hydrometer\". The experi

ID: 2254564 • Letter: S

Question

Someone is doing simple experiment "Making of A Simple Hydrometer". The experiment is done with simple tools and materials:

a. Long Straw

b. Clay/Wax

c. Sands

d. Markers

e. Water

f. Salts

g. Container

The steps of the experiment is as follows:

a. Straw is marked by markers at 2/3 of the straw or 15-20 cm from lower end of the straw

b. At the lower end of the straw, put the clay to seal the straw

c. Straw is dipped into the water filled container then add sands until the mark on straw is in parallel with water surface

d. The simple hydrometer is made

e. The simple hydrometer is used to measure density of NaCl with concentration of 0.05 gram/ml.

Question:

a. What happen to the hydrometer? How's the hydrometer position when dipped to the NaCl solution?

b. How can the phenomena happen? Give explanation

Someone is doing simple experiment "Making of A Simple Hydrometer". The experi

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