How to Determine the Density of Salt Water.
The density of salt water depends on how much
salt is dissolved in it.
Calculate the density of a particular sample
with the method described here.
You will need Tap water A 1-liter bottle An
electronic balance A pencil and paper A calculator
and saltwater.
Step 1.
Weigh an empty 1-liter bottle on an electronic
balance, and then fill it with room temperature
tap water.
Step 2.
Weigh the filled bottle on the balance.
Then subtract the weight of the empty bottle
and note the weight of the tap water.
The balance should have a capacity of at least
1.5 kilograms and be accurate to within 0.001
kilograms.
Step 3.
Replace the tap water in the bottle with room
temperature saltwater, and weigh it.
Then subtract the weight of the empty bottle
and record the weight of the saltwater.
Step 4.
Calculate the ratio of the weight of the saltwater-filled
bottle with to that of the tap water-filled
bottle.
Step 5.
Multiply the ratio by the density of pure
water –1000 grams per liter – to get the
density of the saltwater in grams per liter.
Did you know Bathers float on the Dead Sea
in Israel because the salt water density is
so high.
