Example: Calculate the seawater density if its salinity is 35 ppt, temperature is 5 ☌ and. Multiply the ratio by the density of pure water –1000 grams per liter – to get the density of the saltwater in grams per liter.īathers float on the Dead Sea in Israel because the salt water density is so high. This salt water density calculator determines the density of salt water with salinities between 0 and 43 ppt, temperatures between 2 and 40° and pressures between bar, the last number being the pressure at a depth of 10 km or 6.21 miles. Then subtract the weight of the empty bottle and record the weight of the saltwater.Ĭalculate the ratio of the weight of the saltwater-filled bottle with to that of the tap water-filled bottle. Less dense water floats on top of more dense layers. This value can change because of the variations in the temperature and salinity in different ocean water layers. Replace the tap water in the bottle with room temperature saltwater, and weigh it. The average density of ocean water is 1027 kg/m. Step 3: Weight the bottle with salt water The balance should have a capacity of at least 1.5 kilograms and be accurate to within 0.001 kilograms. Then subtract the weight of the empty bottle and note the weight of the tap water. Weigh an empty 1-liter bottle on an electronic balance, and then fill it with room temperature tap water. Saltwater (like the oceans) has a different density which depends on how much salt is dissolved in the water.
Calculate the density of a particular sample with the method described here. Note that these water density values are only true for pure water. The density of salt water depends on how much salt is dissolved in it. Here's a good science experiment to do in class or at home, if you have access to an electronic balance. Do a hands-on experiment and practice checking density. This is primarily due to variations in temperature and salinity, which influence the density profile in the water column. Everyone floats in the Dead Sea because the amount of salt in water effects the density.