How to find density of water and its define

How to find density of water and its currently definition?

What is the way in which you can calculate the water density? The key to understanding the process is to focus on the definition of density. As simply as possible, the density is just the water mass per the volume of water. So based on it, to calculate the density of water, you should divide the value of the mass by the value of the volume. Theses calculations will allow you to get the result. You probably know it, but to make it clear – if you want to get the result in lb/ft3 you need to calculate the mass in pounds and volume in cubic feet. If you have some troubles with calculating it on your own, just use a calculator to make it quicker and easier.

Do you want to know the definition of the water density in lb//ft3? To answer this question you firstly have to know the definition of the density of water at all. So what is it? Simply put, the mass of a substance by unit volume of water. As you can see, it shows the topic in a descriptive way. The legal definition doesn’t exist. But let's get back to the density of water lb/ft3. Thanks to the general density of water definition we know that the water density lb/ft3 is the mass given in pounds per volume given in ft3.

Max density of water and its constant

The water density, as other values which are not constant, has its maximum point. The water needs to meet 2 conditions to achieve the maximum point. What are these conditions? It must be freshwater, so the salinity must be lower. It was the first condition. This freshwater has to have 4 degrees Celsius too, and that’s the
second condition. So what is the maximum water density value in conditions like these? Have a look: this value is exactly 62.4264 lb/ft3. Due to many decimal places, it may cause some problems with remembering it, so here is also a simplified result: 62.4 lb/ft3.

Water freezes at...

You probably know that, when it comes to the temperature, water has 2 specific points. The first one is the freezing point. The freezing point is when the temperature reaches 0 degrees Celsius. As you may know, the water neutral point is at 4 degrees Celsius. This showing clearly that at 0 degrees Celsius density of water will change. How much is the value of density of water in lb/ft3 at the freezing point? This value is 62.421. The basic water density at 4 degrees Celsius is equal to 62.4264 lb/ft3, so these 2 results do not differ significantly as you see.

Salinization of water and influence at density

Do you know that the density of water changes depending on its salinity? Simply put, freshwater, like water which you drink daily, will have a different density than the saltwater, like water in the sea. To make this issue clearer, the bigger density will have seawater, not freshwater. How does the value of seawater in lb/ft3 look? Let’s see: the density of seawater is equal to 63.9262 lb/ft3. Do you know that this density is about 1.5 lb/ft3 bigger than the density of freshwater which is equal to 62.4264 lb/ft3?

How does temperature and salnity affect the density of water?

The water density lb/ft3 is not constant. It means, density of water changes when even one of the conditions changes. Which are these conditions on which the density of water depends? Focus on 2 main conditions – the temperature of the water and the salinity of the water. To make it clear, if the temperature increases or decreases, the water density lb/ft3 changes the value too. When it comes to the salinity, it works the same way. Both salt and fresh water differs when it comes to the values of density. And when these 2 conditions change together, the change of water density is more significant.

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