Seawater contains approximately 3.5% nacl by mass and has a density of 1.02g/ml. what volume of seawater conatains 1.0g of sodium

28 mL

Explanation:

We want to know what volume of seawater contains 1.0 g of sodium.

We know that the total amount of water mass always 3.5% corresponds to the mass of sodium.

So if the total mass of sodium is 1.0g this is equivalent to 3.5% of 100% of the mass

Calculate 100% of the mass with a simple rule of three

The total mass of seawater containing 1 g of sodium is 28.57 g

Now we calculate the volume that corresponds to this mass with the density

replace the values in the formula

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