If water froze (ice), then it would be less dense than the water itself.
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The density of water with 50 grams of salt in it will be slightly higher than the density of pure water. The exact value will depend on the amount of water used, but in general, adding salt to water increases its density due to the presence of the dissolved salt molecules.
After 50 grams of water evaporate, you will be left with 50 grams of water in which the 3.0 grams of salt is dissolved. So, your solution will now contain 3.0 grams of salt dissolved in 50 grams of water.
The volume of 50 grams of salt can vary depending on the density of the salt. The density of table salt is approximately 2.16 g/mL, so 50 grams of salt would be roughly 23.15 mL.
The mass of water can be determined by multiplying the volume of water by its density. Given that the density of water is 1.0 grams per cubic cm, and the volume of water is 50 ml, the mass of the water would be 50 grams.
18 grams of salt in 90 grams of water is more concentrated than 5 grams of salt in 10 grams of water since the first mixture has a higher ratio of salt to water.
50 grams of water equals 50 ml of water. however since grams is a measurement of mass, and mililitres is a measurement of volume. you can have something that is dense and is 50g and it can be only 25 ml, so you can't always convert them