does ice form in oceans at 28.58 degrees f due to salinity?
397922
Salinity is a deterrent, not a catalyst for ice crystallization. Thus, the water would have to be below 32 degrees, how far below depends on the salinity of the water. The more salt, the lower the temperature has to be. Since the salinity of ocean water varies around the world, even within short distances because of underwater currents and other factors, ice formation at 28.58 degrees is possible but far from guaranteed. I hope this helps.
273840
If the density of ice were greater than water, rivers and lakes in the north would freeze all the way to the bottom, and any land close to any large body of water that was a solid block of life would be much cooler. If one were far enough north, some lakes might never melt all the way to the bottom.
215770
depends on the ice...\n\nmany different types of ice in different states of being 'frozen' and at different temperatures and with\ndifferent degrees of purity of the water or other frozen substance...\n\nthe answer would be yes more often than no...
871252
Density of ice is less than that of water.
80785
One thing I know, salt reduces the freezing temperature of water, its why ppl use salt on snow and ice. Not because it melts it, but because it reduces the freezing temp.
1019201
First you have to know the pressure and the exact salinity to answer this question.\nBut generally :\nAt a salinity of 35PPT and a pressure of 1.5 PSI\nthe freezing point would be -1.930 degrees C or 28.5 F
1138696
The salinity of specific regions of the oceans depends on the ratio of influx of sweet water and evaporation (or in cold regions, formation of ice, which also increases the salinity of the remaining water) and on the vertical and horizontal currents. The northern Atlantic is the most saline oceanic region, if I recall correctly - probably because of much evaporation in the subtropic zone and then the gulf stream carrying the saline water north.\n\nThe dissolved salts are mainly:\n\ncations: Na+, with K+, Mg2+ and Ca2+ as important additional components\n\nanions: HCO3-, Cl- as main components, SO4(2-) a distant third.\n\nTo get the salts, simply combine to neutral compounds.
933014
All decent explanations so far; I hope I can add to what has already been posted.\n\nLiquid and Ice most definitely can exist at the same temperature and Ice can be and often does get colder than 0C.\n \nFirst of all the Triple Point of water is the pressure and temperature at which Ice, Liquid Water and Water Vapor exist at the same time in equilibrium.  Vapor is the right word, not steam although you can argue that the only time that Water Vapor and Steam are the same thing is at a very low pressure.  The Triple point of water only happens at a near perfect vacuum, 0.0063 ATM to be precise.\n\nAdding Salt to water will lower the freezing point, but then it isn't water anymore, it's salt water.  Even so, Liquid Salt Water and Ice Salt Water can also exist at the same place and time at the same temperature, slightly below 0C.  But let's stick to water.\n\nIce can easily be lower than 0 degrees.  Consider a bucket of water, liquid water sitting outside and the air temperature is -10C.  Little by Little, as the liquid reaches 0.0098 C, liquid starts to become ice.  The ice crystals form in the bucket, around the walls of the bucket and on the surface first.  The air is still -10C so the bucket, the liquid and the ice will keep getting colder.  The ice on the surface will drop to slightly below 0C but very slowly since it is still absorbing the heat of the not-yet-frozen water.  Eventually, the entire bucket of water will be frozen and will be just below 0C.  First the walls of the bucket will reach -10C (same as the air tempertaure).  The ice near the walls of the bucket and on the surface will reach -10C first, continually absorbing the heat energy from the relatively warmer ice near the center of the bucket.  Until finally, the entire bucket of ice is steady at -10C.  That is until the sun comes out or the day gets warmer.\n\n\nAnd by the Way, dry ice is not water, it's frozen CO2 (Carbon Dioxide)\n\nOne more thing, at a near perfect vacuum, you can actually cool liquid water to less than 0C without it freezing.  Never tried that but I did accidently freeze a beer last night...
26865
Average salinity of sea water is 35 parts per thousand. Yes it does differ "slighty" place to place. The salinity of the ocean on the west coast is different than that of the east. It varies due to the various factors like the amount of freash water flowing into that part of the sea, water from ice, temperature, ocean currents etc.\n\nThe salt of the sea has been due to accumulation of various salts carried into it by the rivers. The water returns to the land due to the water cycle but the salt remains in the sea and over the (thousands of) years it has become much salty.\n\nThere are also other source like degrading biological matter.
469919
Sounds like a trick question. In the north we know that putting salt on ice makes it melt. In the arctic regions only the salty sea water is still water. The ice and snow are actually fresh water. Salt lowers the temperature that water freezes at. However, if you can freeze dry the salt it will separate from the water. This is the method that's used to filter Ice Beer. So technically you could if done right but just freezing it is a difficult process because you'll need something very very cold as a coolant. This would be a good series of experiments if you can get someone that can handle dry ice (frozen C02).
496521
The concentration of salt in seawater varies with temperature.  Because the Arctic and Antarctic oceans are colder than the Indian Ocean and South China Sea, the salt is less soluble.  By the same principle, seawater near the floor of the ocean would be less salty because it's cold down there.  Throw in a few baby volcanoes, the Atlantic rift and a few dozen fumaroles, etc...  Then, you would have to know how many liters of water are in the oceans and that quantity is constantly changing.  Now, are you talking about common NaCL?  Or do you want to include all the sulfates, carbonates, phosphates, etc... which are all in the ocean?  Thanks for the easy 2 points!
741460
Two things are unusual about water.\n\n1. Frozen water (ice) is less dense than liquid water, as a few answerers have already said.  For every other liquid, the frozen form is more dense.\n\n2. As it cools, water gets steadily denser until about 4 degrees C, then it gets slightly less dense as it cools to its freezing point at zero degrees C.  Every other liquid just gets steadily denser and denser until it freezes.\n\nBoth of these unusual things are quite important for life on earth, but the second one is much more important than the first one.
786403
a) a lower freezing point than pure water
90401
The higher the salinity the more resistant something is to a cold temperature change. Meaning that it takes it longer to freeze. Frozen things are more dense, so something that takes longer to freeze is less dense.
196969
its 0 degrees c\nand 32 degree F\n\nBut this is assuming it normal tap water without to much sediment like rust.  I don't know what temp sea water freezes at.
16062
As water flows in rivers, it picks up small amounts of mineral salts from the rocks, dried up remains of ancient salt seas and lakes and soil of the river beds. This very-slightly salty water flows into the oceans and seas. The water in the oceans only leaves by evaporating (and the freezing of polar ice), but the salt remains dissolved in the ocean - it does not evaporate. So the remaining water gets saltier and saltier as time passes.\n\nAnd please SEARCH before asking questions.
1154777
When any salt particularly NaCl is added to the ice, it lowers down the temperature. The FREE ENERGY of the ice is interfered by the energy due to the ions (Na+ and Cl-) of the salt added to it. The movement of water molecule is restricted to some extent in the ice in the presence of salts. The energy saved due to restriction of movement of water molecule is being utilised by the ice to remain at still lower termperature aganist the surrounding temperature. Thus addition of salt to ice reduces the ice temperature.