It depends on the temperature of the water. If the fresh water is warmer, then it will melt quickest in the fresh water. If the saltwater is warmer, then it will melt quickest in the saltwater. If the water is frozen (regardless of saltwater or freshwater), the ice won't melt at all.
both
It melts faster in cold
melt
You observe the ice melt. You can measure the resulting reduction in the water temperature.
Depends on how hot or cold it is outside. Probably never melt at the south pole.
The only factors that lead ice to melt areheat transferthermal conductivityand the mixing of saltwater solution into newly-melted iceOther factors such as viscosity of liquids do not alter the speed in which a certain mass of ice melt.
saltwater.
It will melt more quickly with more salt.
Saltwater freezes at a lower temperature than fresh water. If you add enough salt to the ice and the temperature of the ice is higher than the freezing point of saltwater, the ice will undergo a phase change. The problem with using salt to clear ice is twofold: the phase change temp of saltwater isn't much lower than the phase change temp of freshwater (IOW when it gets just a little colder than freezing, salt no longer works) and it kills plants. Calcium chloride is becoming very popular because it works at extremely cold temperatures, and it won't kill plants.
yes
yes
Ice cubes don't faster in cold water because the temparature of cold water is low, ice cubes melt faster in high temparature.
its cold up there
Hot
a very cold place
It doesn't melt in this scenario.
Cold Can melt Clear Keeps beverages cold
Salt doesnt melt, it is absorbed, and as for melting on cold mornings.... name something that does melt on a cold morning.----Salt will cause water ice to soften and melt unless the temperature is very cold (much colder than you're ever likely to see this side of the arctic circle). the salt itself doesn't melt; it converts the ice around it to water and dissolves in that water, allowing it to spread out and melt more ice.