It takes 3 minutes for a cubic foot of ice to melt if you have a tempertured controled room because if its to hot or to cold the ice will either take faster to melt or slower so 3 minutes is the average time for a cubic foot of ice to melt.
yes
it all depends on the temperature. ice melts faster at higher temperatures
boiling water
because it does!
That depends on the shape of the ice, how cold it starts out and the condition of the surroundings. All other variables being the same, a block of ice starting at 0 °C will take less time to melt than one that starts at -100 °. Ice in an oven at 250 °C will melt faster than one sitting on the table in a 25 °C room. If the surroundings are maintained at - 50 °C, it will NEVER melt (although it might sublime). A block of ice 1 ft x 1 ft x ft will probably melt slower than one that is 6 inches x 6 inches x 4 feet, yet they are both "a cubic foot". Ice sitting on a plank of wood and surrounded by air at 50 °C will melt slower than the same block of ice dropped into liquid water at 50 °C. A block of ice will melt slower in the shade than if it is moved into the sunlight. Ice floating quietly in water will melt slower than if the water is swirling around it. Ice will melt slower in still air melts slower than ice with a wind blowing across it. A cubic foot of ice as one contiguous block will melt slower than if you take that same block and break it up in pieces. You have to be very specific about the conditions in order to make it possible to answer the question. For example: "A block of ice 1 ft x 1 ft x 1 ft initially at a uniform 0 °C floating in an unstirred vat of pure water which is maintained at a constant 45 °C"
Ice weighs 57.4 pounds per cubic foot. 1 cubic yard then weighs 27 * 57.4 = 1,549.8 lb.
salt
Heat such as fire and boiling water
Yes, acid can melt ice faster than plain water because it reacts with the ice to form a solution that has a lower freezing point. However, using acid to melt ice is not recommended as it can be harmful to the environment and surfaces.
It depends how small it is crushed and how tightly it's packed. The smaller it's crushed and more tightly it's packed, the heavier it is as there is more ice and less space between the pieces of ice. In the most finely crushed and firmly packed volumes of the frozen stuff, the cubic foot of crushed ice will approach being a solid block. A cubic foot of water weighs about 62.4 pounds. A solid block of ice of the same volume weighs about 57.5 pounds. A cubic foot of "normal" crushed ice might weigh 35 to 45 pound range. And it could weigh more or less.
A cubic foot of water will expand by about 9% when it freezes and turns into ice. This means that it will occupy more space as ice compared to its liquid form, due to the specific arrangement of water molecules in the solid state.
Cold water will not melt the ice cube in record time, but hot water will, but salt water will also melt it fast, but if you add both together the ice cube will melt alot fast. Deceasing time alot.