Which of the following are true regarding ores?

I. Ores can be metallic.
II. Ores can be nonmetallic.
III. Ores consist of minerals.
IV. Materials removed from ores are useful.
A.
I, III, and IV only
B.
II, III, and IV only
C.
I, II, and III only
D.
I, II, III, and IV

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely

A250 g sample of water with an initial temperatureof 98.8 closes 6500 joules of heat. what is the finaltemperature of the water?