Salt is considered to be an ionic substance, while sugar is commonly thought of as a covalent (or molecular) substance. Keeping that in mind,
lif you were given 2 unidentified white crystals and asked to classify them as either
ionic or covalent in nature, what steps would you take and what evidence would
you look for?

can you attach a picture of the lettuce? : )

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.

answerca air mass;