Elements in a vertical column on the Periodic Table have similar properties and are all members of the same of elements.
ME
A
molecule
HD
B
phase
С
atom
D
group

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b i think it’s a water wheel turning in a stream

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

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.