This table shows the densities of a sample of substances. Substance
A
B
с
D
E
Density (g/cm)
0.99
0.70
1.32
0.57
1.12
Which correctly describes how these substances would be arranged in a beaker from bottom to top given their
densities?
O A, B, C, D, E
O E, D, C, B, A
O C, E, A, B, D
OD, B, A, E, C

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

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.