Calculate either [ H 3 O + ] or [ OH − ] for each of the solutions at 25 °C . Solution A: [ OH − ] = 2.59 × 10 − 7 M Solution A: [ H 3 O + ] = M Solution B: [ H 3 O + ] = 9.57 × 10 − 9 M Solution B: [ OH − ] = M Solution C: [ H 3 O + ] = 0.000691 M Solution C: [ OH − ] = M Which of these solutions are basic at 25 °C ? Solution A: [ OH − ] = 2.59 × 10 − 7 M Solution B: [ H 3 O + ] = 9.57 × 10 − 9 M Solution C: [ H 3 O + ] = 0.000691 M

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

the right answer is c i just did the question.

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.