Make a list of 7 observations about what happens in the night vs. day.

At night animals like owls and bats will go out and hunt.

When its nighttime It will get cooler out because the sun is on the other side of the earth.

During the day most animals are awake.

Night:

1. All the stars (except the Sun) are in the sky

2. The sky is usually black

3. It's usually colder at this time

Day:

4. The sky is usually blue in the morning

5. The clouds are only visible in the day

Both:

6. It can rain at either time

7. The sun and moon are both usually glowing

Explanation:

i just got this problem. it's 90.3

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.