How many moles are in 3.48 x 1024 particles of lithium ?

5.78 mol Li

Explanation:

Step 1: Define

Avagadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Step 2: Use Dimensional Analysis

= 5.78073 mol Li

Step 3: Simplify

We have 3 sig figs.

5.78073 mol Li ≈ 5.78 mol Li

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.