Question

draw the heating/cooling curve for o₂. label both axes. get the melting point and boiling point from the periodic table. you can use k instead of °c. answer the following questions about the curve since we wont be able to actually draw it. the unit for the x - axis are 1, and the units for the y - axis are 2. there are 3 horizontal steps in the graph, the lower step represents the 4 and the higher step represents the 5. the melting point for oxygen is 6 k and the boiling point is 7 k. a. melting point b. boiling point c. one d. two e. three f. four g. five h. heat or energy i. degrees k j. 90.2 k. 54.8

Explanation:

Step1: Heating/Cooling Curve Axes

Heating/cooling curves have heat/energy (x - axis) and temperature (y - axis).

Step2: Horizontal Steps

There are two phase - change (horizontal) steps: melting (lower) and boiling (higher).

Step3: Oxygen's Melting and Boiling Points

From data, oxygen's melting point is \(54.8\) K and boiling point is \(90.2\) K.

Answer:

1. H. heat or energy
2. I. degrees K
3. D. two
4. A. melting point
5. B. boiling point
6. K. \(54.8\)
7. J. \(90.2\)