(20 POINTS!! NEED QUICKLY BEFORE HOMEWORK IS DUE) The actual electron affinity of Phosphorus is lower than Sulfur, which is different than expected from the trend.

Considering what you know about electron configurations and the trend, explain why this might occur. Make sure you are explicit and specific in your answer.

What other elements might you check the electron affinity for on the periodic table to support your thinking?

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

How do you convert 4 mmol of bromobenzene to ml?