1. Mr. M's class grades were graphed as a pie graph. Based on this graph: a) The largest percentage of students received what grade?
b) Estimate what percentage of the class received a B.
c) Estimate what percentage of the class received an A.
d) Based on the graph, do you think Mr. M's class is hard?
Why or why not?

What are the 4 phases of matter in order of increasing engery content?

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?