10. A gas occupies a 40.0 mL at 50 K What volume does it occupy at 300K?
A 182ml
B. 240ml C 400ml
D. 424ml

They can measure  the amount of energy gained or lost

The problem here is that according to aufbau principle before 3d orbital 4s subshell comes.after filling 3p orbital with electrons you have 4 electrons left, you place two in 4s with opposite spin and the other two in 3d in any of its two orbitals of total five orbitals with the same spin.

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Just took the quiz on edgenuity and the correct answer is "c.  4.54 x  10–12  j"