A700.0 ml gas sample at stp is compressed to a volume of 200.0 ml, and the temperature is increased to 30.0 degrees celsius. what is the new pressure of gas at kpa?

According to the ideal gas law, there is equation PV=nRT. So the same gas has the relationship of P1V1/T1=P2V2/T2. The unit of temperature is K. Then the answer is 385.4 kPa.

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.