according to the Aufbau principle, which principle energy level would have higher energy, n=2 or n=5?

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

How have the greenhouse gasses increased from the year 2000 to 2018

What is the molar mass of potassium nitrate, kno3