What is the electron configuration of helium

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

How many moles of oxygen react with 12 moles of aluminum