What is the chemical equation for the burning of propane if all the products and reactants are in the gas phase

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

What produces wave a)sound b) heats c)transfer of energy d)vibrations

How many molecules are in 6.0 moles of methane