Please help me. I don’t know hơ to do this question

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 is the molecular weight of copper

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2