Classify into elements and compounds: copper, water, salt, magnesium, oxygen, carbondioxide, zinc chloride​

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

Compare and contrast refraction of light and sound will give brainliest

What’s the theoretical yield of solid lead