The beaker shows that it contains 200 ml of the material. what property of the material is being measured?

Describe the chemical reaction based on the chemical equation below. also, explain whether the equation is balanced.

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

Which fact represents evidence for the big bang theory?