Determine the maximum amount of Fe that was produced during the experiment using the attached photo. Explain how you determined this amount.

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?