Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?

Describe the interaction that occurs between two objects with the same electrical charge.

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?

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?