Which formula can be used to calculate the molar mass of hydrogen peroxide (H2O2)? (5 points)
O molar mass of H + molar mass of O
O 2 x molar mass of H + molar mass of O
O molar mass of H + 2 x molar mass of O
O 2 x molar mass of H + 2 x molar mass of O

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?

Summarize possible ways in which phases of matter could combine to form a solution.

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption