Question d says to “Name each of the processes or reactions occurring in parts a-c above.” Do I write that it’s an endothermic process or that the process is evaporation?

What’s the percent by mass of carbon in c10h14n2

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?

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules