How many moles of H2O is equivalent to 9.3 x 1024 particles of H2O?

Ihat will happen if i added baking soda to vinegar

Can someone me with questions 15 to 17 plz.

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?