A bottle of rubbing alcohol contains 75% by mass 2-propanol (C3H50) in water, What are the mole fraction of 2-propanol and water in the solutions?

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?

Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule