Need help with question please ..
-20 points

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?

In pqr m< p=60 m< q= 30 and m

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.