What is the density of rock if it has a mass of 25 g ?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Describing intermolecular forces use the drop down menus to match the type of intermolecular force to its name dipole dipole interactions dipole induced dipole interactions london dispersion forces hydrogen bond van der waals forces done

Why do cells appear different in distilled water than they do in 10% salt water?