Which of the following is not a characteristic of ideal fluids?

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

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?