What will be the volume of a gas satriple at 309 K if its volume at -58 C is 3.42 L? Assume that pressure is constant.

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

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.