3. In all cells, genetic materials are stored in the A. Cell wall
B. Ribosomes
C. Nucleus
D. Lysosomes

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

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?