Acer TravelMate 2300 Notebook "equal ratios proportions" Questions

...atoms are contained in the cube? (0.540 g)(6.02 1023 atoms) 27.0 g 1.20 1022 atoms Because density equals mass per unit volume, the mass of the cube is m V (2.70 g/cm3)(0.200 cm3) 0.540 g write this ...