Asample of chromium oxide is 76.5% chromium by weight. what is the simplest formula of the oxide?

What must happen before a body cell can begin mitotic cell division

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water

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