Plz help i’m in class and i’m about to cry i don’t get it.

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

Calculate the mass of carbon in 97.0 g of sucrose c12h22o11