How many grams of NH​3 are produced when 890.1 grams of N​2​ gas react according to the following​ balanced chemical equation. N2 + 3H2 → 2NH3 (show all work) I NEED HELP WITH THIS ASAP

Asolid that forms and separates from a liquid mixture is called

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

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.