Magnesium and nitrogen gas react in a combination reaction to produce magnesium nitride 3Mg (s) +N 2(g) Mg 3 N 2(s) In a particular experiment, a 7.40L sample of N_{2} reacts completely at STP . The mass of Mg consumed in the reaction is:

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

When a scientific theory has been tested and proved by the scientific community, it becomes a law

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.