Consider the balanced equation below.
4NH3 + 302 → 2N2 + 6H20
What is the mole ratio of NH3 to N2?
A) 2:4
B) 4:2
C) 4:4
D) 7:2

How did planetesmals form planets? a. they broke apart into smaller chunks. b. they collided and stuck together. c. they cooled and pulled ice together. d. they began to rotate.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Which formula can be used to calculate the molar mass of hydrogen peroxide