What number should be placed in front of NH3 to balance this chemical
equation?
___NH3 – N2 + 3H2

A. 3

B. 1

C. 4

D. 2

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

How is the atomic number of a nucleus changed by alpha decay