Na15(s) → Nal3(s) +
12(0)
a. 1, 1, 1
b. 2, 1, 1
c. 1, 2,1
d. 1, 1, 2

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.

Tell me the iupac name of the following compounds:

Answer asap : ( a. how does mucus prevent the entry of pathogens? b. describe two ways white blood cells protect us from pathogens.