What is the speed of a wave with a frequency of 1,000,000 Hz and a wavelength of 299.79?

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Place the elements below in order of decreasing ionization energy. aluminum(al) chlorine(cl) magnesium (mg) sulfur(s)

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)