The atoms of a certsin element each contain 11ptotins and 1 valence electron.

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

What is the percentage of hydrogen in nitrogen trihydride

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *