Density is mass over volume, so:
14.3/8.46≈ 1.6903 g/cm^3
You have to take the 476 L and divide it by 22.4 because with Molar Volume 1 mol = 22.4L. After you divide it your answer is 21.25.
Haha i’m trying to do the same one i’ll make sure if i find out how too to get back to you!
It has more lines in it compared to hydrogen emission spectrum. It is mainly because the helium atom has more electrons than a hydrogen atom. Therefore, more electrons get excited when we pass a white light beam through a helium sample, and it causes the emission of more spectral lines
