Answer:
Steam distillation is a separation process which consists in distilling water together with other volatile and non-volatile components.
<span>This is because Helium
has two valence electrons compared to Hydrogen which has only one. Helium has
more energy levels for an electron to jump thus more spectral lines to occur.
The spectral lines relating to each change of energy level would be more
grouped together and hence the greater chance of them falling in the visible
range.</span>
They are falling under the sole influence of gravity all objects<span> will </span>fall<span> with the </span>same<span> rate of </span><span>acceleration needless of there size</span>
Answer:
The column number tells us the amount of valence electron the element has
Time period = time/no. of waves = 6/3 = 2s
