The given question is incomplete. The complete question is:
Which molecule would diffuse faster 
, or 
,? Explain your reasoning.
Answer: will diffuse faster as it has low molecuklar weight.
Explanation:
From Graham's law of diffusion rates, the rate of diffusion of a gas is inversely proportional to the square root of its molar mass.
or 
Molecular mass of is 64 g/mol and Molecular mass of is 80 g/mol
Thus as molecular mass of is less , it will diffuse faster.
Answer:
Element
Explanation:
This is a pure substance which can't be split into simpler substances by chemical means
They are not allike as na atom has 11 elctrons and Na ion has 10 electons. <span>They both have the same nucleus (same number of protons and neutrons). The only difference is that the ion has one less electron than the atom (in this case).</span>
They are called dry cells because the electrolyte is a paste.
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