Chemistry · Oct / Nov 2018 · Paper 21 · Question 5
5070
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The Periodic Table is an arrangement of elements in groups and periods.
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5(a)[2]
5(b)[1]
5(c)(i)[1]
5(c)(ii)[1]
5(d)(i)[2]
5(d)(ii)[1]
oxygen diffuses slower because it has a higher (relative) molecular mass / nitrogen diffuses quicker because it has a lower (relative) molecular mass
5(d)(iii)[2]
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