1.

(i) Define mole. What are the two things that a mole represents?​(ii) What weight of each element is present 1.5 moles of sodium sulphite, Na2SO3? (Atomic masses: Na = 23u; S = 32 u; O = 16 u.)

Answer» (i) Define mole. What are the two things that a mole represents?

​(ii) What weight of each element is present 1.5 moles of sodium sulphite, Na2SO3? (Atomic masses: Na = 23u; S = 32 u; O = 16 u.)


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