Question:
in video 5 in sum 3 the question said to write sulphate so you wrote (SO4)3 but in video 6 when its was given sulphate you wrote (SO4) only you didnt write (SO4)3 why
Answer:
Sulphate is SO4 but when considered with some other atom i.e. aluminium sulphate Al2.SO4.3 then SO4.3 is considered
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