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AYORINDE

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u ar right 1b 2b
COS surface of the tension of water is lower than that of methylated spirit UNDERSTOOD.
5A-2B=14 2A+2B=14 ADD BOTH EQUATION TOGETHER 5A-2B=14+2A+2B=14/7A=28 7A=28 DIVIDE BOTH SIDE BY 7. 7A/7 28/7 A=4

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