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29. (i) Calculate the mass of oxygen in(a) 6.022 x 1023 number of O, molecules.canins(b) 6.022 x 1023 number of O-atoms.(ii) How many moles of NaCl are present in 20 g of the substance?[Atomic mass of Na = 23, Cl = 35.5 u] |
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Answer» PLZ MARK me as BRAINALIEST ans Explanation: |
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