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निम्नलिखित में परमाणुओं/अणुओं की संख्या ज्ञात कीजिए - (i) 0.5 मोल He, (ii) 1.5 मोल `CO_(2)`

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(i) `3.01xx10^(23)`, (ii) `9.03xx10^(23)`

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