IUT_10-11
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HSC - রসায়ন ২য় পত্রঅধ্যায়-০৩ঃ পরিমাণগত রসায়নAll Topics

 A person inhales 200mg of air once. If the air contains 20% (weight) of oxygen then how many oxygen \text { A person inhales } 200 \mathrm{mg} \text { of air once. If the air contains } 20 \% \text { (weight) of oxygen then how many oxygen }  atoms he takes in? \text { atoms he takes in? }

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