Assuming that air contains 23 percent by weight of oxygen. Calculate the volume of air at NTP required for the complete combustion of 1kg of coal containing 90percent carbon and 5percent hydrogen (density of air=1.296gm/litre at NTP)

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Small amounts of matter are converted intolarge amounts of energy occurs in both fusion and fission reactions. they are nuclear reactions where a change in the identity or characteristics of an atomic nucleus results when it is bombarded with an energetic particle, as in fission, fusion, or radioactive decay.

13 protons and 13 electrons

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