What mass of carbon dioxide is produced from the complete combustion of 5.50×10−3g of methane?

The equation of combustion of methane is CH4 + 2O2 = CO2 + 2H2O. So the ratio of mol number of CH4 and Co2 is 1:1. The mol number of methane is 5.5*10^(-3)/16. So the mass of CO2 is equal to mol number * 44=1.5*10(-2) g.

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

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