Answer:
The ratio is 2:1
Explanation:
The reaction above is a combustion reaction where potassium metal reacts with oxygen to form potassium oxide.
From the equation 4 moles of potassium reacts with one mole of oxygen to form 2 moles of potassium oxide. This is achieved by balancing the equation so as to obey the law of conservation of mass which requires the number of atoms of an element to be the same in either side of a chemical reaction.
Therefore, the ratio of atoms of potassium to the atoms of oxygen will be 4:2, which when simplified gives 2:1
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