From the stoichiometry of the reaction, the mass of K2O produced is 0.58 g/
What is a chemical reaction?
A chemical reaction is one in which two or more substances are able to combine to lead to the formation of something new.
In this case, the reaction equation is; 4K + 02 -----> 2K20.
Number of moles of K = 0.50g/39 g/mol = 0.013 moles
Number of moles of O2 = 0.10g/32 g/mol = 0.0031 moles
If 4 moles of K reacts with 2 moles of O2
0.013 moles moles of K reacts with 0.013 moles * 2 moles/ 4 moles
= 0.0065 moles
Hence, O2 is the limiting reactant
1 mole of O2 yields 2 moles of K2O
0.0031 moles of O2 yields 0.0031 moles * 2 moles/ 1 mole
= 0.0062 moles
Mass of K2O = 0.0062 moles * 94.2 g/mol
= 0.58 g
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