I am so confused about this. Please some chemistry genius helps me.
Thank you in advance, you are special!
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use law of conservation mass .
In a chemical reaction mass is neither created nor destroyed.
Hence Mass of reactants=Mass of products.
Mass of Product:-
[tex]\\ \sf\longmapsto 7.5+24.4[/tex]
[tex]\\ \sf\longmapsto 31.9g[/tex]